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.

high rpm stutter

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Old 02-17-2006, 09:42 PM
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ckyguy68
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Default high rpm stutter

ok, i have another problem...its just one after another.... anyways, my car feels great and runs real strong up to about 4200 rom then it just starts to stutter and just stop accelerating and it will just keep stuttering. its really pi$$ing me off! this is under full throttle. it was fine yesterday! what is going on???
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Old 02-17-2006, 09:47 PM
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PRO50SC
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Default RE: high rpm stutter

Secondary ignition break down, lack of fuel possibly. How does it run otherwise? Idle quality, normal driving conditions.
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Old 02-17-2006, 09:52 PM
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95_302_StangMan
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Default RE: high rpm stutter

Could your valves be floting? Your valves might not be getting closed tight. What valve spring do you have?
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Old 02-17-2006, 10:01 PM
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powerkord
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Default RE: high rpm stutter

My car started doing that last week, and then on saturday, going down the driveway, the fuel pump died
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Old 02-17-2006, 10:10 PM
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ckyguy68
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Default RE: high rpm stutter

great. my fuel pump doesnt make too much noise. if you at a idle you can hear a faint buzzing. i have stock valve springs on the car. it is great when idling, and when i drive it normally. the fuel pump primes just fine too. maybe i should get one SOON just to be on the safe side... ideas?
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Old 02-17-2006, 10:13 PM
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Default RE: high rpm stutter

It couldnt hurt........
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Old 02-17-2006, 10:26 PM
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powerkord
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Default RE: high rpm stutter

You might want to get some more opinions b4 you do that though, theres nothing worse than replacing something that wasnt broke, and still having the same problem.




EDIT: On second thought, there is one thing worse.....Gay man-rape....But I think thats irrelevant here.
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Old 02-17-2006, 10:33 PM
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ckyguy68
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Default RE: high rpm stutter

WTF!!!!! i just took it for a ride, the battery voltage kept dropping and it got so bad the car almost stalled in front of my house!!!! it seems the alternator is not charging the battery?! it was fine yesterday! i have no idea what is going on but this is bad i use this car to get to work!!! help!
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Old 02-17-2006, 10:51 PM
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ORIGINAL: ckyguy68

WTF!!!!! i just took it for a ride, the battery voltage kept dropping and it got so bad the car almost stalled in front of my house!!!! it seems the alternator is not charging the battery?! it was fine yesterday! i have no idea what is going on but this is bad i use this car to get to work!!! help!
Well that could be your problem. Not enough voltage to supply your electronics.
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Old 02-17-2006, 11:19 PM
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Tims 88GT
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+1 PRO50SC
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