4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

HELP!!! Car feels like its missing or cutting out!

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Old 04-12-2008, 03:29 PM
  #11  
Obsequious1
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Default RE: HELP!!! Car feels like its missing or cutting out!

How much boost are you pushing? What size MAF meter do you have?
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Old 04-12-2008, 04:23 PM
  #12  
35thAnni99GT
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Default RE: HELP!!! Car feels like its missing or cutting out!

ORIGINAL: Obsequious1

How much boost are you pushing? What size MAF meter do you have?
At part throttle I don't think it's the boost affecting MAF especially if they tuned it on the dyno they had to get some WOT pulls in @ ambient temp
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Old 04-12-2008, 04:40 PM
  #13  
dsg39th
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Default RE: HELP!!! Car feels like its missing or cutting out!

yeah im only running 8lbs of boost, and my MAF isnt even close to pegging out....i did pick on osme o2 sensors on my lunch break so im gonna put those i this evening and see how well that helps it...
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Old 04-12-2008, 04:41 PM
  #14  
fobra570
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Default RE: HELP!!! Car feels like its missing or cutting out!

ORIGINAL: dsg39th

I just put my procharger on my 03gt. When i got it tuned afterwards, it cuts out, like its missing or cutting off the fuel. Travis at gearheads told me to get new spark plugs and o2 sensors. my sensors were sticking real bad. So i got new tr-6 spark plugs to replace the factory plugs. But it still acts like it misses and cuts out, even when im not getting on it real hard. Any suggestions? I still havent got then new o2 sensors, but i didnt think that would cause it to miss and cut out....? A friend also suggested new boots for the plugs, but when we replaced the plugs they didnt look flared out at all???? Could a bad coil cause this?

Any advice or suggestions?

u said it urself when u wrote this that i happened AFTER u had it tuned it was my first Asumtion that u were getting the short end of the stick i was just looking out 4 u.....u should have given us that info in the first place
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Old 04-12-2008, 05:33 PM
  #15  
dsg39th
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Default RE: HELP!!! Car feels like its missing or cutting out!

ok well anyways, the facts are the facts, somethings wrong and all i want is peoples suggestions, so the tune being bad or tuner being an ******* is out the question...because i know thats not the case, but thanks for looing out anyway

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Old 04-12-2008, 05:34 PM
  #16  
35thAnni99GT
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Default RE: HELP!!! Car feels like its missing or cutting out!

did you already try to single out the easy stuff? o2, cops, plugs, fuel filter, leak?
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Old 04-12-2008, 05:47 PM
  #17  
dsg39th
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Default RE: HELP!!! Car feels like its missing or cutting out!

well im still at work i get off in 20 minutes....

i put new tr-6 plugs in there, but didnt gap them yet, so im gonna gap them when i get off, and put the new o2 sensors in....if none of that helps it, im not really hurt because i needed those anyways, my o2's looked like they were throwing up all over the computer screen when we hooked it up.

if those dont work, then i can try to pin point the coils if its those. and if it is then im gonna try to see if i can tell the exact coils(s) that its missing on. that way i dont have to spend $380 on all new coils. Im pickin up a new fuel filter after work also, i need to replace it anyways, another thing im not gonna be out if it doesnt fic the problem...
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Old 04-12-2008, 05:48 PM
  #18  
dsg39th
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Default RE: HELP!!! Car feels like its missing or cutting out!

as far as the leak, the vaccum gauges reads about 18-20psi, which it normal, if it does have a leak it a a very very small leak which shouldnt affect the driveability, at least not as much as it does now.
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Old 04-13-2008, 05:45 PM
  #19  
1997Stang
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Default RE: HELP!!! Car feels like its missing or cutting out!

Happened to my 97gt when i got it out of storage this year. Have you washed your engine bay anytime lately? My car was missing real bad when i got on it, took out the spark plugs and their was water underneath, cleaned out the water, put the plugs back in and runs perfect now.
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