1995 2l Jetta (Motronic).

Cold running is rough, I have lots of hesitation. Once warm, it still
feels like the engine is underpowered. If you deck it, it pulls hard
and around 3500 it feels like it dies off for a second then continues.

So, I tried to get ECU blink codes, but the process doesn't seem to
work for my car, the check engine light is on....

So, what should try and replace. I've done the usual, plug, wires,
vaccum lines, cap, rotor. So should I try for the O2 sensor? Maybe
the coolant temp sensor? Any other suggestions?

Thanks,
Adam

Well you can keep GUE$$ING or have the DTCs read and narrow down the cause of
your check engine light.
Autozone and others might do it free.
Or buy a scan tool like the one on ross-tech.com and not only read them but do
other things too.

later,
dave
Reminder........
Before you criticize someone, you should walk a mile in their shoes. That way,
when you criticize them, you are a mile away from them, and you have their
shoes. Frieda Norris