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  • SN95 4.6L Mustang Tech

96 GT 2v stutters under WOT

  • Thread starter Thread starter invertmast
  • Start date Start date Dec 16, 2005
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invertmast

Founding Member
Dec 12, 2001
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North Port, FL
Dec 20, 2005
#21
  • Dec 20, 2005
  • #21
Already did its not them.. This is more noticeable when you let out the clutch.. Its kinda like a very low frequency vibration, like something is rubbing, but nothing is.
 

invertmast

Founding Member
Dec 12, 2001
379
0
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North Port, FL
Dec 20, 2005
#22
  • Dec 20, 2005
  • #22
OK,
re-gapped the plugs to .035" and its about the same as before i regapped them.. I know what the rubbing/grinding is now, so i'm not worried about it..

But i'm still wondering whats up with the stuttering in 3rd + gears when you go to WOT... maybe the tunes just off and its got alot of fuel being poured to it and its taking a while to clean out???
 

COramprat

...I can take it. I think.
20+ Year Stangneter
Mar 2, 2003
8,474
1,463
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Sea of Tranquility
Dec 20, 2005
#23
  • Dec 20, 2005
  • #23
Could be...I know older cars would flood out with a goofy carb and shut down. Now the computer seems to sense it and pull fuel. What kind of tune do you have?
 

invertmast

Founding Member
Dec 12, 2001
379
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North Port, FL
Dec 20, 2005
#24
  • Dec 20, 2005
  • #24
From what I understand, when you buy the FRPP supercharger, they send a recalibrated computer when you purchase the "install" kit for the Supercharger... But i do plan on getting it dyno tuned, when i slap on the 3.1" pulley
 

stangGT97

New Member
Dec 22, 2004
1,299
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0
Boston area, MA
Dec 20, 2005
#25
  • Dec 20, 2005
  • #25
invertmast said:
From what I understand, when you buy the FRPP supercharger, they send a recalibrated computer when you purchase the "install" kit for the Supercharger... But i do plan on getting it dyno tuned, when i slap on the 3.1" pulley
Click to expand...

i would have tuned it when i put on the supercharger in the first place.... your tune could be causing lean spots in the power band. If its not that, do you still have the stock clutch? Maybe its slipping which is causing a studdering sensation, mine does that a little
 

invertmast

Founding Member
Dec 12, 2001
379
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North Port, FL
Dec 21, 2005
#26
  • Dec 21, 2005
  • #26
i bought the car used 2 1/2 weeks ago w/ everything already done to it, and it just started doing this about a week and a half ago.. The car also has a Centerforce dual friction clutch in it.
 

blackfang

Founding Member
Dec 17, 2001
1,290
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Richmond, Va
Dec 21, 2005
#27
  • Dec 21, 2005
  • #27
For the stuttering, guys, don't waste your money on fuel injector cleaner from the auto store. Half the crap has an alcohol base and can wear down the inside of the injectors over time, and two, its going to be diluted to the point it wont even do a thing by the time it gets in the injector.

I would check the MAF and have it cleaned. Make sure you have the screen still in it. Also have any of you rotated the maf at all? that can play a factor in it.
 

mrvax

Stay thirsty my friends
Founding Member
Nov 29, 1999
5,225
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SN Moderator: Orlando, Fl.
Dec 21, 2005
#28
  • Dec 21, 2005
  • #28
Another oft overlooked thing is the throttle body. Visually inspect it for gunk buildup. You should be able to have the car running (with some help) and spray carb cleaner in the TB. Spray it until it's nice and clean with the engine running.
 
9

96gtcan2

New Member
Feb 15, 2003
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0
South,TX
Dec 23, 2005
#29
  • Dec 23, 2005
  • #29
TangerineGT96 said:
mass air sensor dirty maybe that would be my only guess
Click to expand...


Second that. My car was doing the same thing I used some contact cleaner on the maf and cleaned the screen and problem solved. Also it could be you coil packs.
 

invertmast

Founding Member
Dec 12, 2001
379
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16
North Port, FL
Dec 23, 2005
#30
  • Dec 23, 2005
  • #30
MAF and IAT sensor's cleaned
And
Coil packs replaced.. Its not as bad anymore, but it still does it between 2200 and 2800 rpm, then it clears up and runs like a scalded dog...
 
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