5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Throttle Problem!!

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Old Oct 2, 2006 | 10:40 PM
  #1  
Creetan's Avatar
Creetan
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2nd Gear Member
 
Joined: Aug 2006
Posts: 193
From: TEXAS
Default Throttle Problem!!

Ok so I finally figure out why my car was running so rough. The vacum line to the MAP sensor had came off. I replaced the line cause it was in bad shape. Now the car runs GREAT. However I am having this problem with the throttle. When I get on it it seems like it takes a sec or 2 to get going. Should there be this delay in it?? Also when the car warms up and I get on it when it reaches 3000-3500 rpms it sounds like a very very small back fire and it only does it once. Doesn't seem to hurt how it performs though. Could it be maybe my timing needs to be reterd a couple degrees?? I have it set at 14* now. Starts right up and drives fine cold. Also the plate inside the TB seems to be sticking at both idle and WOT I tried taking it apart and cleaning the hell out of it with TB cleaner. Could the TB just be worn out?? I took the car out for a test drive thinking I had it fixed and the throttle got stuck at about 4500rpms while I was still in my neighborhood.. Kinda scary since all the little kids were out and about. Just when I was pulling into my drive it became unstuck. Any help is greatly appreciated! Thanks.
Old Oct 2, 2006 | 11:11 PM
  #2  
92hatchLX's Avatar
92hatchLX
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Joined: Feb 2005
Posts: 8,439
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Default RE: Throttle Problem!!

Did you clean the inside of it where the butterfly sits when it's at idle??? Go get a new bigger TB and it'll cure your problem
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