Grand am acting up

  • Thread starter Thread starter BigtimeOperator
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BigtimeOperator

Hey, I got a 95 grand am, that at first would die while pulling out of a drive way, then it got worse and would die when I came to a stop. I thought it was the TCC but first I cleaned the throttle body, replaced the plug wires, IAC valve and distributor coils.
And the problem went away for about 2 weeks,
But now theres a problem when it's over 80 degrees outside, I'll go out to start it in the morning and when I first take off, it will go slow for a second then shoot forward, slow for a second then shoot forward.
it does this about 5 or 6 times, then the car gets warmed up and the problem goes away for the rest of the day and it doesnt happen agian till the next moderatly hot day.
I've hooked it up to acouple of different ODBs and the ODB doesnt register the car, it says there isent a car attatched to it.
It doesnt really do anything else other then a slight engine hum (idle revs up and down) when it's in park.
And the check engine light has been going on and off since I got the car.
If anyone can give me any ideas to what the problem might be would be great! I want to try acouple of other things before I drop the tranny and change the TCC soleniod
 
Eliminate any vacuum leaks and make sure the EGR valve isn't hanging open then get back with your finds.
 
I've already taken care of all the vacume leaks and the EGR is fine!
 
Check your fuses to take care of the scanner problem. GM wires the diagnostic connector to one of the accessories such as the Cigar lighter fuse.

Find out why the check engine light is on and take it from there.
 
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