Fuel Pump Ground Wire Location

Tests/Procedures:1. Interruption of fuel supply is one of the most common no start problems in fuel injected cars. Free Same Day Store Pickup. AFAIK there is no fuse for the fuel pump in this blockthere may be a fusible link at the starter relay byt I don't know which one it is. The fuel pump is located in the tank on the driver's side frame rail. 7L Fuel pump ground wire help - I am replacing my fuel pump and I need help on finding out where my ground connects to on the frame. 15 volts is the max voltage for the Lingenfelter twin pump set up, any more and the pumps will draw too much current for the fuel pump controller. Vapor Lock. Problems with Fuel pump Chevrolet Blazer 1997 an replace the wiring harness supplied with the new fuel pump. Revised 26 –Oct -2016 to add fuel pump ground to the list. OK 6 Check for open in harness and connector between circuit opening relay and fuel pump, and fuel pump and body ground (See page IN–28). I suggest you see if the relay is working and if not, check for input from the PCM. One particularly important part of the engine fuel delivery assembly, is the fuel pump relay. So check oem lift pump fuse or follow the thin wires off the relay one will go to ground and the other to some ignition power source. Well, of course, when the battery is connected the fuel pump runs even though the ignition is off. If the connector looks ok and the gauge still doesn't work after plugging it back in, the fuel gauge sender tack-welded to the fuel pump assembly is likely bad. When we dropped the tank, we unbolted the ground strap that is on the fuel filler neck, we didn't see the other wire that came off at the same time. backing up, why are you checking all this. Where is the ground wire located at for the fuel pump. Indication there is a fusible link (F6) and fuse (F7) in the wire (221 red) to the pump. I need help wiring it up to work off one pump driving around, then have the second pump come on with boost. XVII (arrow) K-Jetronic. Start with the Simple Things Always start by checking the most simple and commonly overlooked items such as the fuses and ground. Replace wire. Panel ground wire MUST BE connected to instrument terminal that has an 8 gauge BLACK (Ground) har- ness wire connected to it. 1996 Saturn SC1 Underhood Junction Block Fuse Box Diagram. The OEM pump draws 1000 ma, so all of the bikes original power circuit wiring and the pump relay should work fine for this application. The ring Gary talks about is in the center and has the 5 bolts that you remove, then the pump assembly can be pulled out of the tank. 2 - located under right rear fender 8 ROBERT BOSCH Mixture Control Unit Fuel Accumulator and Fuel Filter- located in right rear wheel well Fuel Pump Test Point (arrow) Porsche 928 Bridging Electric Safety Circuit, relay No. The signal wire that controls the fuel gauge is purple (PCM terminal C-2 #54). This is the pump ground;. Leave the ignition primary con-nected so the main injector will pulse. Leaking Mechanical Injection Pump: The army said it often happens and they leave it like that unless it doesn't stop if the engine warms up. *** Maximum 6AN line and fitting size due to space limitations between unit and fuel tank. covered by a foam cover of sorts. the 2nd pump is the high pressure fuel pump. Relays have been tested and are fine, they also click when key is turned on. I traced it down to the fuse box in the engine compartment, there are two relays that seem to control the in tank fuel pump. 15 volts is the max voltage for the Lingenfelter twin pump set up, any more and the pumps will draw too much current for the fuel pump controller. I think I probably misled you in an earlier posting. A simple method of testing for the presence of power and ground to the pump is to remove the vehicle wiring harness from the fuel pump or module, connect a DMM to the power and ground terminals in the vehicle electrical connector, energize the electrical circuit by turning the vehicle key to "ON," or commanding the fuel pump on with a scan. Find a +12V source capable of supplying at least 15 amps, such as a terminal block on the firewall, or even directly to the battery. I check my Dashawk, fuel pressure is fine then trickles off to zero. Here are detailed instructions on determining if your fuel pump is bad and how to drop the gas/fuel tank on a Chevrolet K5 Blazer or Square Body Truck and replace it. The PCM provides what is called a low reference, probably a ground, which is a black wire(PCM terminal C-1 #23). I checked the relay like you said and it perform like it suppose to. Choose top quality brands AFE, API, Action Crash, Airtex, Autobest, Bosch, Carter, Delphi, Dorman. Wire 10 connects to the fuel level sensor on the fuel pump, which does not need to be connected unless stock gauges will be used (along with a stock fuel pump assembly). Pump only runs if there is a tach signal from the ignition. Fuel Pump Relay Ground Connection 3 Answers. The rear body ground cluster is on the top of crossbrace right behing the tank. there is also a pair of wires sticking out of the wiring harness about 6 or 8 inches from the PCM connector. That is not per factory wiring, the fuel pump shouldn't run until the key is in the start mode. CHECK HARNESS AND CONNECTOR (FUEL PUMP ECU - ECM AND BODY GROUND) (a) Disconnect the R7 fuel pump ECU connector. It is not priming, or pumping. The black fuel pump ground wire is grounded to the firewall near the back of the engine on the right side (along with other wires as I recall). Connect the digital multimeter to the positive and negative terminals of the fuel pump. Is the blue with orange strip wire a ground?? ive swapped the relays out with other ones (kept the EEC relay in since it powers the. Fuel Pump Relay Location (Driver Side Kick Panel): You’ll see another blue and black relays next to it under driver side kick panel, it’s the one that has four black wires going to it; Simple test you can do before taking out the relay, is to hold it in your hand and turn the key into ON position without starting the car – if they relay. Page 1 of 2: 1994 Fuel Pump Circuit Tests (GM 4. Occasionally it is blue with a white stripe. 107 GROUND GROUND GROUND GROUND 108 AIR REGULATOR FUEL PUMP FUEL PUMP FUEL PUMP Swap w/ #16. The PCM provides what is called a low reference, probably a ground, which is a black wire(PCM terminal C-1 #23). If your Chevrolet Silverado isn't performing the way it once did, or if you feel like you're stepping on the gas pedal and not much is happening, it may be time to replace the fuel pump. That would cause your volt gauge to read 0. I don't know what the external connection colors are. Buy a 2004 Chevrolet Silverado 1500 Fuel Pump at discount prices. Discuss Curious fuel pump relay problem (93 Camry) in the alt. If this works, and the pumps turn on, but didn't run earlier, you have a bad fuel pump relay. When we dropped the tank, we unbolted the ground strap that is on the fuel filler neck, we didn't see the other wire that came off at the same time. If the connector looks ok and the gauge still doesn't work after plugging it back in, the fuel gauge sender tack-welded to the fuel pump assembly is likely bad. The ground is located on the frame back by the rear bumper driver side. ive traced it down to the relay since im not getting any juice to the green with yellow strip wire that feeds the inertia switch. Most Hondas/Acuras use yellow and a stripe for the fuel pump wire. When I was done, without putting the bed back on, I tried to start the truck. This cause the ground to come and go or, more likely, improper (low) and inconsistent voltage to the fuel pump. But it was too late, the ECU was already gone. I cut through my truck bed right above the fuel pump so I would have easier access to it. It is a small copper colored cylinder with a red and a black wire extending from one end. Can't rule out the fuel pumps, fuel pump wires, or fuel pump circuit breaker running hot either. The Digifant engine management system is an electronic engine control unit (ECU), which monitors and controls the fuel injection and ignition systems in petrol engines, designed by Volkswagen Group, in cooperation with Robert Bosch GmbH. grounds are at the firewall. There was a bad ground connection on the fuel pump wiring harness connector. Inspect fuel pump. '99 Suburban extremely hard on fuel pumps. Check in your owner's manual for the location of the fuse box, then find the fuse that corresponds to the fuel pump. Hook your test lamp between the fuel pump relay coil terminals( they are on the opposite coroners that the power and fuel pump wire are on. Fuel Pump Circuit Breaker Reset. using ohm meter verify that there is continuity between the car’s body and wht/blk wire terminal on the pump wiring connector (vehicle harness side). I think is may be the fuel pump, fuel filter or both to some degree. Get a free battery charging and engine diagnostic testing while you are in store. FUEL PUMP INSTALLATION 1. HELP! IP: Logged Message: Interesting to know what it is. Was an intermittent problem. -How should you wire an electric fuel pump? Since you need the fuel pump back by the tank and at the same level as the fuel or lower, that usually means you're going to have a long run of wire. I checked and both ends of this wire (fuel pump relay socket pin and wire at the fuel pump) go to ground. What Causes Low Pressure in a Fuel Pump? The fuel pump takes the fuel from the tank and delivers it to the carburetor or fuel injection system at the required pressure. If you are having trouble firing up your engine or you suddenly experience strange idling while on the road, it could be that your fuel pump is on its last legs. I have the Dominator ECU and just purchased the Dominator pump (12-1800). This is the output signal from the fuel pump ECU to the fuel pump. Issues with the fuel system of a vehicle can be frustrating to no end. My question, do I still put green wire to the Holley EFI green fuel pump wire? The paper come with it shows that #85 terminal goes to ground. Measure the resistance. JD X485 fuel pump not running Service tech manual pages give schematics of electrical and test points to check. wire? Also wondering if a toggle switch connected to the jump would work well, because if the jump causes the fuel pump to. Page 1 of 4 - DIY - How to hardwire your fuel pumps and keep all controller functionality - posted in DIY Guides: ok, so this is not a kit, but an overview of how to re-wire for your pumps to get full current while still maintaining the primary pump controller functionality. Coming off of the fuel computer harness are these three wires, which connect to the fuel pump. if there is no continuity repair ground wire 6. Hook your test lamp between the fuel pump relay coil terminals( they are on the opposite coroners that the power and fuel pump wire are on. There was a bad ground connection on the fuel pump wiring harness connector. Connect a fused jumper wire between the terminals indicated by red arrows. the fuel pump does run when i hot wire it. The Caprice harness uses an underhood fuse block that is part of the engine harness. The fuel pump relay's high current circuit (wire 4) is getting power. 2 days ago · Dublin City Council’s recent passive refurbishment of the St Bricin’s Park complex in Arbour Hill offers an innovative template for modernising living space for elderly local authority tenants. You will not have constant power on this circuit. did you make sure the stop lanyard is in place,if its not you should get an audible alarm,if they actually work, and no pump voltage. If the fuel pump relay has an issue while the vehicle is operating it will cut off power to the fuel pump, which will. That way my truck don't start unless you touch a magic buton each time you turn the key on. This will pull in the fuel pump relay and you SHOULD get 12VDC at the fuel pump connector with the ingnition switch ON. Check the fuel pump fuse. 5 amp circuit breaker. '99 Suburban extremely hard on fuel pumps. Measure the resistance. Got to looking at my 12-753 fuel pump relay kit. no ground for fuel pump detectedi used a test light for thiese tests a. not getting fuel, but why, checked installation for leaks and anything else apparent, before checking filter canister, tried once more and success. Issues with the fuel system of a vehicle can be frustrating to no end. Fuel pump has been checked nothing wrong with it. I once noticed a ground wire dangling under my truck, too. Many electrical problems can be fixed at the fuse box. This wire supplies power to the vehicle's ignition system and fuel pump, it shows between 10 and 14 volts with the key in the RUN and CRANK positions of the key switch. You’ve checked the output of your electric fuel pump (just in front of the passenger side rear tire) and find that it works most of the time—or maybe it only works if you power the pump with a jumper wire! Yet, your pump just won’t put fuel to the carburetor when it’s supposed to. A stream of fuel in the valley is the result which drains through a hole and drops to the ground. The fourth is the power wire going to the fuel pump. Look below for a replacement John Deere Fuel Pump for your John Deere small engine repair. Fuel Pump Relay Terminal Wire Color Identification. Use the wiring diagrams in each section fo r connector, ground, and splice identification. Not sure which Pontiac Fuel Injection Wiring Harness to buy? We offer a wide range of Pontiac Fuel Injection Wiring Harnesss of all the best brands in the industry at an affordable rate that fits the Price Range you are looking for. Ive heard of the actual ground for the fuel pump going bad (one case) when a fuel pump controller replacement did not do the trick. If the fuel pump is malfunctioning, either by sending too much fuel or not enough, it can cause a number of performance issues with the car. In the drawing the FUEL PUMP slot is labelled That slot is to GROUND the fuel pump relay to turn it ON if Key is ON You can use a Jumper wire from that slot to a good Ground and when key is turned on fuel pump power should also come on, and stay on, assuming fuel pump relay has that 30amp fuse power to pass on to fuel pumps. Problems with Fuel pump Chevrolet Blazer 1997 an replace the wiring harness supplied with the new fuel pump. or just call your Ford dealer parts department and ask. It is part of the control system of a fuel pump and its failure can lead to start up problems. tested fuse good 2. Fuel pump installation IP: Logged Message: I have a 1997 Dakota 318ci engine. If not, then it is your main fuel pump (or pump wiring, but that is less likely, as the connections to the pump are very solid and durable) You could disconnect the pump wires (you can do this without removing it completely) and get someone to crank while you test voltage across the connectors. The fuel gauge is wired directly to the PCM. If there is anyone out there that is good at wiring positive Ground and is in my area (Ottawa Ont. Often, it's not the pump itself that fails to function, but the power that supplies it. Most of the 200 series Volvo with Bosch K-Jetronic Fuel injection have an auxiliary in-tank fuel pump and a main fuel pump controlled by a fuel pump relay. Primes the pump for three seconds at initial key-on. If you have a solid state fuel pump, and can reverse the connections, then do so. going into the connector. Where is the ground wire located at for the fuel pump. Checked for 12 volts at the fuel pump connector on the chassis by the rear rh wheel. Some cars have a fuel pump circuit breaker instead of a fuse. The fourth is the power wire going to the fuel pump. if there is no continuity repair ground wire 6. If gauge now reads Full, the wire to the sending unit is shorted to ground. These are notorious for getting corroded and falling off. 17 volts is the maximum we recommend for the stock 2010-2015 Camaro fuel pump and the factory fuel pump controller. Place coupler and clamp on fuel pump and place second clamp on fuel hose. It can be used to bypass. Imagine how terrible it would be if you were putting gas in your company truck or your personal automobile, and the gas dispensing station erupted into a ball of fire. I am finishing the wiring in our 39. needs to be cleaned. (see pictures below). Solrac's comment is got with one exception. 86 and 85 are the coil wires on the relay. This is a discussion on Fuel pump relay signal wire within the GTO forums, part of the Vehicle Specific category; Ok, im trying to the wiring on this scavenge pump. The "empty" terminal on the pigtail has an internal wire that is another ground. To do this I put the rear end up onto ramps, found the wiring harness connector to the fuel pump just near the fuel filter, uncoupled it and using my test light grounded to the skinny earth strap from tank filler neck, I had my assistant turn the ignition on. So fuel is my issue. Any excess pressure is sent back down to the fuel tank via the fuel return line. Now the relay I tied into said it was for the fuel pump or something. Checked for fuel pressure had none so i changed the pump and still nothing ,I ended up running a new ground wire to the pump and it has been fine sence. CAUTION: Make sure that the splice is crimped using special tool 418. Universal Electric Fuel Pump Installation Instructions source controlled by the ignition switch (described in step 1 of this section). Fuel pump ground 15 Answers. No continuity = faulty wire harness or harness ground Continuity = Good ground from harness to Fuel. ) Remove the fuel pump replay. The pink wire should be the fuel pump wire, the tan/white wire is for the sending unit, ground the test light to a good clean section of the frame (grind it shiney to be sur. The rear body ground cluster is on the top of crossbrace right behing the tank. Fuel pump is new, tested and is good. If I try jumping terminals 30 and 87 to bypass the fuel pump relay, the fuel pump doesn't start up, I'm assuming due to the low voltage. Connector, ground and splice indexes are provided. Ive heard of the actual ground for the fuel pump going bad (one case) when a fuel pump controller replacement did not do the trick. Fuel Pump power is supplied by Fuse 14 in the underhood fuse block. This pump can deliver fuel pressure as high as 1500 PSI. I traced it down to the fuse box in the engine compartment, there are two relays that seem to control the in tank fuel pump. TBI Wiring Harness Conversion ! First you need to go to junk yard and pull the engine EFI harness or complete system if you can. The ground ran from the pump to the body above the rear axle and was bolted in with a sheet metal bolt. Lubricate the fuel hose and pump outlet with a small amount of petroleum jelly. Here’s how to perform the test. also, the starter stays running about 10-20 seconds after the key is turned to the off- locked position. If so, I would suspect a wiring harness is shorting to ground somewhere. so i cant be sure if its the fuel pump or relay or something. - Motorcycles. One of the ring terminals has one wire and the other has two wires into one terminal. It's easy to determine when the fuel pump isn't powered up because you can hear it fail to prime. 5 volts into the system. Lastly, connect a lead from the normally closed starting system to the (S) terminal of the oil switch. Low fuel pressure can be caused by insufficient power or ground to the fuel pump or a malfunctioning fuel pressure regulator. Revised 26 -Oct -2016 to add fuel pump ground to the list. Unfortunately, Ford has occasionally specified the same color for power & ground. In fact, the fuel pump is one of the main problems we see at our service and performance shop. To sum it up: Old 200k mile fuel pump - relay gets really hot New fuel pump - relay still gets hot No noticeable performance gained. and finally when i jump the fuse block i get power to the fuel pump. The black wire connects to the stock location, the two white wires go to power and ground. fuel pump in line fuse firebird ! : / thinking about when we had installed the new fuel pump and we could not remember if there was a ground wire for the pump. Problem with ground wire from fuel pump connection to truck frame 20 Answers. Re: Ox66 Yamaha NO voltage to fuel pump a tad confused on the start prime lamp as its not a Yamaha thing. (pin 49 of the EEC Computer) On an 86 the fuel pump relay as in the diagram above are: Red: Power from the EEC Power relay, hot with the key in start or on. 5 volts into the system. I am also going to test continuity through the pump. Return gauge for warranty replacement. ditto for a fuel pump. 8167 is the realy part #. grounds are at the firewall. Trust Jacks to have the replacement John Deere fuel pump you need to get up and running again. I check my Dashawk, fuel pressure is fine then trickles off to zero. If you've discovered your fuel pump, fuses, relays, and ground and not the problem, you have a wiring problem somewhere in the circuit. A seperate wire from the ground bus or engine block should go to the battery negative. C132: Wires with an. Main Relay Kill Switch Introduction. It start working after trying turning it over so many times. its hard to diagnose something thats not in front of me. The fuel pump relay's high current circuit (wire 4) is getting power. fuel pump ground wire location olds delta 88 intermittent lose of fuel pressure , stalling, not starting, windows & - Oldsmobile 1997 88 question. 3L Powerstroke Super Duty Trucks, Excursions and Vans. I accidentally disconnected it when putting the tank back in it has a connector on the end of it but I have no idea where the. IF this were my car and I already had the tank down (or the wiring apart) to test the fuel pump directly, why not test the ground all the way back to battery negative?. If the tank is empty, it should read around 0, if it's full, about 90 ohms. Details: 1959 Cessna 182B. Nevertheless, oil continues to be transported throughout the world to fuel our global society. tested fuse good 2. (1) I unbolted the bed (8 bolts) and disconnected the wires for the lights and the ground wires for the gas filler neck. Discuss Curious fuel pump relay problem (93 Camry) in the alt. When I was done, without putting the bed back on, I tried to start the truck. ie mud and leaves and such. FUEL PUMP INSTALLATION 1. on multiple locations on the core support. Unfortunately, Ford has occasionally specified the same color for power & ground. there is also a pair of wires sticking out of the wiring harness about 6 or 8 inches from the PCM connector. Check all wire and jump the relay slots power is going to the pump, but there's no ground. not getting fuel, but why, checked installation for leaks and anything else apparent, before checking filter canister, tried once more and success. Next step is to check for power at the fuel pump connector and to test the ground. Covers 89-99 Golf and Jetta, 90-97 Passat, all Cabrios, Corrados, and EuroVans. batteries are new, filter is 5 micron, plugged in heater to see if it. One Black and one White. Remove the pump connector and test the GRY wire for 12v with the other probe on a good ground - try both frame/body ground and then the BLK wire just to make sure if you have good ground wire. (b) Disconnect the A24 ECM connector. Harness had Red and Black wires, so I think that in the link above, that Black is Pump Ground, Red is Pump Run, and Yellow is Fuel Gauge Sender. I have the Dominator ECU and just purchased the Dominator pump (12-1800). most of the gauges run on a common ground running in series inside the cluster. TBI Wiring Harness Conversion ! First you need to go to junk yard and pull the engine EFI harness or complete system if you can. 86 and 85 are the coil wires on the relay. Solrac's comment is got with one exception. 1 wire code identification 1 – color of wire (light blue with yellow tracer) 2 – gauge of wire (18 gauge) 3 – part of main circuit (varies depending on equipment) 4 – main circuit identification wire color code chart color code color standard tracer color bl blue wt bk black wt br brown wt db dark blue wt dg dark green wt gy gray. If it does, we need to check the relay enable circuit from the ECM and the ground to the fuel pump relay. The GM fuse box already has a heavy gauge relayed 12V wire coming out of it for the fuel pump. It has a crack in the port where the fuel line connects. Relay Location: 1 A97--0110 283 - Ground connection 2, in wiring harness engine pre-wiring Engine Coolant Level Warning Switch, Fuel Pump. Article 514 - Motor Fuel Dispensing Facilities. In addition to a healthy, low cost, low maintenance living space, the development also delivered a. Turning dash mounted toggle switch on energizes relay which in turn supplies electrical current from your battery through the circuit breaker to the fuel pump. SERVICE BULLETIN NUMBER SB-07-10/2017 CATEGORY: TECHNICAL ATTENTION: ALL DMC DEALERS/SERVICE MANAGERS AND DELOREAN OWNERS SUBJECT: FUEL MODULE WIRING UPDATE DeLorean Motor Company has determined that a certain number of the 107000 Fuel Modules may exhibit a behavior that would allow the fuel pump to continue running. You must use a main relay. Be careful of igniting fuel vapors when testing electrical around the open gas tank opening. It pumps fuel from the tank to the engine. Does the fuel pump run? Also: Is there bright white spark at all 4 spark plugs, even though the fuel pump does not prime? Any CEL codes?. I try it again, same deal. One Black and one White. You need to find where the 12 volts to the fuel pump stops. i cant run the fuel out becuase the fuel pump wont kick on. I didn't even think about the ground wires being a problem. Harley Davidson Touring: How to Replace Fuel Pump and Filter. Also, regarding the fuel pump running with the key turned part way. Check in your owner's manual for the location of the fuse box, then find the fuse that corresponds to the fuel pump. Pull it out and inspect it for signs of failure. found some good instruction on checking the pump instructions----- Unplug the fuel pump connector by the tank and check for power with a test light while someone turns the key to on. Step 1 - Prepare the Settings. I try it again, same deal. These other sellers have cap. Red with no stripe - Fuel pump relay monitor, connects to pin #57 on the 60-pin EEC connector, connect to positive side of fuel pump relay coil. I might try tying it to the BY wire that is the ground of the temp sensor. The wire on the right: black = ground, in terminal A on the gas tank connector. Buy a 2004 Chevrolet Silverado 1500 Fuel Pump at discount prices. Alarm horn, engine compartment wiring harness ground 1 (coil packs, after-run coolant pump (VR6 only), vehicle speed sensor (manual transmission only)), engine compartment wiring harness ground 2 (engine control module, brake system vacuum pump (automatic transmission only)), automatic transmission wiring harness (transmission control module. In this line, add an in-line fuse holder and a 7. I put another fuel pump in and nothing. Check the fuel pump fuse. Note 1- we recommend the DW300 fuel pump for all cars. I guess I replasced the pump for nothing. Only at www. Orange and bLack wire at the starter relay, this wire is a straight shot back to the fuel pump, but the wire does go through around 5-6 connectors before it gets to the fuel pump. No Gas To Engine With Working Fuel Pump the other looks to ground under the dash near the fuse box or in the fuse box. it is pulsed power that comes on when the engine starts cranking and is sent by the ecm. It is recommended to use a Holley 12-753 30 Amp Fuel Pump Relay along with a minimum size of 12 Gauge wire for your installation. Replace your regulator with the new "dummy" regulator and connect the wiring as shown. Fuel pump ground location Started the other day was going down the road and the truck shut down and wouldnt start so i left the truck sit and today didnt even mess with the truck and it started right up and it ran for 10 minutes and then i shut it off went inside and walked back out went to go start it and nothing. It points to all of that stuff between the car's power system and the pump - relays, wiring, switches and such. or just call your Ford dealer parts department and ask. I called a professional thinking that I'd screwed something up. It is located at the back of the vehicle next to the fuel tank. 1 day ago · No any work required Powerful Perfect Engine Good fuel Average Wiring complete on Meter working Oil pump working Disk break working Loud horn Sargoda no hai karachi k banday k naam hai. 8 liter turbo V6. black and white is your ground. The bed is sitting on the rear tires and a couple of 2x4's. This article applies to the Ford F-150 truck (1999-2014) and F-250 Super Duty (2005-2014). I am thinking that, because pin 30 also leads off into the warmup regulator area, I should check around there. A closed loop feedback circuit exists between the rail pressure sensor and the fuel pump regulator. I got an update. How to re-wire a fuel pump off a relay. 41 volts lower. Place rubber insulator on inlet of pump. Jumpered power to the pump and it runs. A seperate wire from the ground bus or engine block should go to the battery negative. Which terminals did you jump? If there is voltage on the red/yellow wire, and the fuse, but not at the fuel pump, the wire or a connection has broken down the line toward the fuel pump, the ground wire also must have electrical continuity to ground. the fuel pump does run when i hot wire it. Buy a 2004 Chevrolet Silverado 1500 Fuel Pump at discount prices. The PCM provides what is called a low reference, probably a ground, which is a black wire(PCM terminal C-1 #23). (Coil Power). ZeeTech on. Also be sure to check the FAULT CODE section on the Main Menu because if a code was on for the fan the circuit is disabled. The Mazda fuel pump relay & wiring can be removed. If fuel pump does not start, go to next step. Inspect the wires at the engine battery ground, thermostat ground, intake stud ground, engine to frame ground, chassis ground. But it was too late, the ECU was already gone. Place assembly upside-down on bench. Fuse Panel Layout Diagram Parts: Power window relay, Ignition, Turn, Cooling Fan Relay, ABS Relay, Radio, Body, Fuel Pump, Locks, Sun, Chime, B/U LP, EGR, EIS, PCM, Wiper, Air Bag, TRS 3/4, TRS LP. when i turn the ignition on no fuel pump heard already did these things 1. The fuel pump is located in the tank on the driver's side frame rail. CONNECTOR/GROUND/SPLICE LOCATION DESCRIPTION This section provides illustrations identifying connector, ground, and splice locations in the vehicle. No power to the fuel pump. The fuel pump must maintain 37-45 PSI for proper operation. Problem with ground wire from fuel pump connection to truck frame 20 Answers. Note the location of this square hole so you do the same in your Camaro. If the fuel quantity continues to be LESS than 1. 5 amp circuit breaker. SERVICE BULLETIN NUMBER SB-07-10/2017 CATEGORY: TECHNICAL ATTENTION: ALL DMC DEALERS/SERVICE MANAGERS AND DELOREAN OWNERS SUBJECT: FUEL MODULE WIRING UPDATE DeLorean Motor Company has determined that a certain number of the 107000 Fuel Modules may exhibit a behavior that would allow the fuel pump to continue running. Due to the problem being "off and on" I still think my best chance is the ground wire connection must be loose or not a good connection, but worst case scenario, a short in the pink power wire for the fuel pump somewhere, which means running a new wire from relasy to harness under dash then new wire from harness to fuel pump. 1 wire code identification 1 – color of wire (light blue with yellow tracer) 2 – gauge of wire (18 gauge) 3 – part of main circuit (varies depending on equipment) 4 – main circuit identification wire color code chart color code color standard tracer color bl blue wt bk black wt br brown wt db dark blue wt dg dark green wt gy gray. The pump will deliver fuel to the pressure regulator which will limit the fuel pressure to 34-46psi(V6) and 9-13psi(4cyl). Cut the blue/orange wire and the blue/red wire and connect these two together. is there any benifit to using a relay?. if there is no continuity repair ground wire 6. 0, Pump Shot Enrichment Factor for the A9L. The color codes are as follows: yellow w/ black- pump ground, gray- pump positive, small black. This wire supplies power to the vehicle's ignition system and fuel pump, it shows between 10 and 14 volts with the key in the RUN and CRANK positions of the key switch. There's a ground strap that attaches to the frame and a ground wire that goes to the filler neck. '99 Suburban extremely hard on fuel pumps. The fuel pump relay controls power to the fuel pump, So, any faults with it can cause fuel pump issues.