Originally Posted by PAVolvo850

My son recently began having this problem with his 90 240 wagon. When first cold starting, it cranks and runs very roughly, you can smell it dumping fuel. Then it chugs as if its hitting on maybe two cylinders. If you hit the pedal right away, it dies. However if you let it chug a bit, then try to gradually rev it up, it seems to help. It will belch a big black cloud, then run ok after that. If you fail to keep it going initially, it won't start again.

We both research extensively on the internet and found a few posts with EXACTLY the same symptoms, but No one EVER replied with the fix... EVER.

It's extremely cold here so there's not much time to be outside chasing our tails. lol

Ideas, things looked at;
It has a new cap, rotor and wires already. Also plugs.
FPR is ok, no obvious leaks thru diaphragm.
Brand new coolant temp switch was installed.
New In-tank fuel pump (AEM320) and the in-line pump deleted.
New fuel filter.
Replaced the ignition coil.
No vacuum leaks.

Thinking maybe injectors leaking?
No engine codes..

Ran diagnostic procedure.. everything ok and heard the injectors fire and the air idle solenoid working.

After the car is warmed up it will restart fine.

Any ideas are appreciated!

Cheers,
Mike