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.

acting funny!

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Old 04-02-2007, 12:24 AM
  #11  
F5GTS331
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Default RE: acting funny!

it still acting weird. it just does it all of a sudden and its like something is holding it back. and it runs rougher kinda like its missing, but it clears up when i turn it off then back on for a little while. dont know wherre to start lokkin its drivin me crazy!!!!!!
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Old 04-02-2007, 02:58 AM
  #12  
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nobody got any ideas where to start lookin?
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Old 04-02-2007, 03:39 AM
  #13  
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come on somebody??????
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Old 04-02-2007, 03:46 AM
  #14  
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Default RE: acting funny!

thats just how 5.0's are dude, go buy a Honda!




HAHAAH just kidding , but ya idunno
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Old 04-02-2007, 03:48 AM
  #15  
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Default RE: acting funny!

Hmm im no expert but have you checked the obvious? like check and make sure all your plugs are firing? If ones not firing you'd definetely notice a rougher idle and loss of power.
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Old 04-02-2007, 03:51 AM
  #16  
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Default RE: acting funny!

but why would it clear up after i turn it off then back on?
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Old 04-02-2007, 03:55 AM
  #17  
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Default RE: acting funny!

umm from what i heard on the forums ( i dont actually know and i may be wrong) some ignition parts work better when theyre cold, like if theres a crack in something is expands when the cars warmer. I'm sure someone has a better idea of what im talking about.
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Old 04-02-2007, 04:17 AM
  #18  
92cobra
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Default RE: acting funny!

does it happen only when the car is hot or cold or all the time. Depending on when it happens, could be an o2 sensor, or tfi module.
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Old 04-02-2007, 07:45 AM
  #19  
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Default RE: acting funny!

It might be your O2 sensors. I had jeep that acted like it was missing under load. Over time it got really bad and the motor had almost no power but would idle kind of rough. After letting it sit for about 5 minutes it would run ok. Changed the o2 sensor and all was better.
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Old 04-02-2007, 07:42 PM
  #20  
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just when its hot and after about twenty minutes of driving. cuz it was fine til i al most got to work this morning and then fine again on the way home til i almost get here
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