94 TC won't start after warmed up

[galvanhouse]

94 TC hasn't given me any problems, it started and ran great until a week ago. Starts right up when cold, but after driving 20-30 minutes and its warmed up and I park and it's turned off for 5 or 10 minutes it won't start. It will crank, occasionally start, run really rough, maybe 5 seconds (it sounds like it's starved for gas or has a vacuum leak), but will not start. Then after sitting 20 to 30 minutes it starts right up and runs fine. I checked the vacuum lines, fuses, reset the fuel pump relay, cleaned the throttle body and checked connections. Anybody have a problem like this or have any ideas?

 

[slowmkviii]

A couple ideas
Crank shaft position sensor failing
Fuel pump failing

 

[86markviilsc]

When I was in auto repair school, we had a mid 90's Jeep Cherokee come in with the exact same symptoms, ran fine cold, stumbled and fell on its face hot. Turns out it was a failing fuel pump. New fuel pump, ran fine hot and cold. Not saying it's your solution, just a suggestion.

 

[Markviiiedrea]

Hook up a fuel pressure gauge and record the readings on cold start up and after a half hour.