93 gt rough idle - Ford Mustang Forum

 
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post #1 of 6 (permalink) Old 06-19-2012 Thread Starter
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93 gt rough idle

got a 93 gt with rough idle. and it fall on its face in gear but not neutral .have changed plugs wires ,msd cap and rotor, and fuel filter. any ideas would be great cause this is gettin agravating. THNX

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post #2 of 6 (permalink) Old 06-19-2012
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Check all hoses for a vacuum leak.


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post #3 of 6 (permalink) Old 06-19-2012 Thread Starter
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Repaired all va leaks but I'll check again. Any other suggestions would be great.
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post #4 of 6 (permalink) Old 06-19-2012
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Idle air control valve maybe? Did you start changing parts because you were doing a tune up, or did it just start running bad one day?

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post #5 of 6 (permalink) Old 06-19-2012 Thread Starter
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Both, took top half of engine down and replaced gaskets, then it idled rough , also needed tune up. And it makes a pop noise when u start it up like timing is off , but it's not.
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post #6 of 6 (permalink) Old 06-19-2012
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Did you change the IAC? It might need to be changed out. I don't know that it will fix your problem, but it could. It sounds like everything else was changed. You might want to make sure it is timed correctly. Something is off for sure if its popping.

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