99' Grand Prix 3.8L stalling out when it gets warm

**Michelleb76** · 06-26-2008

I have had so many things replaced on my baby....she should retail for 20k. MAP, TPS, KNOCK sensors; intake manifold gasket, plugs....ect hopefully y'all know of the GM recall#07035 which pertains to the exhaust manifold.

Basically, my car is stalling out (mostly when hot) especially when driving ob surface streets. I is getting progressivly worse and my mechanic cannot seen to diagnose the problem.

Is it the MAF sensor, Crankshaft position sensor.....what the heck is it? Would somebody please throw me a bone. I would greatly appreciate any suggestions.

**SyntheticShield** · 06-26-2008

without more information, such as what else you are seeing as symptoms and so forth. Is it hard to start again or does it start right back up? Does the tach do anything odd? Does your traction control go off?

The temperature thing (dies when its hot) would lead me to believe it is an electronic failure of some kind, i.e. sensor, but that doesnt narrow it down much either. My first thought is the Crankshaft Position Sensor, but the MAF can produce some of these symptoms as well.

**archemedes** · 06-26-2008

dies when hot makes me start at ignition module (do a swap test as a tester doesn't get it hot enough)

**shawnooohhh** · 03-20-2011

I got the same problem. If it is over 80 or so degrees outside, you cannot push too hard on the gas or the car would start feeling like it wasnt getting enough gas. If in stop and go traffic in the heat and you, lets say, turn on to a high way and get to speed up, it'll die out. In my grand prix it seems to be getting worse... much worse. I have to replace the cps. Im hoping this has to do with the cps. did you ever figure out what it was

Thread: 99' Grand Prix 3.8L stalling out when it gets warm

Thread Tools

Display

Similar Threads

my grand prix

98 Grand Prix GTP

Should i mod my Grand Prix?

Want a Grand Prix for under 5,000....

New to me Grand Prix GT 97

Bookmarks