Try swapping out the power pcm relay. If the relay is good, replace the crankshaft position sensor.
http://www.revbase.com/BBBMotor/Wd/DownloadPdf?id=71121
SOURCE: 2001 jeep grand cherokee 4.0 engine shuts off
it is possable/likely a bad ECTS (engine coolant tep. sensor), this can cause the injectors to allow to much fuel into cylinders and cause a low compression and or flooding situation, good luck, marty
SOURCE: truck cuts off while driving down the road.
Replace the TFI module. Ford back in 1986 thur 1993 had problems like the one you wrote about. TFI module gets hot and shuts car or truck off then when it cools sometmies starts and sometimes not.
SOURCE: 1992 ford mustang lx 2.3L will not start
The crankshaft sensor went bad. I Was'nt getting any fire from the coil pack. Tried switching coils and still nothing, tried switching ignition modual, nothing. I checked to make sure it was in time and it was. Nothing left to check so I changed the crank sensor and it firerd right up! Thanks.
SOURCE: 2001 Ford Ranger cranks but doesn't start periodically
If it has a distributor it is possible that the reluctor / stator has a broken wire. preventing the computer from firing the engine. This can be intermitant and would require the removal of the distributor. If the engine has a crank shaft sensor then this may be a possible place for a broken wire or bad connection. Location for these can be on the harmonic damper at the from=nt of the engine or located at or near the flywheel......
SOURCE: 1989 mustang gt 5.0 fuel
Was looking at posts and other sites. I take it that some relays are even under seats. Anyway, Apparently the ECU relay and the ECC relay are linked. When properly operating the ECC brain sends a signal to the ECC relay and the ground wire is tan/green. The brain can be throwing the signal and the relay terminals are not receiving the signals, so the relays cannot switch.
Although you have replaced some relays, you need to check your plugins for these 2 relays.
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