85 Problem
Thread Starter
Heel & Toe
Joined: Jun 2006
Posts: 15
Likes: 0
85 Problem
Just got my car back from my ex-girlfriend after a break-up and while she was driving it waiting to get her new car, she took it to a shop because when the car is cold, it runs like crap, but once it warms up it runs fine. Before I start in on the thing I was wondering if anyone here had anything similar happen or can tell me where to begin. The shop finally told her they couldn't fix it. And they SUPPOSEDLY are a "good" shop here in Galveston. Whatever...
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Start with checking to see if there are any codes set. If there are, follow the trouble shooting charts in your FSM to correct them. If problems persist, the FSM also has charts to help you find the causes of different symptoms.
RACE ON!!!
RACE ON!!!
Thread Starter
Heel & Toe
Joined: Jun 2006
Posts: 15
Likes: 0
OK. So I got the manual and am getting no codes, so I went through and through the manual looking for anything similar to the symptoms the car is having...Runs fine AFTER it warms up. I was thinking maybe the coolant temperature sensor, or the manifold temperature sensor. It does start running fine when the temperature gauge reaches around 170 or so. Thanx for any help.
Instructor
Joined: Jan 2002
Posts: 221
Likes: 0
From: League city Texas
re 85 problem
I had the same problem last year and tried everything. It was very frustrating. I finally found it by luck. My MAF was bad but not bad enough for the ecm to set an error code. Email me if you can't figure it out tupp@swbell.net. I live in Friendswood and might be able to help if all else fails.
Thread Starter
Heel & Toe
Joined: Jun 2006
Posts: 15
Likes: 0
It's not the coolant temperature sensor (I replaced it & no change). I did find out that my check engine light isn't even working so I started tracing down THAT problem. Bulb is fine, and the FSM says to check circuit 419 (which goes to ground to light the bulb from what I understand) and it lit up the test light according to the FSM test. That indicated open circuit 419, open circuit 39 to bulbcircuit, or a bad bulb. Is circuit 39 the foil circuit that the bulb screws into on the idiot center? Also, there was a red 10 amp fuse just behind the idiot center and it was blown so I replaced it. Still no light. Is there a fuse to the ECM somewhere?
Thread Starter
Heel & Toe
Joined: Jun 2006
Posts: 15
Likes: 0
Got the CE light working, ran the diagnostic, got code 33 and was wondering if there are any other things I have to change when I change the MAF? Thanx to everyone who helped. Basically it boiled down to pouring over the FSM until I found the problem. WHEW!
Le Mans Master
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
Originally Posted by gccsv
Got the CE light working, ran the diagnostic, got code 33 and was wondering if there are any other things I have to change when I change the MAF? Thanx to everyone who helped. Basically it boiled down to pouring over the FSM until I found the problem. WHEW!
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