Dgduramax Posted May 10, 2017 Share Posted May 10, 2017 Hoping you all can help me out here. A few months ago my fuel pump went out on me. Put a new one in it and it seemed to run great, noticed it had a fuel leak around where the assembly goes into the tank so I put a new seal in it. Ever since I've had an issue of the jeep randomly shutting off. No stumbling or cutting out, will just be driving down the road and it's like you cut the key off. Sometimes it will go for miles without cutting out, sometimes you make it a few feet. It always starts right back up though, and doesn't seem to have an extended crank time or anything. Just put a new CPS as I know it is a common problem and it didn't help it. Thanks in advance! Link to comment Share on other sites More sharing options...
DirtyComanche Posted May 10, 2017 Share Posted May 10, 2017 Probably a loose connection on the fuel pump. Or a pin has pushed out of the connector on the harness there. Or a loose ground. Start with the area you were mucking with when you first had the problem show up, which you've lead me to believe is the fuel pump/sender. Link to comment Share on other sites More sharing options...
Dgduramax Posted May 10, 2017 Author Share Posted May 10, 2017 Okay cool yeah I'll try to get it back on the lift tonight and check the harness and pull the assembly and check all wires and connections and I'll see what I find. Thanks! Link to comment Share on other sites More sharing options...
Truckcom Posted May 10, 2017 Share Posted May 10, 2017 My 88 does the same thing and it's the ignition switch. Try wiggling the key next time and see if it will keep running. I might ask if anyone knows if the switch can be accessed enough to allow a spray of WD 40 to hit it without dismantling? Link to comment Share on other sites More sharing options...
phatton Posted May 10, 2017 Share Posted May 10, 2017 Check the ballast resistor located on the inner fender drivers side. You can bypass it to see if that solves your problem. Link to comment Share on other sites More sharing options...
cruiser54 Posted May 10, 2017 Share Posted May 10, 2017 Could be a ton of things. As stated, check where you worked on it last. Here's something to consider doing while you're down there under the MJ: http://cruiser54.com/?p=249 Link to comment Share on other sites More sharing options...
Dgduramax Posted May 10, 2017 Author Share Posted May 10, 2017 Thank you all for the replies, I will try and check all options this evening. The reason I didn't think it was fuel related is because it shuts off so immediately with no stutter and starts right back up. I figured if it was running out of fuel it would take a second to build pressure back up before starting. Link to comment Share on other sites More sharing options...
Dgduramax Posted May 16, 2017 Author Share Posted May 16, 2017 Found the problem, ended up being a bare connector in the fuel tank hitting the side of it and grounding the pump out. Thanks again everyone! Link to comment Share on other sites More sharing options...
cruiser54 Posted May 16, 2017 Share Posted May 16, 2017 Found the problem, ended up being a bare connector in the fuel tank hitting the side of it and grounding the pump out. Thanks again everyone! Thanks for reporting back, and great news that you figured it out!!! Link to comment Share on other sites More sharing options...
DesertRat1991 Posted May 19, 2017 Share Posted May 19, 2017 Found the problem, ended up being a bare connector in the fuel tank hitting the side of it and grounding the pump out. Thanks again everyone! That sounds... dangerous. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now