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.

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Old 12-23-2007, 01:48 PM
  #11  
shock69
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Default RE: need help

with a dirty iac would that cause power lose poping on that side of the engine and it just will not stay running
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Old 12-23-2007, 01:55 PM
  #12  
HACKGT350
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Default RE: need help

popping noise? you sure you got your timing set right and your firing order right?
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Old 12-23-2007, 02:08 PM
  #13  
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well the car ran great last night. i went to start it this morning and it would not idle. when your drive it it has no power i guess it is more of a light popping noise. if you dont pump the gas it wants to stall. on power either the motor sounds not as loud.
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Old 12-23-2007, 02:20 PM
  #14  
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anyone got any ideas please
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Old 12-23-2007, 05:45 PM
  #15  
HACKGT350
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someone play a trick on you and mess with the firing order or unplug a big vacuum line?
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Old 12-23-2007, 05:51 PM
  #16  
86GreenMachine
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Default RE: need help

Check your TPS(throttle postion sensor)voltage.Its the black thing on top of the throttle body.you can also check for engine codes.http://myshifter.com/joel50/EECTEST.html
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Old 12-23-2007, 05:57 PM
  #17  
uedlose
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Default RE: need help

check the mass air make sure it is plugged in and make sure the intake boot is on it with no leaks between the mass air and the T/B on the intake. the mass air is the round aluminum thing on the end of the black hose that comes off the intake on the pass. side of the car. right behind the air filter.
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Old 12-23-2007, 11:08 PM
  #18  
shock69
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ok the self test how do i perform that. And like i was saying it ran great last night then when started it would not idle. with the tps bad would that cause it to lose power. when you give it gas it wants to stall and when u let up it kinda of comes back. with a dirty iac would that cause it. the timing or plug wires or anything like that was touched i just parked and went to start it today and it all started.
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Old 12-24-2007, 05:08 AM
  #19  
uedlose
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yes a Bad tps can also do this
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Old 12-24-2007, 03:30 PM
  #20  
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ok guys did the code scan got 95 secondary fuel pump fail and code 96 high speed fuel relay open circiut and help on what and where i can fix this please all the help is great thanks a lot guys rob
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