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Discussing wtf is wrong with my car? in the 99-04 Forum. if im at a low rpm in 4th or 5th (like 2500) and i floor ... Modded Mustangs is the premier Ford Mustang Forum on the internet. We discuss all aspects of the Ford Mustang on the forum. Registered Users do not see the above ads. Please Register - It's Free! |
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#1 |
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MM Fanatic
2001 Mustang GT
12s next time out...
Join Date: Apr 2008
Location: Florida
Posts: 3,659
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wtf is wrong with my car?like 2500....2600....2700...2800....2600....stays there for a second and goes back up im praying to god i dont need a new clucth could it just be needing a tune or maybe even its just realated to the fuel pump some how
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![]() NX wet kit, heater,purge,FPSS,window switch,PLX wideband,raptor shiftlight,msd tach adapter FRPP 410s, JLT CAI, STEEDA tri-ax, SCT x cal 3 STEEDA catback, SLP Loudmouths, UPR o/r X NITTO Drag Radials, Zoom racing clutch need tires-all mods FS |
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#2 |
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Enthusiast
2000 GT
Join Date: Dec 2006
Location: Washington
Posts: 876
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Your fuel pump bad? Saw you had a thread awhile ago but didnt read it. Could cause that. Doubt its tune unless you just had it tuned.
You would know if its clutch slippage, it would rev faster than that. And wouldnt hang. Datalog to see whats wrong...
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2000 Black convertible GT: KB 15psi, and other goodies... |
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#3 | |
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MM Fanatic
2001 Mustang GT
12s next time out...
Join Date: Apr 2008
Location: Florida
Posts: 3,659
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i dont have a problem when i race.... and i have no tune and my car is running like shit but ill have a tune in like a week or 2 and i THINK i have a warrenty on my clcuth with the shop that did it....
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![]() NX wet kit, heater,purge,FPSS,window switch,PLX wideband,raptor shiftlight,msd tach adapter FRPP 410s, JLT CAI, STEEDA tri-ax, SCT x cal 3 STEEDA catback, SLP Loudmouths, UPR o/r X NITTO Drag Radials, Zoom racing clutch need tires-all mods FS |
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#4 |
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I Post Entirely Way Too Much
1996 GT VERT PI at <3
Tell HMUSN he'll never catch me!!!
Join Date: Mar 2007
Location: "How does this thing work?"***BOOM***"Holy shit!!!, i just killed Zip!!!
Posts: 6,474
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get ur 02 sensors fixed yet?
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#5 |
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MM Fanatic
2001 Mustang GT
12s next time out...
Join Date: Apr 2008
Location: Florida
Posts: 3,659
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no...could that be it?
if so then im not worried about it just waniting on a little more cash till i can buy a tuner from joe
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![]() NX wet kit, heater,purge,FPSS,window switch,PLX wideband,raptor shiftlight,msd tach adapter FRPP 410s, JLT CAI, STEEDA tri-ax, SCT x cal 3 STEEDA catback, SLP Loudmouths, UPR o/r X NITTO Drag Radials, Zoom racing clutch need tires-all mods FS |
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#6 |
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Enthusiast
2000 GT
Join Date: Dec 2006
Location: Washington
Posts: 876
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Your o2s are bad? lol start there dude... fix what you got before you upgrade.
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2000 Black convertible GT: KB 15psi, and other goodies... |
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#7 |
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MM Fanatic
2001 Mustang GT
12s next time out...
Join Date: Apr 2008
Location: Florida
Posts: 3,659
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well i dont think thiers anythign wrong with the sensors...its just i got on o/r pipe with no tune or MILs
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![]() NX wet kit, heater,purge,FPSS,window switch,PLX wideband,raptor shiftlight,msd tach adapter FRPP 410s, JLT CAI, STEEDA tri-ax, SCT x cal 3 STEEDA catback, SLP Loudmouths, UPR o/r X NITTO Drag Radials, Zoom racing clutch need tires-all mods FS |
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#8 |
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Enthusiast
2000 GT
Join Date: Dec 2006
Location: Washington
Posts: 876
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So your rears are messing with you. A tuner could get them turned off. I would do that. Maybe reset the ecu (unplug battery) and see if it goes away. It will come back fast as the computer fills in its tables. Its probably the rear o2s messing with the tune bad.
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2000 Black convertible GT: KB 15psi, and other goodies... |
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#9 | |
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MM Fanatic
2001 Mustang GT
12s next time out...
Join Date: Apr 2008
Location: Florida
Posts: 3,659
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and when i unplug the battery my CEL stays off for like 2 hours but comes rite back on lol
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![]() NX wet kit, heater,purge,FPSS,window switch,PLX wideband,raptor shiftlight,msd tach adapter FRPP 410s, JLT CAI, STEEDA tri-ax, SCT x cal 3 STEEDA catback, SLP Loudmouths, UPR o/r X NITTO Drag Radials, Zoom racing clutch need tires-all mods FS |
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#10 |
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Hardcore Enthusiast
1993 Lx
18.458/71mph
Join Date: Jan 2008
Location: Bangin Megan Fox
Posts: 1,215
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sounds like ur clutch is slipping to me, slightly but still slipping
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GT40P's, TFS 1 Cam, Explorer Intake, 3.73s, Full Exhaust, 24 Lb injectors, 255lph fuel pump, CAI, UDP's, 65mm TB, blah blah blah Cowboys 4-1 |
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#11 |
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I Post Entirely Way Too Much
1996 GT VERT PI at <3
Tell HMUSN he'll never catch me!!!
Join Date: Mar 2007
Location: "How does this thing work?"***BOOM***"Holy shit!!!, i just killed Zip!!!
Posts: 6,474
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botom line is ur car will not run right because ur 02's are being tripped.
turn them off and i garuntee u ur problems will go away |
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#12 |
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Regular
2000 gt vert
IT WILL NEVER BE FAST ENOUGH!
Join Date: Oct 2007
Location: washington
Posts: 348
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+1 its your clutch
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Im topless, are you? ![]() ![]() Eibach Sportline Springs, 18x9 cobra r's, cdc side exhaust, cdc light bar, smoked headlights. Topless Mustang Club Founder August Birthday Club Member |
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#13 |
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Enthusiast
2004 Mustang GT
Join Date: Jan 2007
Location: Fort Worth, TX
Posts: 820
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i doubt its the clutch i dont think a clutch would hold you at a lower rpm
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2004 Black Mustang Gt"I'm a agent of chaos" -Joker,Dark Knight |
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#14 |
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I Post Entirely Way Too Much
1996 GT VERT PI at <3
Tell HMUSN he'll never catch me!!!
Join Date: Mar 2007
Location: "How does this thing work?"***BOOM***"Holy shit!!!, i just killed Zip!!!
Posts: 6,474
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his clutch is brand new........
i know it's Demello and all, but c'mon, he couldn't have Demellod himself that badly |
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#15 | |
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Enthusiast
2004 Mustang GT
Join Date: Jan 2007
Location: Fort Worth, TX
Posts: 820
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2004 Black Mustang Gt"I'm a agent of chaos" -Joker,Dark Knight |
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#16 |
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Enthusiast
2000 GT
Join Date: Dec 2006
Location: Washington
Posts: 876
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02's will mess your shit up when not working (or rears not turned off with no cats). I would start there.
He said it doesnt happen at WOT which clutch slippage would be way worse. "i dont have a problem when i race.... and i have no tune and my car is running like shit but ill have a tune in like a week or 2"
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2000 Black convertible GT: KB 15psi, and other goodies... |
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#17 |
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MM Ninjas!
2000 mustang GT
11.79@125
Join Date: Jan 2006
Location: PURCELL, OKLAHOMA
Posts: 8,990
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if his clutch was slipping, he would feel it more in the lower gears where there is actually more power running theough them. but he said it only happens in 4th and 5th though, so i dont see it being a clutch.
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#18 |
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Hardcore Enthusiast
Join Date: Jun 2007
Location: southcarolina
Posts: 1,084
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it does not sound like your clutch its like a few people already said your rpms would go up not down if it was slipping. but im telling you the two burn out videos you have. i watched both and i already told you once you keep letting your clutch out slow when you need to be dumping it. it wont be long before you burn that clutch up! how many miles are on your car? whens the last time you did a tune up?
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#19 |
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Regular
99' Mustang GT
N/A
Join Date: Apr 2008
Location: Milwaukie, Oregon
Posts: 68
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Yeah, definately not the Clutch. I would think htat it is your O2 sensors causing it. Also you asked if it could be your fuel pump... That would be Very unlikely due to the fact that when you are racing it and what not there aren't any problems. Also if it is a random accurance.... It may even be a mass air flow problem. Most likely your O2 though.
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#20 | |
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Regular
Join Date: Oct 2006
Location: In Reality, why where do you live?
Posts: 220
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If his clutch is slipping his RPM's would increase and his vehicle speed would stay the same or not increase with the same standard as the RPM's. SO, it's not that. When Fuel pumps go out they just don't work. Even if it "whines" and it's still starting your car, your fuel pump is fine or at the least working. Whens the last time you cleaned your Maf or checked to see if your intake system was connected correctly? If I where to guess without looking at it, I'd assume it was your ignition system, A bad coil.
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