Having problems with your 1990 GMC Sierra ?

Gas is not gettting pushed through the injectors on the throttle body. Gas is getting through the throttle body, but then it wont go through the injectors. Is this a wiring problem? I cleaned out everything so it shouldnt be clogged.

Posted / edited by AnonymousUser on : 20-11-2017

Answers :

1. Verify power using noid style test light (normal test light will not work)
2. If noid light illuminates when cranking engine the problem is the injector itself.
3. If light fails to flash the problem is electrical (IE PCM).
Repair Help & Product Troubleshooting for 1990 GMC Sierra

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 || www.carrestorationshop.com || Terms of Use || Contact || Privacy Policy
Load time: 0.0059 seconds