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87 5.0 TPI high idle at idle/cruise

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Old May 6, 2009 | 05:36 PM
  #1  
seventy77's Avatar
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From: VT
Car: 87 GTA
Engine: 5.0
Transmission: 5spd
Axle/Gears: 3:45
87 5.0 TPI high idle at idle/cruise

The throttle sticks during cruising,and idling.(off and on) If i tap the gas pedal it comes down..Any clues?? I've changed the TB gasket,the intake runner gaskets,cleaned out the TB as best as i could,egr gasket,and checked for vaccum leaks....Still didn't help..

Thanks
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Old May 6, 2009 | 05:45 PM
  #2  
HOMEBREWED1986's Avatar
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Re: 87 5.0 TPI high idle at idle/cruise

i have the same issue
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Old May 7, 2009 | 05:25 PM
  #3  
seventy77's Avatar
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From: VT
Car: 87 GTA
Engine: 5.0
Transmission: 5spd
Axle/Gears: 3:45
Re: 87 5.0 TPI high idle at idle/cruise

Yea it sucks! Pisses me off.I also had changed the thermostat,and temp sensor.Want to try change 02 sensor,if i can get loose.If you find out anything.Let me know please.
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Old May 9, 2009 | 06:18 AM
  #4  
robertk6695's Avatar
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From: perth western australia
Car: 88 camaro convert z28
Engine: 305
Transmission: auto
Re: 87 5.0 TPI high idle at idle/cruise

I have had the same problems and i have justed changed the O2 and throttle position sensors and it has made a huge differance especially when i changed the tps.
I hope this is some help.
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Old May 9, 2009 | 09:10 AM
  #5  
seventy77's Avatar
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Joined: May 2008
Posts: 47
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From: VT
Car: 87 GTA
Engine: 5.0
Transmission: 5spd
Axle/Gears: 3:45
Re: 87 5.0 TPI high idle at idle/cruise

Cool,thanks for info..The IAC on mine was new last year..I put a TB off a 350 on last n.It seemed to be better,but only time will tell.Maybe my TPS is bad..
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