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Old 07-12-2013, 07:03 PM   #1
hbola01
 
Join Date: Jul 2013
Vehicle: 2005 Ford Mustang GT
Location: Ontario
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Default 2005 Mustang GT idle problem

Hey guys I've recently been having some problems with the idling on my 2005 Mustang GT. So the other day I was gone for a drive on the highway and my cruise control randomly stopped working and later that day at the lights my car tried stalling so I revved it up high and the attempt to stall and the rough idle went away. The next day after I started it up it again didn't seem to be idling right but wasn't that bad. So I decided to clean the throttle body. After cleaning it, it now seems to be way worse. It idles around 2000 rpm and when I rev up it comes down really slow, also sometimes it randomly drops down to 1500 or shuts off. So I think it may be the TPS. Even when I turn the car off I feel an odd shake that is not suppose to be there from the front of the car. The engine light has been on since I got long tube headers and high flow cats a couple months ago, because of the O2s. But now it is giving some more error codes. I have reset the computer and erased the codes a couple times and I've gotten a bunch of different codes every time I reset it. The codes that it has been giving are (P0122, P0223, P061b, P2106 and P2110)(P0507 and P100)(P0122, P0233, P0507, P061b, P1000 and P2104)(P1000). Any idea what it could be? I'd like to know if it could actually be the TPS before I go out and replace it. Also do you think the car is drivable to my mechanic? Please let me know if you require any more info. Thanks
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Old 07-12-2013, 08:41 PM   #2
cema93
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I had a similar problem. I cleaned my throttle body just cause it was dirty. Now the rpm takes a while to come down. But with ur idle and stuff ur talking about, I'd take it to ford. I unhooked my battery to see if u could clear it up. Ended up frying the PCM. Soooo ya. If I were u I'd take it to ford
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Old 07-12-2013, 08:52 PM   #3
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Do you have a tuner? If so have you tried reloading your tune or playing with the idle speed? Honestly I would probably take it to a trusted mechanic or a ford dealership rather than screw something up trying to troubleshoot it yourself.
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Old 07-13-2013, 12:29 AM   #4
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okay sounds good, I'll take it to a mechanic tmw. thanks
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Old 07-13-2013, 12:57 AM   #5
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The crazy thing is that one fault can cause all the other codes to pop up. I had a dirty MAF sensor and three spark plugs with loose terminals that caused me a lot of headaches a few years ago on my 08. Luckily, it was narrowed down to spark plugs 3, 4, 6 a dirty MAF sensor from a less than maintained air filter from a cold air intake....
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Old 07-14-2013, 08:37 PM   #6
hardcore302
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I cleaned the TB as well as the MAF and threw in a bottle of Gumout Regane in the tank, did an Italian tune-up (real hard drive on the highway) and It cleared up .
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Old 07-14-2013, 09:00 PM   #7
White05GT
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The owners manual has instructions on resetting the idle. Worked for me after cleaning my throttle body.
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Old 07-14-2013, 09:00 PM
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