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View Full Version : Eatc cuts on by itself!



frdwrnch
01-03-2012, 03:17 PM
If a customer came in to my dealership and told me this was happenning I would have thought "No way". During my ride to work yesterday my climate control head turned itself on. I shut it off. It came on again. I turned it off. This occurred six times! None of the buttons appeared to be sticking. On the ride home, nothing. This morning was unusually cold but I waited a while to turn on the heat to see if the fault would reoccur. It didn't. I feel it is probably a solid state problem in the EATC control head. Guess I need to send one of my spares to Jim for new o-rings. Any of you guys ever experience this. I have been around these cars for years and not seen this particular issue.

SC Cheesehead
01-03-2012, 04:09 PM
If a customer came in to my dealership and told me this was happenning I would have thought "No way". During my ride to work yesterday my climate control head turned itself on. I shut it off. It came on again. I turned it off. This occurred six times! None of the buttons appeared to be sticking. On the ride home, nothing. This morning was unusually cold but I waited a while to turn on the heat to see if the fault would reoccur. It didn't. I feel it is probably a solid state problem in the EATC control head. Guess I need to send one of my spares to Jim for new o-rings. Any of you guys ever experience this. I have been around these cars for years and not seen this particular issue.

Had a somewhat similar issue with mine, Russell. Replaced the BCM and the O-rings, still had control issues. Ended up replacing the entire EATC (sans the repaired solenids) finally got it resolved.

fastblackmerc
01-03-2012, 04:44 PM
If a customer came in to my dealership and told me this was happenning I would have thought "No way". During my ride to work yesterday my climate control head turned itself on. I shut it off. It came on again. I turned it off. This occurred six times! None of the buttons appeared to be sticking. On the ride home, nothing. This morning was unusually cold but I waited a while to turn on the heat to see if the fault would reoccur. It didn't. I feel it is probably a solid state problem in the EATC control head. Guess I need to send one of my spares to Jim for new o-rings. Any of you guys ever experience this. I have been around these cars for years and not seen this particular issue.

I'd check all the connections, especially the internal connector. Also try running the self diags a few times.

DOOM
01-03-2012, 05:05 PM
Poltergeist!!! :eek:

screamn
01-03-2012, 05:11 PM
Gremlins.....

frdwrnch
01-04-2012, 09:49 AM
It did not reoccur today either. Don't think it's a connection problem as it only happened during one key cycle. Must be Gremlins!

Ozark Marauder
01-04-2012, 09:54 AM
http://t0.gstatic.com/images?q=tbn:ANd9GcTzTD8k7oCTo 8rr2SwmHbm9jm-SIG6JJ6pPQICe_mp88i9CiORj

screamn
01-04-2012, 05:19 PM
http://t0.gstatic.com/images?q=tbn:ANd9GcTzTD8k7oCTo 8rr2SwmHbm9jm-SIG6JJ6pPQICe_mp88i9CiORj

Nice representation....good pic!!!