nathan Posted June 11, 2008 Report Share Posted June 11, 2008 Just replaced a fuel pump in this vehicle and that seemed to work for a day or two, but now it won't start again. The symptom that is strange is that the gas gauge goes to full when the problem occurs. Is this something in the wiring causing the problem? Quote Link to comment Share on other sites More sharing options...
LuGie Posted June 11, 2008 Report Share Posted June 11, 2008 Still running the in tank pump? what about a filter? External on the frame rail? What motor? 4.0? or 4cyl? can you check voltage to the pump?(wires are in loom on drivers side frame) I'm tempted to say bad ground, or that somehow the voltage for the pump is getting to the sender, the stock wiring probably leaves something to be desired. key on a few times to prime and check fuel pressure on the rail(schrader valve is on the drivers side rail in front of the injectors.) Quote Link to comment Share on other sites More sharing options...
nathan Posted June 11, 2008 Author Report Share Posted June 11, 2008 Yeah, I'm thinking that since the sender and the pump share the same ground that is where the problem lies. I am just not sure where along the path that the ground is being interupted. I'm going to have my friend shake the wiring while the jeep is running and see if he can get it to short. Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted June 12, 2008 Report Share Posted June 12, 2008 ground is on the engine block behind the distributor if its the 4.0 its also the ground for the pcm Quote Link to comment Share on other sites More sharing options...
Cordell Posted June 12, 2008 Report Share Posted June 12, 2008 Sure sounds like you could be losing ground at the tank, I'd think if it were that bad it would be easy to find. Good luck fixing it. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.