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

01 gt bogging at 4000 to 4500 rpm

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Old 02-21-2019, 06:39 PM
  #1  
Corytabar42
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Default 01 gt bogging at 4000 to 4500 rpm

Ok im new here but nor my first stang i have a 2001 mustang gt convertable 4.6 auto just started getting this problem its weird how it happens ill get in to go and its fine i can floor it and it hauls *** as it should but say 15 mins into drive its fine till i floor it agen then it hits 4000 to 4500 rpm and just falls on its face and boggs and is just stuck at that rpm ill let off and its will cruse fine iv tested this when it happens i can pull over shut it off and restart it and its fine for like 8 mins then righr back to doing it agen and it did not do this when i first got it 6 months ago amd car jas no motor mods all i have done it put summit shorty glass packs on it and i also put a good used shifter cablein it and it seems to be adjusted fine and problum started few months after so i didint think there linked i have documents that show in 2011 a shop put a motor in the car but that was years and 83k miles ago please i need help if i missed any info that helps let me know if i posted this in the wrong part of the forums my bad
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Old 02-24-2019, 07:24 AM
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tadpole1969
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change your fuel filter first , then if problem remains check your fuel injectors
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Old 02-24-2019, 07:31 AM
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02 sensors could cause that issue also
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Old 02-24-2019, 09:15 AM
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Corytabar42
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Yea i dont even have a check engine light or pending codes for anything but its weird how if i turn tge car off and restart and problem is gone for a short period and it seems this problem does not start till cars under half tank of gas to just noticed that lastnight
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Old 02-24-2019, 01:46 PM
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tadpole1969
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weak fuel pump
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Old 02-24-2019, 03:43 PM
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I have a good used tank with pump i will have to throw in and re test thank you for your input i have been drawing a blank and car was rear ended at one point to and i get the problum of when i put gas in and it won't let me put gas in kicks the pump off as im filling ever 2 seconds
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Old 02-24-2019, 07:00 PM
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tadpole1969
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ah that sounds like the purge valve is dirty or gone
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Old 02-28-2019, 08:46 PM
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Do you think that purge would cause the the whole problem
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Old 02-28-2019, 11:15 PM
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tadpole1969
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yes very possible
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Old 02-28-2019, 11:40 PM
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I will have to get under it this weekend to take a look at whats going on in there just to damn cold
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