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.

95 5.slow help!!

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Old 07-06-2008, 09:25 PM
  #11  
mjr46
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Default RE: 95 5.slow help!!

ORIGINAL: mrxr250rider

yeah,the check engine light recently starting coming on and i relized it started overheating,so i think the check engine light has to do with the overheating problem.the check engine light never used to come on even though it never seemed to run right.
it also seems to be really bad on gas,i figured id throw that in there.
you can run a KOER test yourself ..google DIY koer test and you should be able to find a GOOD write up by JOEL5.0........the CEL shouldn't have anything to do with overheat...two seperate probs most likely... pull the codes to get a place to start with diagnostics...the running bad and CEL are most likely related
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Old 07-07-2008, 05:05 PM
  #12  
mrxr250rider
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Default RE: 95 5.slow help!!

ORIGINAL: NoGo95GT

Are you using the 160 thermostat that you bought? If so that could be some of the problem. Get a 180 and, put in the fuel filter and clean your MAF. I think your car will run much better.
yes but the check engine light and what not was on before i put in the 160,it seemed to run better once i replaced the thermostat.

my friend i work with his dad owns his own shop and he said he can probably run a diagnostic test for me for free.
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Old 07-07-2008, 05:46 PM
  #13  
NoGo95GT
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Default RE: 95 5.slow help!!

Yeah, getting the test done would be great. Another problem could also be bad oxygen sensors which would trigger the check engine light. Just a thought. Good luck though.
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