1992 Ford Escort quits responding to throttle

1992 FORD ESCORT
138,456 MILES • 4 CYL • FWD • MANUAL
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FORDTRUCKTATER
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  • 12 POSTS
cranks fine and revs fine when cold, but when it warms up motor bogs down and eventually idles no matter how much gas you give it. Fuel pressure good, compression good, timing good, spark plugs,wires and coil pack good. replaced idle air bypass, throttle position sensor, upstream oxygen sensor ECM. Got any advice? Thanks
Jul 28, 2008 at 4:56 PM
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BMRFIXIT
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Check exhaust back pressure
check for codes
map sensor
Jul 28, 2008 at 7:04 PM
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FORDTRUCKTATER
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loosened exhaust from manifold to check for a clogged cat, Cant find the MAP sensor looked on ALLDATA for a location, and it has no codes. thanks though.
Jul 29, 2008 at 5:56 PM
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BMRFIXIT
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check coolant sensor and tps volts


good luck
Jul 29, 2008 at 6:07 PM
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FORDTRUCKTATER
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thanx the check coolant light is on and I found out he didnt change the TP sensor. Im going to check the potentiometer on the sensor if its good, im going to take it to my work and work on it. I work at Clarks tire and auto
Jul 30, 2008 at 5:06 PM
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FORDTRUCKTATER
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went to take the timing cover off and the crank pulley was bent. and it sheared the keyway. So the CP sensor couldnt get a reading. And all of the spark plugs had a 70/1000 gap or higher and they were gas fouled. Problem solved. Thanks for all the help.
Aug 13, 2008 at 1:02 PM