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02-25-2007, 07:44 AM
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#1 (permalink) |
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Smoke Tires....Not Drugs.
Join Date: Sep 2006
Location: Orlando, Florida
Posts: 634
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Took it to advance this morning
And i had them hook a computer up to the mustang and it says that cylinder 4 and 8 are misfireing, So how can i fix this now?
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  2003 GT 5 Speed JLT CAI UPR Off-Road X-Pipe SLP LM 1 Steeda Tri-ax short throw www.myspace.com/rustysurfer07 |
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02-25-2007, 07:57 AM
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#2 (permalink) |
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Administrator
Join Date: Sep 2004
Posts: 6,374
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You need to know hy it is miss-firing. Either those cyclinders are getting fuel or spark? I would start by checking those plugs and by checking the coil packs.
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 Black 2000 GT Vert: Novi-2000 with Intercooler (375rwhp @ 9 psi); Tune by Kauffmans; Roush 380R Body kit; Steeda Subframes; Steeda Strut Tower Support; Deep Dish Bullets; FRPP 4:10's; SCT 4 Position Chip with four custom tunes; Steeda CAI; C&L Pleum; BBK 75 TB; SLP Loudmouth; SLP Catted X-Pipe; Bullitt Suspension; UPR Conrol Arms; Focus Fuel Pump My Car My Email |
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02-25-2007, 09:22 AM
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#3 (permalink) |
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Wowbagger hates me too!
Join Date: Nov 2005
Location: Magrathea/California
Posts: 7,015
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switch the coil packs from 2 other cylinders and have it re-tested. If it fails on the new cylinders then it's coil packs. If not, try spark plugs and possibly those two injectors.
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02-25-2007, 10:27 AM
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#4 (permalink) |
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Super Moderator
Join Date: Jan 2005
Location: Northern Va
Posts: 3,245
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Follow my write up, http://www.dndgarage.net/misfire.htm
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02-25-2007, 11:25 AM
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#5 (permalink) |
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Smoke Tires....Not Drugs.
Join Date: Sep 2006
Location: Orlando, Florida
Posts: 634
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I just got done cleaning everything (coil packs, spark plugs, and the injectors)
And now the service engine light went off  The car runs alot better then it did from last night, but it still sputters here and thier.
__________________
2003 GT 5 Speed JLT CAI UPR Off-Road X-Pipe SLP LM 1 Steeda Tri-ax short throw www.myspace.com/rustysurfer07 |
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02-27-2007, 08:31 AM
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#6 (permalink) |
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Member
Join Date: Feb 2007
Location: Northern Virginia
Posts: 49
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Take another look at the rubber boots on the coils; a tiny pinhole can cause this, you may see a small, chalky white area where the spark has jumped through.
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02-28-2007, 05:55 AM
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#7 (permalink) |
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Administrator
Join Date: Sep 2004
Location: Orlando,Florida
Posts: 7,421
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Your EGR can fail also; i had this happen to my car and it only gave misfire codes on two cyclinders. But i would be more willing to guess spark or fuel related for you. Mine went froma coolant line that blow and destroyed some wiring to the egr valve that stayed open all the time.
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Dustin 2002 GT Mustang 5-Speed Drag Radials,Sprayed,Powershifted   WOOO HOOOO! |
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02-28-2007, 06:16 AM
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#8 (permalink) |
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Super Moderator
Join Date: Aug 2005
Location: Randallstown, Md
Posts: 2,753
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you'll need to replace the 2 COP's (maybe more, once you disturb them) and proby should put in 8 new plugs. cleaning is a waste of time, esp injectors as FoMoCo has used deposit resistant fuel injectors since @1992
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02-28-2007, 07:57 AM
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#9 (permalink) |
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Smoke Tires....Not Drugs.
Join Date: Sep 2006
Location: Orlando, Florida
Posts: 634
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Everything is working right, after i cleaned everything the service engine light shut off and the engine is not misfiring anymore!
__________________
2003 GT 5 Speed JLT CAI UPR Off-Road X-Pipe SLP LM 1 Steeda Tri-ax short throw www.myspace.com/rustysurfer07 |
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