automatic climate controls

[pj4]

have a '92' olds ninety eight, 3.8, with automatic electronic climate control. lately when starting the car the panel has three lines across it and the fans blows at high speed. during this time i can not change the settings. if i kill the power(turn key off) and restart, sometimes it will preform normaly. any ideas where to start looking for the cause?

[Shack]

I would have to guess the ATC head (unit in the dash) is the cause. Possible wiring or ground issue but I would say (with out looking at the vehicle) it is something failed in the control head its self.

[pj4]

you might be right about the ground or wiring, the problem is intermitten. any ides where the ground wire for that would be?

i did not find a fuse for the atc to follow the wire and check connections. there is a bunch of relays and fuse's under the hood just below the windsheild.

[Jeremy airjer W]

I agree, its probably the control head

[jps]

I just fixed a 96 Buick that had some ac problems. I think on a car the age of yours has a self test. The GM's are about the same for heat and ac controls if years are close. Do a google search and see if you can bring up a forum about this. I found some good info doing this. If no luck let me know, I may be able to find those sites again. The main control is one of the last things that go out on these. jps [email protected]

[pj4]

i spent some time searching for a self test or more info on testing the atc, did not find anything of help.

[Scott K]

pj4 email me and I will send you the diag procedure.

sctk11 @ yahoo .com

with no spaces!

[Shack]

Or click below

[email protected]

[pj4]

sent my e-mail to you, thanks.

[Scott K]

I hope thats what you need, if not let me know!

[pj4]

code 135 came up. E&C data line failure with heater and a/c control assembly. would that be a wire to control unit?possibly loose?