96 Aerostar 3.0 fuel injected.. The motor runs rich and then quits after 6-7 minutes. It acts as if it is flooded and will not restart if you hold the pedal down the motor tries to start but sputters and quits again. If you keep the RPMs up to around 3000 the motor will stay running and not stop but as soon as you try to put it in gear and the RPMs drop it quits. I cut off the exhaust pipe at the manifolds to rule out the catalytic converters. There was a rotten egg smell also before I cut the pipe. Fuel pressure is 40 psi key on and 32 -34 psi when running. I unplugged the MAF and it ran without stopping but it was still loading up at idle.

SOURCE: stalls when put into gear

Its possible it could be other things causing the problem, but seeing as you've checked most of the likely causes, it is most likely your Torque-Converter. The lockup clutch in your Stator-Fan located inside the Torque-Converter could be siezed, causing the car to stall.

Marvin

• 85242 Answers
• Posted on Apr 11, 2009

SOURCE: 98 F150 idle drops, almost stalls

VERY COMMON ISSUE AT THE FORD DEALER I WORK AT, HERE IS WHAT i DO TO FIX IT. THIS WORKS 90% OF THE TIME, IT IS NOT A CURE ALL FOR STALL SLOW IDLE BUT A CLOSE SECOND.
Here are some of the causes of surges, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

SOURCE: 99 explorer running rich check engine light wont come on

coolent temp sensor to pcm . the truck thinks it cold and its riching the fuel mixture . its a cheap part . i would have a good shop with a good scaner check it fist but thats up to you

SOURCE: 1997 Mustang Cobra (4V, 4.6L), rough idling, won't stay running

silly question, however did you check the air box for nests. it is not uncommon for rodents to climb in and make themselves at home. i would also say to get a maf from ford. check ALL around the engine compartment and underneath for evidence of rodents and their leavings. youll be very suprised what you may find.cheers

SOURCE: have a 89 bronco 5.8L

could be a weak ignition coil. also check for dirty throtle body(front and back of plate)