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02-03-2009, 02:27 PM
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#1 | |
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AF Newbie
Join Date: Feb 2009
Location: Fort Payne, Alabama
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88 S15 Idles too high when put in gear
My 88 Gmc S15 w/4.3 V6 has begun to idle too high when put in gear, I can then shift vehicle to park and idle speed will remain high. If you then turn key off and restart vehicle it will idle fine, put truck in gear idles too high, around 2000rpm. Changed the IAC valve but engine still does same. Can anyone help me with this problem?
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02-03-2009, 04:16 PM
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#2 | |
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AF - Advisor
 
Join Date: Sep 2005
Location: New London, Missouri
Posts: 16,690
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Re: 88 S15 Idles too high when put in gear
Make sure you got a good one.
Check the wiring on it and check to see if the computer is controlling IAC valve. Is the TBI butterfly good and clean? PC valve good and no vacuum leaks?
__________________
Remember proper testing gives us the answer to many problems. MT |
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02-03-2009, 05:02 PM
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#3 | |
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AF Newbie
Thread starter
Join Date: Feb 2009
Location: Fort Payne, Alabama
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Re: 88 S15 Idles too high when put in gear
Thanks for the reply, changed the TPS and it cured the problem!!
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02-03-2009, 06:01 PM
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#4 | ||
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AF - Advisor
Join Date: Sep 2005
Location: New London, Missouri
Posts: 16,690
Thanks: 5
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Re: 88 S15 Idles too high when put in gear
Quote:
Glad you got it fixed.
__________________
Remember proper testing gives us the answer to many problems. MT |
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