Chris,

Thanks for the quick info. Do you have any suggestions on how to
narrow this down without throwing random parts at it? I did unplug the
battery for 30 mins, reconnected and same issue. I suspect something
electrical as the vehicle literally developed this problem overnight
while parked. Thanks again for the input.

Derek

Chris H wrote:
> Could be a bad fuel injector, or much worse- a burnt valve. If it's not
> ignition-related, it's either fuel or mechanical. You'll need to narrow it
> down to one cylinder if you can. If not one offending cylinder, could be a
> bad O2 sensor. Others here will probably offer more accurate diagnoses, but
> that's where I would start.
> Good luck.
>
> Chris
> 90 & 94 GXE's