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Old 12-03-2011, 08:19 PM   #1
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rough idle ???

Any suggestions on why
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Old 12-03-2011, 10:05 PM   #2
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Tune up, idle air control motor, throttle position sensor maybe
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Old 12-03-2011, 11:25 PM   #3
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Yea I planned on cleaning idle control. Throttle body and maf tomorrow ....
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Old 12-03-2011, 11:30 PM   #4
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Sounds like a good way to start how do u plan to clean tps?

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 I mean how would u clean the idle air control sensor?
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Old 12-03-2011, 11:31 PM   #5
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Some site I found shows you how in steps with carb cleaner
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Old 12-03-2011, 11:37 PM   #6
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O that's cool could u send me the link pls
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Old 12-03-2011, 11:44 PM   #7
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Yep one sec I'm working

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http://www.muscularmustangs.com/iac.php

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Tells you a lot if you read all pages on it
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Old 12-04-2011, 08:02 PM   #8
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Re: rough idle ???

Bad plug .. or plug wire.. bad coil pack.. idle sensor.. bad vac line..
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Old 12-04-2011, 08:49 PM   #9
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Coil pack went out in Feb brand new one on looked like plug wot
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Old 12-05-2011, 11:54 AM   #10
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Re: rough idle ???

Do your duty and Seafoam the upper intake manifold. suck it in through the pcv valve with a drinking straw placed inside the Seafoam can and hold it up to the pcv valve while running. DONE- Runs great!
Put second can of seafoam in gas tank.
One can runs $7.77 here at parts store or WalMart.
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Old 12-05-2011, 01:00 PM   #11
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Re: rough idle ???

That's always a good idea ..
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Old 12-05-2011, 02:31 PM   #12
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Did all that idle is better but think I have a gas leak went about 60 miles today had a full tank now almost on a half
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Old 12-05-2011, 03:54 PM   #13
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Quote:
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Did all that idle is better but think I have a gas leak went about 60 miles today had a full tank now almost on a half
Tune up or depends how you drive.
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Old 12-06-2011, 02:54 AM   #14
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I need to know exactly what it should idle at at a stand stop and on average the mph its suppose to get mods yet besides k&n air filter in stock air box ..... I'm thinking the maf has the oil from the filter on it and is makeing it use more gas
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Old 12-06-2011, 02:20 PM   #15
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Still* mpg*
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Old 12-06-2011, 02:28 PM   #16
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I need to know exactly what it should idle at at a stand stop and on average the mph its suppose to get mods yet besides k&n air filter in stock air box ..... I'm thinking the maf has the oil from the filter on it and is makeing it use more gas
Idle is like 900 to 1000 rpm does this help any???
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Old 12-06-2011, 02:54 PM   #17
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Re: rough idle ???

Yeah, idle is 900 and poor gas mileage like that can indicate a vacuum leak. Possibly around the egr lines. Eventually an ecm code should appear. Normal gas mileage best scenario is 24++ MPG.
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Old 12-06-2011, 02:58 PM   #18
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Ok idle is right then its about 900 and I figured it and it comes out to 19 mpg drive 80 miles a day that's about 4 gallons a day sound right ??
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Old 12-06-2011, 03:05 PM   #19
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Depends on how you drive and where you drive.

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Do you have any engine codes?
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Old 12-06-2011, 03:08 PM   #20
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Nope and its straight highway to work thats all I ever drive
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Old 12-06-2011, 05:05 PM   #21
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Sea foam is a miracle love that stuff, also puts on a great show lol
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Old 12-06-2011, 06:04 PM   #22
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Sea foam is a miracle love that stuff, also puts on a great show lol
Lol
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Old 12-07-2011, 12:04 AM   #23
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Re: rough idle ???

Oh yeah, cheap insurance that is re-doing even if you said it has been done is to get two cans of Seafoam, one in tank and one sucked in vacuum line plus replace the fuel filter one more time. It's cheap insurance to help eliminate a little bit of second guessing!
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