Having problems with your Jeep Wrangler ?

I have a 1990 jeep wrangler yj 2.5 L.The jeep everyonce in awhile wont start I cant hear any relays or a fuel pump working but once it starts up it runs fine,and also I notice that when I turn off the jeep and remove the key it stays running

Posted / edited by AnonymousUser on : 15-07-2019

Answers :

If you feel confident enough remove ecu from behind glovebox to nuts near top off battery on firewall open it up there are 4 torx that hold the board in remove theboard and hold up to light you will see the circuit on no 3 pin is getting hot solder a new jumper in its place and replace diode . i have my yj yrs im on my 3rd ecu allways the same issue i couldnt afford a new one so opened it up and saw the issue i traced it back to where the harness pierces the firewall two wires had chaffed and were occasionally shorting out reaired wires replaced diode been running great for 12 months hope this helps
The ignition has an electronic control unit, (ECU) that has a relay in it that is probably malfunctioning. You can have it tested at a place like Autozone, but if it is intermittant, they may miss the problem. But I would assume it is probably going to get worse.
Repair Help & Product Troubleshooting for Jeep Wrangler

Tips for a great answer:

- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.

Suggested Questions/Answers :

Loading ...

  • Start your question with What, Why, How, When, etc. and end with a "?"
  • Be clear and specific
  • Use proper spelling and grammar
all rights reserved to the respective owners || carrestorationshop.com || Terms of Use || Contact || Privacy Policy
Load time: 0.0091 seconds