Ill start from the beginning. While driving my 91 Camaro (v6) down the road, I needed to pass someone going 50mph; I passed them at 70mph and the car cut out on me. I just popped it into neutral and cranked it again until I got home. When the car is cold it will crank and idle fine; however if I rev the engine somewhere past 4500rpm it will cut out. If I try to run the car cold it will make it a short distance and same stalling problem happens.When the car is hot the idle is rough @ 500+or-rpm. Pressing the gas at all makes the car stall.
Before this problem came up the car was in the shop and had the fuel injectors cleaned, one injector replaced, new fuel filter, and the fuel tank cleaned.
I have looked at a few things that could have caused this to happen but found very little. This is what we've done.
-check engine light read code 33 (map sensor) so we replaced that
-right after replacing map sensor we noticed that a puff of smoke came from the EGR valve. There was a leak. (turns out that one of the screws between the spring loaded rods and the metal adapter broke flush with the adapter and it ruined the valve between the two. Also turns out that no one, not even GM themselves, make that one little valve by itself. Had to get a new EGR if I wanted the valve) EGR valve replaced.
-after replacing the EGR valve we saw little improvement. We put some Sea foam into it, using deep creep as well on the intake manifold.
-We disassembled the exhaust pipes to check out the catalytic converter, which was fine.
-things that we've checked and know that they aren't bad. TPS sensor, pickup coil, ignition module, an the ignition coil.
Are there any ideas from anyone?