idling problems

1994 FORD RANGER
150,000 MILES • 6 CYL • 2WD • MANUAL
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BRIAN 25
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have a 94 ranger 4.0. im having idling problems if im driving and come to a stop the rpm's stay up at 1700 for a few secconds then come down. i changed the iacv and the tps. i also noticed if the truck is running and disconnect the mass air or the iacv my truck dosnt stall or have a drop in rpm's. do i have a bad computer?



Jan 24, 2011 at 6:09 PM
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RASMATAZ
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Clean the MAF sensor with an electronic cleaner CRC and test it
Jan 24, 2011 at 6:15 PM
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BRIAN 25
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cleaned the MAF didnt look dirty sprayed it down anyway let it dry and put it back. drove the truck and its still doing it. i also checked all my vaccum lines and there connected. any other advice??
Jan 24, 2011 at 7:03 PM
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RASMATAZ
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Inspect the air tube all the way to the throttle body for leaks and also try cleaning out the EGR valve and see what happens
Jan 24, 2011 at 7:40 PM
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BRIAN 25
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intake tube looks good. the egr didnt have any soot build up on it. i do have a throttle body spacer could the gasket have gone bad?? or replace the egr?
Jan 24, 2011 at 8:01 PM
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RASMATAZ
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Try cleaning out the throttle body and check the gasket on it-
Jan 30, 2011 at 9:59 AM