Jump to content
  • Sign Up
  • 0

Intermittent Code 32 and hot ECM-B fuse

Robert Mitchell

Asked by Robert Mitchell,

 Share

Question

Robert Mitchell New Member

Robert Mitchell

Posted
Posted (edited)

Hello. I have a 1989 Suburban. 5.7 2WD. Automatic transmission with OD 784K miles.

Started out with throwing an intermittent code 32: EGR MAP fault. Changed all the related accessories. (EGR valve and solenoid. Map sensor, Water temp sensor, throttle position sensor) This did not fix the problem.

As time passed. Check engine light / Code 32 would intermittently show up after engine was fully warmed up. It will usually, but not always appears at idle and vanishes when RPM is increased.

Recently. Check engine light would intermittently turn on when you activate the brake petal switch. Or, light would intermittently flash when you manually shifted from drive to OD and back.

After troubleshooting with a IR camera, I discovered that the ECM-B fuse runs very hot while engine is running. Nothing else accessible appears to be unusually warm with the accessible areas of the wiring harnesses. Not sure what the ECM-B would have to do with it but.........

Any good ideas would be appreciated. Thank you.

Edited by Robert Mitchell
Link to comment
Share on other sites

0 answers to this question

Recommended Posts

There have been no answers to this question yet

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Answer this question...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
 Share
Go to question listing


×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.

  I accept