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Thread Tools | Display Modes |
04-06-2013, 11:35 PM
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#1 |
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Registered User
Join Date: Feb 2010
Location: sidney iowa
Posts: 62
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87 with tbi very high idle.
bought an 87 with tbi runs at a very high idle sometimes . when its warmed up is when i notice its when it does it and check engine light is on also.
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04-07-2013, 12:44 AM
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#2 |
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Registered User
Join Date: Dec 2006
Location: SLC, UT
Posts: 706
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Re: 87 with tbi very high idle.
First off, pull the codes and let us know what they are.
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04-07-2013, 12:48 AM
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#3 |
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TNT-MOTORSPORTS
Join Date: Mar 2008
Location: TULSA OKLAHOMA
Posts: 2,692
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Re: 87 with tbi very high idle.
check the gasket between the throttle body and the manifold , clean the Idle air control valve up. Sounds like a vaccumn leak ... usually is on a throttle body
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04-07-2013, 07:51 AM
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#4 |
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Registered User
Join Date: Feb 2010
Location: sidney iowa
Posts: 62
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Re: 87 with tbi very high idle.
thanks i will try those first . i was thinking the control valve too.
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04-07-2013, 11:46 AM
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#5 |
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buffle
Join Date: Sep 2004
Location: Independence, Mo
Posts: 426
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Re: 87 with tbi very high idle.
My 87 was as simple as a new radiator cap. The old one was bad and sensor wouldn`t let it idle down.
__________________
Life is like a roll of toilet paper. The older it is, the faster it is used up. |
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04-07-2013, 04:04 PM
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#6 |
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Senior Member
 
Join Date: May 2001
Location: Independence MO.
Posts: 7,709
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Re: 87 with tbi very high idle.
ttt for ya
__________________
72 3/4t Custom Deluxe 402/auto 66k Original paint 71 3/4t 4x4 Custom Deluxe 10k original miles Original paint 71 3/4t Cheyenne 402 70k original paint 72 3/4t 4x4 Custom deluxe 72 3/4t 4x4 Custom deluxe 91k original paint 72 Cheyenne/30 Dually 69 Camaro SS396 4-speed 13 GMC 2500HD Duramax I bought new 05 Jeep Wrangler "Willys Edition" 12k miles (I bought new) 85 3/4 ton 4x4 Scottsdale 33k miles original paint 86 1 ton 4x4 SRW Silverado 454 restored 80 1 ton 4x4 SRW Silverado 9,434 original miles!! original paint 95 GMC 1 ton dually 4x4 my dad bought new 95 GMC 3/4 ton 4x4, regular cab 454, 31k original miles 2002 2500HD 4x4 regular cab 6.0L 67k miles 2002 2500HD 4x4 regular cab 8.1L 28k miles 2003 GMC 2500HD 4x4 regular cab Diesel 93k miles 67-72 Parts for sale |
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04-08-2013, 08:50 PM
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#7 |
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Registered User
Join Date: Dec 2011
Location: Boise, Idaho
Posts: 594
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Re: 87 with tbi very high idle.
Lowburb,
Did you find your solution? did you pull the codes? Chris |
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