95 LeSabre engine stalls 5sec after cold start

[gerhardm]

Engine starts right up when cold but starts sputtering and stalls after running for 5-10 seconds. The problem only occurs when it's cool outside. Car starts right up again after stalling and runs fine after that. Every morning the same routine!
Had the car at a shop. Their first recommendation was a tune up. Replaced spark plug wires, air filter and cleaned the injectors. Result: The problem of course still occurs. Returned the car to the shop. They replaced the crank sensor. Result: The problem of course still occurs. After spending 500$ in vain that shop is never gonna see me again.
I replaced the spark plugs ~10k mi ago, replaced faulty powertrain control module about 5k mi ago. Fuel pump went bad about 3k mi ago and had to be replaced along with the fuel filter.
Any ideas?

[spinne1]

Some ideas: the Throttle Position Sensor (if your car has one), the fuel pump, the Idle Air Control motor, the air filter, the vacuum hoses, the Oxygen sensor, the EGR valve, the computer, the wiring....

[gerhardm]

Originally Posted by spinne1

Some ideas: the Throttle Position Sensor (if your car has one), the fuel pump, the Idle Air Control motor, the air filter, the vacuum hoses, the Oxygen sensor, the EGR valve, the computer, the wiring....

Thanks for the hints but note: The engine always runs fine after starting it a second time.

Throttle Positon Sensor: Unplugged it during idle. Engine speed starts fluctuating and check light comes right on. Plug it back in, runs smooth => gues its fine.
Fuel pump: Pump and filter are brandnew.
Idle Air Control: Need to check. But note: Works fine after second start attempt.
Air filter: Brand new.
Vaccum hoses: Need to check. Good guess. The vehicle is 10 yeras old. There is a good chance that one of them has a leak.
Oxygen sensor: Yep, another one I need to check.
EGR valve: Need to check.
Wiring: Scary thought.

Now that it's getting cold outside at least the engine check light comes on when the engine stalls after the first start attempt. This means I should be able to read the error code.

[Maverick_53]

I had a similar problem,you might want to check the fuel pressure regulator. Mine was leaking off after it sat for a while.Please post results.
Thanks Maverick

[Maverick_53]

I had a similar problem,you might want to check the fuel pressure regulator. Mine was leaking off after it sat for a while.Please post results.
Thanks Maverick