5.0L General Discussion This section is for non-tech specific information pertaining to 5.0L Mustangs.

Why does my car do this??

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Old Oct 17, 2008 | 11:29 AM
  #1  
white-lightning's Avatar
white-lightning
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Joined: Aug 2008
Posts: 11
From: New Mexico
Default Why does my car do this??

Ok when ever i get 1/2 throttle it tries to bog out, but if a hit hard it comes alive. what can i check?
Also it hard developed a valve trian knock?how do you solve this by compression drop, how do you adjust the valves??
Old Oct 17, 2008 | 11:33 AM
  #2  
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USMC1775
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From: The P.R.K.
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If it was carbed, Id know the prob, but since it says 90 in your info, youre FI.

It could be a few things, fuel related, spark related, or air related. Sounds like a fuel problem because of your positioning of the skinny pedal.. check your FP first, that could lead you somewhere

As for the valves, you have to remove the VCs, and its kinda obvious from there if youve done it before
Old Oct 17, 2008 | 02:12 PM
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mjr46
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From: West Virginia
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try cleaning the maf sensor or run a koer test and see if any codes come up, there may be an issue with the tps
Old Oct 18, 2008 | 11:48 AM
  #4  
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white-lightning
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From: New Mexico
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Originally Posted by USMC1775
If it was carbed, Id know the prob, but since it says 90 in your info, youre FI.

It could be a few things, fuel related, spark related, or air related. Sounds like a fuel problem because of your positioning of the skinny pedal.. check your FP first, that could lead you somewhere

As for the valves, you have to remove the VCs, and its kinda obvious from there if youve done it before
Ive never delt with valve knock, and tips or other thread with a how to?
what should the FP be?
Old Oct 18, 2008 | 11:50 AM
  #5  
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white-lightning
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From: New Mexico
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Originally Posted by mjr46
try cleaning the maf sensor or run a koer test and see if any codes come up, there may be an issue with the tps
Its got a new tps on it ill try cleaning out the tps
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