Third Generation F-Body Message Boards

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- DFI and ECM (https://www.thirdgen.org/forums/dfi-ecm/)

- - What gives? (https://www.thirdgen.org/forums/dfi-ecm/749593-what-gives.html)

James Sutton

12-06-2017 04:22 PM

What gives?

I recently changed my ECM. Before I did, my instrument cluster worked fine; after I did, engine ran hot, and tachometer & temp gauge read high. Any ideas?

Drew	12-06-2017 06:13 PM

Re: What gives?

Considering the ECM doesn't control the gauges, it's either not related or not an instrumentation issue.

RBob	12-06-2017 07:56 PM

Re: What gives?

Does the fan(s) run OK? The '91 V6 ECM and the '91 TPI ECM both control the engine cooling fan.

RBob.

James Sutton

12-07-2017 12:48 AM

Re: What gives?

Opened hood with engine hot; fan not working or working intermittently. What's the fix?

RBob	12-07-2017 06:43 AM

Re: What gives?

Another ECM.

RBob.

MrPackstin

12-07-2017 09:35 PM

Re: What gives?

Wonder if the terminals on the new cluster are all clean, especially the grounds.

James Sutton

12-08-2017 12:13 AM

Re: What gives?

Quote:

Originally Posted by MrPackstin (Post 6187850)

Wonder if the terminals on the new cluster are all clean, especially the grounds.

Cluster was working fine, before ECM was changed.

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