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I have a 88 Mustang gt 5

Tiny
JJ58551
  • MEMBER
  • 1988 FORD MUSTANG
  • 151,000 MILES
I have a 88 mustang gt 5.0 automatic. It has been wanting to die when you let off the gas. Kinda has a up an down idle when you come to a stop anf then dies. The car does not have an oxygen sensor. The guy how had it before me just took it off and plugged the hole with a bolt. I was told that this could be my issue. And it is a speed density motor. Could this be the problem?
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Monday, April 8th, 2013 AT 8:52 PM

5 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check and test the idle speed control motor on the throttle body unit-
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Monday, April 8th, 2013 AT 9:10 PM
Tiny
JJ58551
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  • 33 POSTS
Would that be the idle air control valve? If so its new! If not, where would it be?
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Monday, April 8th, 2013 AT 9:14 PM
Tiny
RASMATAZ
  • MECHANIC
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Same thing controls the idle speed-clean the EGR and PCV valve and see what happens-
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Monday, April 8th, 2013 AT 9:59 PM
Tiny
JJ58551
  • MEMBER
  • 33 POSTS
Sorry to ask so many quetions! Is the egr the thing that is right onthe other side of the idle air control?
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Monday, April 8th, 2013 AT 10:16 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
It will be just behind and above the drive belts at the front of the engine. There will be several vacuum hoses attached to the valve and the valve itself has a silver in color disc like "hat" on it and a "L" shaped body.
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Monday, April 8th, 2013 AT 10:33 PM

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