bad idle air control

J

ja1919

Member

Jul 26, 2004

91

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7

May 4, 2005

#1

• May 4, 2005

• #1

i have an 1992 GT auto...i guess i have read when there is a large draw on the electrical system the engine idle will bump up a little..well i had the heat on full..radio on loud..lights on..rear deforst on hazard lights on and honked horn for fun..and my volt meter droped..the engine idle did not respond..the idle was extremely low...i do not know how low due to the tach stuck at 3000 rpms...is this a bad iac??? if so what are the interchanges with other ford cars, if there are any..

 

S

SamSnyder

New Member

Mar 30, 2005

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May 5, 2005

#2

• May 5, 2005

• #2

Before I'd say "bad" IAC, I'd say "dirty IAC?" They get gunked up and need to be cleaned out regularly. Get a new gasket from Ford, then take it off and hose it out thoroughly with Gummout. Reinstall with a new gasket, and you should see a snappy idle that stays steady, and jumps quickly back to idle when you stop. Turning on accessories can add a load to the engine, as well as turning the wheel at idle. With a clean (and properly functioning) IAC, the engine should be able to maintain a pretty steady idle no matter what, plus or minus 100 RPM.

 

J

ja1919

Member

Jul 26, 2004

91

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7

May 5, 2005

#3

• May 5, 2005

• #3

i have already cleaned the iac twice with cleaner..the iac is the cleanest iam gonna get it...

 

S

SamSnyder

New Member

Mar 30, 2005

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May 5, 2005

#4

• May 5, 2005

• #4

Head for the junkyard. Those 5.0-specific IAC's were on plenty 'o cars, including Lincoln LSC's and T-Birds, as well as 5.0 Mustangs. They seem to be in plentiful supply here in L.A. There was also a straight version that had the connector facing straight out instead of right angled, but it might fit as well.

 

J

ja1919

Member

Jul 26, 2004

91

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7

May 5, 2005

#5

• May 5, 2005

• #5

what about old crown vics and LTDS and mercury marquie????

 

J

ja1919

Member

Jul 26, 2004

91

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7

May 5, 2005

#6

• May 5, 2005

• #6

anyone?????

 

S

SamSnyder

New Member

Mar 30, 2005

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May 6, 2005

#7

• May 6, 2005

• #7

I think any 5.0 will work, but I also think you're gonna see that only the fox-body ones have the right angle electical connector on them.

 

darthcual

Member

Mar 31, 2005

985

19

18

Arlington, TX

May 6, 2005

#8

• May 6, 2005

• #8

If you have the green Auto Zone (sings: get in the zone) has them for 52.99. I would have just cleaned mine but it snapped in half (damn ford and there cheap labor).