ECM. Will not clear codes.

SSR96

MEMBER
PONTIAC GRAND PRIX

Were working on a 93 grand prix. We had trouble clearing the codes so we purchanced a [u:2b7312d09d]new[/u:2b7312d09d] ecm and prom. The codes are. "Still there" What the "sonofa"
Are these codes being stored somewere else?

This cars been in the shop for a week and were stumped!

Any ideas. Anyone. Please.

Other then discounecting the ground wire or pulling the ecm fuse is there any other way.

Friday, November 24th, 2006 AT 10:16 AM

2 Replies

LSUSSEL

MECHANIC
252 POSTS

Try disconnecting the battery for 15 min. You can unplug either the red or black wire aslong as you break the curict. That should reset everything.

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Tuesday, November 28th, 2006 AT 11:49 PM

SSR96

MEMBER
2 POSTS

Update:
It seems it was the snap-on scanner that was sending us on the wild goose chase. We borrowed a tech1 from the dealer and there were NO codes.
We tried 3 Snap -on scanners and they all gave us false codes.

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Saturday, December 23rd, 2006 AT 8:20 PM