5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

1990 Mustang RPM's dropping almost stalling

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Old 09-29-2012, 01:56 PM
  #11  
The Beef
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Old 09-29-2012, 03:15 PM
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If you can't get it off in tact, yes replace it. That throttle body is filthy, def needs a good cleaning. Open the blade, spray carb cleaner in there and take an old tooth brush and scrub away. Then spray some more cleaner in there to wash away the residue. Upon restarting the car, it will be loaded up w/ chemical now, hold the pedal down to the floor just long enough to allow the car to start and clear out the chemical. Don't hold it WOT while it's running. Understand the procedure?
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Old 09-29-2012, 04:19 PM
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Yep, got it. I went ahead and picked up new gasket since i doubt it will come off clean. I put the picture so you could see exactly how bad it is. Here i go. Thanks again for all your help
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Old 09-29-2012, 04:23 PM
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Good luck, keep us posted.
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Old 09-29-2012, 07:04 PM
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DONE!!!!! I cleaned the throttle plate and the idle control valve. Replaced the gasket and started it up. No more idle fluctuations!!!!! I honestly think a lot of it had to do with the gasket. It was so bad I wouldn't be surprised if it wasn't a vacuum leak all on its own. Thanks again so much PRO50SC! I am even more happy than I was when I got this car a few days ago! My first car and my first ICV repair. =)
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Old 09-29-2012, 07:05 PM
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Now I just need to figure out these darn power locks, cruise control and horn. haha
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Old 09-29-2012, 07:10 PM
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Originally Posted by The Beef
DONE!!!!! I cleaned the throttle plate and the idle control valve. Replaced the gasket and started it up. No more idle fluctuations!!!!! I honestly think a lot of it had to do with the gasket. It was so bad I wouldn't be surprised if it wasn't a vacuum leak all on its own. Thanks again so much PRO50SC! I am even more happy than I was when I got this car a few days ago! My first car and my first ICV repair. =)
Congrats, glad to hear you got it squared away.
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