What could be the reason my Lumina LTZ 98 heats up after a while and stop working?
When the car is cold there is no problem but as soon it gets hot, the car makes a sound like a diesel truck engine and it stop working, also the temperature indicator does not work most of the times since the problem started. The last time it heated up, the exhaust pipes just above the spark plugs where very red because of the high temp, could it be the thermosthat? or anything else? As soon as the car get cold it works fine again.