Having problems with your 1990 Ford F150 ?

The idle is at about 2000 rpms how could i ajust it back down

Posted / edited by AnonymousUser on : 25-05-2020

Answers :

The idler air control sets the idle automaticly from the computer. If it ran well before and not now the IAC valve needs to be replaced. Once its replaced the computer will set the learning codes to set the idle
And to add to that if you mess with the butterfly setting it will throw the whole setup out of sync. that is set to a specific value for voltage from the tps (throttle positioning sensor) and thousands of an inch opening on the throttle valve.
Repair Help & Product Troubleshooting for 1990 Ford F150

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