idles too high

1993 CHEVROLET ASTRO
360,000 MILES • 3.4L • 6 CYL • RWD • AUTOMATIC
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CHRISTOPHER COMBS
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  • 2 POSTS
Engine idle too fast in park. I changed the throttle body and it still idles too high.
Sep 1, 2016 at 7:12 AM
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HMAC300
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 48,601 POSTS
check for a vacuum leak and make sure TBI is tight to manifold. check hoses for being soft if they are replace them.
Sep 1, 2016 at 9:34 AM
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CHRISTOPHER COMBS
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Hose tight, still racing. maybe it is the computer code not right. do you know how to check engine light on?
Sep 2, 2016 at 6:35 AM
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HMAC300
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 48,601 POSTS
cross A and B on a ldl it is down on left hand side of steering column then turn key on and count flashes of engine light. they go in series of three so three times one flash is one the three of two so that would be twelve which is normal, then go from there get back to me with codes they will stop at about fifty five if I remember.
Sep 2, 2016 at 7:48 AM