03 gt

Burrito · April 21st, 2010, 12:21 AM

alrights guys i have had this mustang for about 3 years. about a year ago the check engine light came up and i had gone to autozone to check da codes. the MAF and IAC had came up i had replaced them both and still nothingg. stayed the same. i had gotten a remote start viper alarm hooked up at best buy and the guy told me that cyclinder 6 was misfiring. got the coil replaced. but i havent checked the codes yet. around 3000 to 3500 rpm, i get somewhat like a jolt 3 times. pulls back and forth. its weird. only does this sometimes. when i take off fast it will not do this. the only upgrades this mustang has is a k&n cold air intake. PLZZ HELPP

Scott2001GT · April 21st, 2010, 12:23 AM

check your vacuum lines first

huggy bear · April 21st, 2010, 12:27 AM

+1

Torrito · April 21st, 2010, 12:30 AM

Originally Posted by Burrito

alrights guys i have had this mustang for about 3 years. about a year ago the check engine light came up and i had gone to autozone to check da codes. the MAF and IAC. had came up i had replaced the and still nothingg. stayed the same. i had gotten a remote start viper alarm hooked up at best buy and the guy told me that cyclinder 6 was misfiring. got the coil replaced. but i havent checked the codes yet. around 3000 to 3500 rpm, i get somewhat like a jolt 3 times. pulls back and forth. its weird. only does this sometimes. when i take off fast it will not do this. the only upgrades this mustang has is a k&n cold air intake. PLZZ HELPP

check the 02 sensor also

Burrito · April 21st, 2010, 12:35 AM

had a mechanic look at it and he said there were no vaccum leaks. it doesnt have a rough idle. just those damn joltssss. (pull back and forth) dont know the hell it is. my father had told me that it could be the intake manifold cuz it plastic. but i would thing i would have a ugly idle.

elund126 · April 21st, 2010, 01:48 AM

My 03 does the same thing, but it's more noticeable in 3rd gear. I had a dealership tell me that I had a misfire on #7, but I never threw any codes at all. My car does it on a light acceleration. I'd be interested to find out if you ever solve your problem.

Burrito · April 21st, 2010, 01:58 AM

realllyy crazy ill let u know if i figure it out. little by little im gonnaa replace all the coils. see what happens.

Scott2001GT · April 21st, 2010, 06:48 PM

mine does it too but it was the fuel cut off on de-cel and was doing it. But mine was more mph than rpm speed. Did it are 40 to 30 on de-cel. I dont think mines a misfie though b/c it does do it everytime and it mostly on de-cel.

April 21st, 2010, 12:21 AM	#1
Burrito Regular 2003 Mustang GT Join Date: Oct 2008 Location: tx Posts: 150 iTrader: 1 reviews	CHECK ENGINE LIGHT 03gt alrights guys i have had this mustang for about 3 years. about a year ago the check engine light came up and i had gone to autozone to check da codes. the MAF and IAC had came up i had replaced them both and still nothingg. stayed the same. i had gotten a remote start viper alarm hooked up at best buy and the guy told me that cyclinder 6 was misfiring. got the coil replaced. but i havent checked the codes yet. around 3000 to 3500 rpm, i get somewhat like a jolt 3 times. pulls back and forth. its weird. only does this sometimes. when i take off fast it will not do this. the only upgrades this mustang has is a k&n cold air intake. PLZZ HELPP Last edited by Burrito; April 21st, 2010 at 01:08 AM.

April 21st, 2010, 12:23 AM	#2
Scott2001GT BYAHHHH! 2001 Mustang GT 13.874 Join Date: Mar 2008 Location: Missouri Posts: 14,793 Blog Entries: 1 iTrader: 3 reviews	check your vacuum lines first __________________ Precision Turbo\|TurboSmart\|TeamZ\|Strange\|Hellion\|BBK\|SCT\|Edge Converters\|Fairbanks\|CG Fabrications\|Treadstone

April 21st, 2010, 12:27 AM	#3
huggy bear Enthusiast 2001 Mustang GT .23333333 minutes Join Date: Aug 2009 Location: Inbetween a rock and a hard place Posts: 536 iTrader: 0 reviews	+1 __________________ 2001 Mustang GT: 10.5 bullit rims, straight pipes, 180 degree t-stat, rear upper control arms, power slot rotors, hawk pads. fml

April 21st, 2010, 01:48 AM	#6
elund126 Newbie 2003 Mustang GT vert Join Date: Feb 2008 Location: Bonney Lake, WA Posts: 40 iTrader: 0 reviews	My 03 does the same thing, but it's more noticeable in 3rd gear. I had a dealership tell me that I had a misfire on #7, but I never threw any codes at all. My car does it on a light acceleration. I'd be interested to find out if you ever solve your problem. __________________ 2003 GT Convertible K&N Flowmaster 40 series Little by little......

April 21st, 2010, 06:48 PM	#8
Scott2001GT BYAHHHH! 2001 Mustang GT 13.874 Join Date: Mar 2008 Location: Missouri Posts: 14,793 Blog Entries: 1 iTrader: 3 reviews	mine does it too but it was the fuel cut off on de-cel and was doing it. But mine was more mph than rpm speed. Did it are 40 to 30 on de-cel. I dont think mines a misfie though b/c it does do it everytime and it mostly on de-cel. __________________ Precision Turbo\|TurboSmart\|TeamZ\|Strange\|Hellion\|BBK\|SCT\|Edge Converters\|Fairbanks\|CG Fabrications\|Treadstone Last edited by Scott2001GT; April 21st, 2010 at 06:52 PM.

April 21st, 2010, 12:35 AM	#5
Burrito Regular 2003 Mustang GT Join Date: Oct 2008 Location: tx Posts: 150 iTrader: 1 reviews	had a mechanic look at it and he said there were no vaccum leaks. it doesnt have a rough idle. just those damn joltssss. (pull back and forth) dont know the hell it is. my father had told me that it could be the intake manifold cuz it plastic. but i would thing i would have a ugly idle.

April 21st, 2010, 01:58 AM	#7
Burrito Regular 2003 Mustang GT Join Date: Oct 2008 Location: tx Posts: 150 iTrader: 1 reviews	realllyy crazy ill let u know if i figure it out. little by little im gonnaa replace all the coils. see what happens.

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03 gt

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