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Idles too high

Tiny
CHRISTOPHER COMBS
  • MEMBER
  • 1993 CHEVROLET ASTRO
  • 3.4L
  • 6 CYL
  • RWD
  • AUTOMATIC
  • 360,000 MILES
Engine idle too fast in park. I changed the throttle body and it still idles too high.
Thursday, September 1st, 2016 AT 7:12 AM

3 Replies

Tiny
HMAC300
  • MECHANIC
  • 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.
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Thursday, September 1st, 2016 AT 9:34 AM
Tiny
CHRISTOPHER COMBS
  • MEMBER
  • 2 POSTS
Hose tight, still racing. Maybe it is the computer code not right. Do you know how to check engine light on?
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Friday, September 2nd, 2016 AT 6:35 AM
Tiny
HMAC300
  • MECHANIC
  • 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.
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Friday, September 2nd, 2016 AT 7:48 AM

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