Car:
- 1997 N/T Man Trans

Problem:
- Car starts and runs fine when cold...after idling for several minutes the car warms up and starts running like crap (feels like the timing is way off) until it dies and won't restart. After the car cools down I can do it all over again.

Things I've already checked:
- ECM Replaced (I have a spare from same year/ make/ model) No change.
- Coolant Temp Sensor replaced. No change
- IAT Sensor bypassed. No change
- Originally I thought it was a fuel problem. However the car has a new pump, and pump relay and the filter is clean.

It seems like a temp sensitive timing problem. Any thoughts?

Thanks