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Old 02-03-2012, 01:25 PM   #1
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Rough idle normal?

2002 GT; the idle isn't anything really rough or anything... Just shakes the car a bit and the exhaust changes audibly to an extent. Is this normal? It feels like it won't get any smoother.
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Old 02-03-2012, 01:30 PM   #2
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Re: Rough idle normal?

Rough idle for a v8 Mustang;
Is it normal? Yes.
Is it supposed to be like that? Probably not.
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Old 02-03-2012, 02:03 PM   #3
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My 04 GT mostly idles smooth, but gives me a random little bump every few seconds, not much just enough to notice if im paying attention. Is that what you are experiencing?
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Old 02-03-2012, 03:18 PM   #4
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Re: Rough idle normal?

what rpm? try cleaning your MAF, check/replace plugs and tune up maybe consider seafoaming
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Old 02-03-2012, 03:38 PM   #5
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Had a similar problem about a week ago!.. Thought a hose on the intake got lose!.. Found some of my clamps on my CAI were lose!.. I tightened them down and problem solved!..
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Old 02-03-2012, 03:59 PM   #6
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Quote:
Originally Posted by AgentOrange
My 04 GT mostly idles smooth, but gives me a random little bump every few seconds, not much just enough to notice if im paying attention. Is that what you are experiencing?
Yes. That's sorta like it.

And I did all of that, Spector.
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Old 02-03-2012, 06:08 PM   #7
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Quote:
Originally Posted by ColeJohnson

Yes. That's sorta like it.

And I did all of that, Spector.
Mine does it too and my last 01 GT did it could be trapped exhaust not getting out fast enough is what I've heard b4. I was suggested since I had so many bolt ons to get a set of better headers. Idk could be wrong.
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Old 02-03-2012, 06:17 PM   #8
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Quote:
Originally Posted by jjsg09

Mine does it too and my last 01 GT did it could be trapped exhaust not getting out fast enough is what I've heard b4. I was suggested since I had so many bolt ons to get a set of better headers. Idk could be wrong.
Def wrong. You don't need headers for bolt ons. Idk but anyway. Try cleaning the IAC and ur throttle body. Does it do it while your ac Is on or off??
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Old 02-03-2012, 11:45 PM   #9
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Originally Posted by Jamesgt08

Def wrong. You don't need headers for bolt ons. Idk but anyway. Try cleaning the IAC and ur throttle body. Does it do it while your ac Is on or off??
Where's the iac? And I never use my AC so idk if it does it while it's on.
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Old 02-04-2012, 02:26 AM   #10
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Lol Idle Air Control bro its on the side of your throttle body
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Old 02-04-2012, 02:30 AM   #11
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No it's not on your throttle body. It's coming out of your plenum.
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Old 02-04-2012, 08:34 AM   #12
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Quote:
Originally Posted by Jamesgt08

Def wrong. You don't need headers for bolt ons. Idk but anyway. Try cleaning the IAC and ur throttle body. Does it do it while your ac Is on or off??
Ok i said " what I have heard " don't be an *** about it.
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Old 02-04-2012, 09:20 AM   #13
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I wasn't bein an *** about. If u thought I was I'm sorry.
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Old 02-04-2012, 03:15 PM   #14
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Originally Posted by Jamesgt08
I wasn't bein an *** about. If u thought I was I'm sorry.
Ok just thought it did but if it wasn't were cool.
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Old 02-04-2012, 03:22 PM   #15
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The only reason to absolutely need new headers is when your getting turbos.
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Old 02-15-2012, 11:50 PM   #16
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If you have a variation in your rpms at idle. Try turning off your ac/defroster. If that stops it. You may need a new ac compressor. If the compressor is shot it will rob power from your motor thus creating the over/ under idle.
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Old 02-20-2012, 01:02 PM   #17
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Originally Posted by Hansen01
If you have a variation in your rpms at idle. Try turning off your ac/defroster. If that stops it. You may need a new ac compressor. If the compressor is shot it will rob power from your motor thus creating the over/ under idle.
I fixed it. Found a vacuum leak finally. Replaced the hose and purrs like a kitten now.
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Old 02-20-2012, 02:49 PM   #18
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Quote:
Originally Posted by ColeJohnson

I fixed it. Found a vacuum leak finally. Replaced the hose and purrs like a kitten now.
Lol. The one thing I don't like about these cars!.. One little vacuum leak can cause all kinds of problems!..
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Old 02-20-2012, 04:12 PM   #19
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Quote:
Originally Posted by ColeJohnson

I fixed it. Found a vacuum leak finally. Replaced the hose and purrs like a kitten now.
Glad I could be of assistance.
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