TurboMike

Been working on a 99 SE with the 3400 with 98,000 miles.

Cold start is fine, but when you drive it some...stop...wait a couple minutes like going into a store or something and come out... start-stall...start-stall. Then finally it will start.

Here is what I've done so far:

First, the car came to me with ALOT of problems. It amazes me how people don't take car of thier cars.

1. I replaced the leaking intake gasket.
2. I replaced the leaking water pump.

He brought the car back with the start/stall problem.

3. His fuel gauge was reading all crazy so we replaced the fuel pump unit with a good used one (wrecked GA with 4k miles) Plus I wanted another pump to make sure that wasn't the problem.

4. I cleaned the throttle body and IAC motor. I also hooked up a scanner to make sure there weren't any codes and to "work" the IAC motor. I would raise and lower idle no problem.

5. Check fuel pressure. Holds good, don't leak off.

6. Replaced original plugs.

7. Looked for vacuum leaks, AFM hoses tight, etc. Nothing found.

Everything seems to be good, but the hot start-stall continues... I'm at my wits end. Any ideas?

The Right Formula

Torque converter? My '90 did that. After even a short highway run, it would stall out when i tried to re-start.

--Jason

__________________
2002 Light Pewter Metallic Formula A4:
Cold Air Intake with sealed MTI Airlid, ported and polished TB,
smooth bellows, Bridgestone Potenza Pole Positions
"Bullsh^t stops when the green light pops" license plate frame

1997 Light Taupe Metallic Grand Am SE V6:
cone air filter (+30 HP, OMG! ), otherwise bone stock

Bill Scheller Insurance Company = OWNED by LS2.com

TurboMike

no, your thinking about when you drop it in gear. This is in park

The Right Formula

Happened in park too after driving for a while. The TC would just get too hot and not engage/disengage. Would need to sit off for a bit until it cooled down a bit.

Truly puzzling indeed...

--Jason

__________________
2002 Light Pewter Metallic Formula A4:
Cold Air Intake with sealed MTI Airlid, ported and polished TB,
smooth bellows, Bridgestone Potenza Pole Positions
"Bullsh^t stops when the green light pops" license plate frame

1997 Light Taupe Metallic Grand Am SE V6:
cone air filter (+30 HP, OMG! ), otherwise bone stock

Bill Scheller Insurance Company = OWNED by LS2.com

wxgal

I have been having the same problems with my car (97 GA with about 93,000 miles ... 2.4 L, 4 cylinder, throttle-body injection). If you get this problem resolved, please share so I can see if that's my problem too.

gm-andy

I would definetly look at the ignition module. There are known to get hot and cause a stalling condition like you described. That is why gm uses dielectric grease on them to dissapte heat and moisture. Look at the spark when it won't start. If there is no spark, you are looking at a ignition module, or possibly a crankshaft sensor.

Let me know how you make out.