I had the same problem. The cooling fan wasn't running, so the engine over-heated. The lever (bi-level, a/c, defrost, etc) needs to be on so the fan will engage. The fan is tied into that system. one of a few things it could be.. "sensors" if you pick up a book at a part store it will have values of all the different sensors in it .. by hooking up a simple ohm's meter u can check the values if there off more than .01 -.05 it's going to be a bad sensor u can use this on pretty much all gm and Ford sensors if i had to guess i would say start with a coolant temp sensor it's the sensor just below the water inlet housing ....
To answer your question I need to know the year model of your Chevy Celebrity as well as the engine that it has in it.1996 chevy calavlier 2.2
No Chevy Celebrity ever had a 4.0L engine
I had a similar experience with my 1987 Chevy Celebrity. In my car's case I replaced the ignition module and the crankshaft position sensor. Between the two the problem seems to be fixed.
Check
No.
Does your 1986 Chevy Celebrity have the 2.5L 4 cylinder engine or the 2.8L V6?
The idle speed on a 1987 Chevy Celebrity is controlled by the engine computer, there is no way provided to adjust it.
The timing on y our 1987 Chevy Celebrity is controlled by the engine computer, there is no way provided to adjust it.
That sounds like a problem within the engine control module or possibly the wiring,
Which engine does your 1982 Chevy Celebrity have? Is it the 2.5L 4 cylinder or the 2.8L V6? They are very different.
Depends on what engine it has
On a 1989 Chevy Celebrity the timing is controlled by the engine control module, there is no specification or provision for adjusting the timing manually.