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Old 08-19-2012, 12:38 AM   #1
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96 mustang gt rough idle

After filling up at a gas station and being in the highway for a little while I noticed my mustang started idling rough and it was running around 600-700 rpms.. My brother filled up at the same gas station and his car died after sitting at a stop light and then was idling bad but is now running fine.. I thought it was bad gas but I ran all that gas out and also put HEAT in to get water out if there was any in there. It will idle fine bouncing between 1300-1000 rpm and then will bog down. Any ideas why it is doing this?
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Old 08-19-2012, 07:45 AM   #2
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Re: 96 mustang gt rough idle

Just unhook ur battery and see if that helps.
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Old 08-19-2012, 08:12 AM   #3
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Sounds like your car is in need of a tune up.
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Old 08-19-2012, 10:20 AM   #4
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It could be the IAC (idle air control) sensor it may need cleaning be very careful the sensor is VERY sensitive take it to a pro to test it. Or it can even be a loose vacuum tube.
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Old 08-19-2012, 10:52 AM   #5
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Quote:
Originally Posted by Scream
It could be the IAC (idle air control) sensor it may need cleaning be very careful the sensor is VERY sensitive take it to a pro to test it. Or it can even be a loose vacuum tube.
Where is the IAC located? And what can I use to clean it?

---------- Post added at 09:52 AM ---------- Previous post was at 09:50 AM ----------

Quote:
Originally Posted by jdavis96gt
Just unhook ur battery and see if that helps.
I tried that and it didn't make a difference
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Old 08-19-2012, 10:54 AM   #6
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It's connected to the throttle body and cleaning i don't know
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Old 08-19-2012, 11:00 AM   #7
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Originally Posted by Scream
It's connected to the throttle body and cleaning i don't know
Ok. I'm pretty positive the guy I bought the car from had already replaced the IAC because it was idling rough. I've only had the car a few months, could it have gotten that dirty or gone out that fast?
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Old 08-19-2012, 11:09 AM   #8
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Quote:
Originally Posted by Mitchel3408

Ok. I'm pretty positive the guy I bought the car from had already replaced the IAC because it was idling rough. I've only had the car a few months, could it have gotten that dirty or gone out that fast?
Anything is possible but I doubt it maybe a loose vacuum tube
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Old 08-19-2012, 11:18 AM   #9
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Quote:
Originally Posted by Mitchel3408

Ok. I'm pretty positive the guy I bought the car from had already replaced the IAC because it was idling rough. I've only had the car a few months, could it have gotten that dirty or gone out that fast?
Sounds like the guy just wanted to get rid of a problem and not really fix it himself.

2 options:

-Keep replacing items and spend a lot of money and time trying to figure it out. Not to mention the headache of it all, and the chance of creating more of a problem.

-Take it to a shop and let them figure it out for no more than 60.00.

---------- Post added at 12:18 PM ---------- Previous post was at 12:16 PM ----------

Not a dealership though. A shop that has been around for at least 10 years.
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Old 08-19-2012, 11:52 AM   #10
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Quote:
Originally Posted by Scream

Anything is possible but I doubt it maybe a loose vacuum tube
Ok I'll check it out
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