Also, check for continuity between the fuse holder and the fuel pump connector. Re: where is the fuel pump relay ground wire? If you connect the red/yellow striped wire to that oil pressure switch, the fuel pump will run only when the engine is running. I could be wrong, but thats what i did. That's the switch you want to connect the red/yellow striped wire to. Be sure that whatever modifications you make, you keep this safety feature. If you follow the lines coming out out of the tank, you will see the wiring by them (probably clipped to the lip of the tank).
Pump would run for about 1 second before it would stop. Edit: sorry - I see in your original post that you applied 12V to pin "g" of the ALDL connector -. Other wise, the pump will not function at all. Fuel pumps aren't really designed for direct wiring. 14. sounds screwed for the help...
Don't want to drive it til I know what the problem is and it is fixed. Test drove may times to make sure of repair. You're not getting 12V on the 12V side of the FP fuse holder -??? 8 so the switch will be open. The external electrical connector for the fuel pump has a bad connection on the ground wire... Ok I didnt get any new electrical connectors, whats up with rewiring everything? Kind of a poor setup for this I think, but anyway: # 24. Still was happening randomly. Also the 30A fuse is far to big for the fuel pump and the stock power lead, if something goes wrong you will have a fire, the stock power lead will burn almost instantly. I need to know which wire out of the four that plug into the fuel pump is the ground wire for the fuel pump not the sending unit. This is assuming that you have a fuel pump that can be direct-wired to the battery. Do not have efi, ride gravity, never fails. Conclusion: Bad ground (I think).
As we mentioned before, if your fuel pump works with something other than the voltage of your vehicle's battery, then you may find yourself running into a couple of problems, but nothing too crazy. Any info on that would be great. I went from the battery to #30 on the relay. Of the handful of times I've had my fuel pumps out to replace the filters, I've never seen anything close to that. Anybody know where the ground could be if not by the E-brake. I want to put a switch in the ground source to the relay on my fuse box, so if the swith or connection would ever fail it would kill the pump, avoiding any saftey risk. Before you register please ensure you are familiar with our terms of use and related policies.
3 wires out of top of one of them ground which I can check? The blue signal wire and yellow power-out wire are short, so you'll want to place the relay close to the fuel pump connector. I tried switching the fuel pump relay as well. Audio/Video Electronics. If the pump has the same connector, replacement is really only necessary if there is a problem with the original. You might want to check it out through its entire range with a ohm meter. Truck is towed back and we began to check and double check. If you are not comfortable, take it one wire at a time. Well i found a 2015 and the wiring is diff, looks like the resistor array is external but it does tie back to the pump so i wonder if it shares the pump ground, if so still could be the issue. With a few sprays of carb cleaner we could get the engine to run for a few seconds. Pumps wired parrell, Relay between the power side of the pump. If it lights for a couple of seconds, then it's getting the signal from the ecm.
I'm pretty novice here but can do some basics. 94. so fcm, instead, should i use the harness side original 12v to power relay, and completely replace the fuel pump side to 10 gauge? The fuel pump wouldn't prime or run like that... when i turn the key over, i have power for 2 seconds at #87 (to fuel pump). I have a 94 XJS and it conked out back in May. I think that's the one on the filter flange. Forum Statistics241. I would verify juice is going back to the pump first. I tried to put 12v at the fuse pump clips but no luck. You will need a soldering iron capable of dealing with automotive soldering jobs. Computer no throwing any codes BTW). If the pump is at the tank, I would personally ground it near the tank. This is after it was totalled. Got 12V on yellow wire at fuel pump relay and 12V on brown wire with switch on but it's not making it back to the pumps for some artled me when pumps came on by simply putting probe into brown 't make sense since I didn't actually complete the circuit for the pumps, just the probe. Gray = + for fuel pump.
To make running the wire into the trunk easier you can remove the red wire from the relay plug by depressing the pin lock in the connector with a small flat blade screw driver. Finally, at least on the hardware front, you will need some automotive wire. 5V or greater drop between the two. Please ensure you read any forum rules as you navigate around the board. I'm extremely unhappy with my car at this point. Your first job is to get the first wire connected up to the positive terminal on the battery. In the trunk, under the floor behind the rear seats, you will find the blow pictured collection of plugs/connectors.