misfire

riddlee josh · January 18th, 2008, 11:49 AM

hey remember i told you guys my car was idleing bad? well i tested it today with my obd2 tester and it read that it has random multiple misfires. i kinda know what this means but how do i fix it and what caused it?

riddlee josh · January 18th, 2008, 12:07 PM

please reply

Juggalo_X · January 18th, 2008, 12:08 PM

Check plugs wires and coil pack.

Juggalo_X · January 18th, 2008, 12:09 PM

Also check your freeze frame data and see if it specifies what CYL misfired last. start with that one and take a look at the wire and plug.

riddlee josh · January 18th, 2008, 12:23 PM

what is freeze frame data? and how do i get it?

riddlee josh · January 18th, 2008, 12:44 PM

any help at all?

Juggalo_X · January 18th, 2008, 12:49 PM

Most OBD2 tools support a freeze frame. unless its a cracker jack box scan tool. mine i can scan and then interface with my pc and it tells me when all the codes took place, engine temp, rpm speed all the good stuff.

riddlee josh · January 18th, 2008, 12:59 PM

well mines cheap so i guess i can't check that. im thinking that i need to get new wires and plugs for it. but i don't know that it would help any

94v6blkndred · January 18th, 2008, 01:06 PM

check your computer...mine fried to where it was telling my number 6 injector to constantly stay open so i was missfiring bad..just throwin that out there

riddlee josh · January 18th, 2008, 01:09 PM

um ok. how do i go about checking it?

94v6blkndred · January 18th, 2008, 01:11 PM

i took mine to a mechanic..thats all i could do..the whole time i thought i had a bad wire or injector..thats what everyone on here thought too and idk how they go about checkin the computer..

riddlee josh · January 18th, 2008, 01:12 PM

oh well im def going to try and hope that mine is a wire but if all else fails i will def go have that checked. and did you have to get a whole new computer? and how much did it cost?

94v6blkndred · January 18th, 2008, 01:16 PM

yea i had to get a new computer...but..i have OBD1 so it was kinda hard to find one....all and all i paid like 300 bucks for a new computer and labor..

riddlee josh · January 18th, 2008, 03:16 PM

will it hurt the car to drive it this way?

Juggalo_X · January 18th, 2008, 03:17 PM

Originally Posted by riddlee josh

will it hurt the car to drive it this way?

yah

CNASHGO · January 18th, 2008, 03:34 PM

my f150 was misfiring last summer and i had a tune-up performed. it runs fine now. you may have to do the same

itschristorres8 · January 18th, 2008, 05:33 PM

Originally Posted by 94v6blkndred

check your computer...mine fried to where it was telling my number 6 injector to constantly stay open so i was missfiring bad..just throwin that out there

mechanic played you
i doubt you computer was bad let alone FRIED you'd know if your computer was friend
it wouldnt run
not just say oh your #6 injector is open...thats just a bad injector
easy like $30-50 40minute job

most likely if your having RANDOM missfires in each cylinder your coil is bad
check your wires with a spark tester that you can buy at any auto store

itschristorres8 · January 18th, 2008, 05:35 PM

Originally Posted by 94v6blkndred

i took mine to a mechanic..thats all i could do..the whole time i thought i had a bad wire or injector..thats what everyone on here thought too and idk how they go about checkin the computer..

NO mechanic will ever crack open the computer and check out whats wrong if ALLLL i mean ALL else fails they'll assume and know it has to be the computer

i bet you have 1 new or used injector depending how much of a dick the mechanic is and thats it

Juggalo_X · January 18th, 2008, 06:24 PM

Originally Posted by itschristorres8

mechanic played you
i doubt you computer was bad let alone FRIED you'd know if your computer was friend
it wouldnt run
not just say oh your #6 injector is open...thats just a bad injector
easy like $30-50 40minute job

most likely if your having RANDOM missfires in each cylinder your coil is bad
check your wires with a spark tester that you can buy at any auto store

+1 its called a leaking injector. they are common on poorly maintained vehicles.

94v6blkndred · January 18th, 2008, 11:13 PM

honestky idc aslong as my car got fixed...had a trip to go on in two days so i said whatever...we cleared it with a scanner and it was fine momentarally then acted up again..

January 18th, 2008, 11:49 AM	#1
riddlee josh Regular 1998 mustang 3.8l v6 Join Date: Nov 2007 Location: portsmouth ohio Posts: 455	misfire hey remember i told you guys my car was idleing bad? well i tested it today with my obd2 tester and it read that it has random multiple misfires. i kinda know what this means but how do i fix it and what caused it? __________________ 1998 mustang v6,UD pulleys,msd 8.5 mm wires shorty headers no cats H pipe flowmaster knock offs cold air intake w/ k n filter headlights mirrors 2 10 xplod subs 1000 watt amp really wanting/needing a split port swap. hopefully in the near future

January 18th, 2008, 12:07 PM	#2
riddlee josh Regular 1998 mustang 3.8l v6 Join Date: Nov 2007 Location: portsmouth ohio Posts: 455	please reply __________________ 1998 mustang v6,UD pulleys,msd 8.5 mm wires shorty headers no cats H pipe flowmaster knock offs cold air intake w/ k n filter headlights mirrors 2 10 xplod subs 1000 watt amp really wanting/needing a split port swap. hopefully in the near future

January 18th, 2008, 12:23 PM	#5
riddlee josh Regular 1998 mustang 3.8l v6 Join Date: Nov 2007 Location: portsmouth ohio Posts: 455	what is freeze frame data? and how do i get it? __________________ 1998 mustang v6,UD pulleys,msd 8.5 mm wires shorty headers no cats H pipe flowmaster knock offs cold air intake w/ k n filter headlights mirrors 2 10 xplod subs 1000 watt amp really wanting/needing a split port swap. hopefully in the near future

January 18th, 2008, 12:59 PM	#8
riddlee josh Regular 1998 mustang 3.8l v6 Join Date: Nov 2007 Location: portsmouth ohio Posts: 455	well mines cheap so i guess i can't check that. im thinking that i need to get new wires and plugs for it. but i don't know that it would help any __________________ 1998 mustang v6,UD pulleys,msd 8.5 mm wires shorty headers no cats H pipe flowmaster knock offs cold air intake w/ k n filter headlights mirrors 2 10 xplod subs 1000 watt amp really wanting/needing a split port swap. hopefully in the near future

January 18th, 2008, 01:09 PM	#10
riddlee josh Regular 1998 mustang 3.8l v6 Join Date: Nov 2007 Location: portsmouth ohio Posts: 455	um ok. how do i go about checking it? __________________ 1998 mustang v6,UD pulleys,msd 8.5 mm wires shorty headers no cats H pipe flowmaster knock offs cold air intake w/ k n filter headlights mirrors 2 10 xplod subs 1000 watt amp really wanting/needing a split port swap. hopefully in the near future

January 18th, 2008, 12:44 PM	#6
riddlee josh Regular 1998 mustang 3.8l v6 Join Date: Nov 2007 Location: portsmouth ohio Posts: 455	any help at all? __________________ 1998 mustang v6,UD pulleys,msd 8.5 mm wires shorty headers no cats H pipe flowmaster knock offs cold air intake w/ k n filter headlights mirrors 2 10 xplod subs 1000 watt amp really wanting/needing a split port swap. hopefully in the near future

January 18th, 2008, 01:06 PM	#9
94v6blkndred Enthusiast 1994 Mustang v6 slower than your average snail Join Date: Mar 2007 Location: Houston, TX Posts: 866	check your computer...mine fried to where it was telling my number 6 injector to constantly stay open so i was missfiring bad..just throwin that out there

January 18th, 2008, 01:11 PM	#11
94v6blkndred Enthusiast 1994 Mustang v6 slower than your average snail Join Date: Mar 2007 Location: Houston, TX Posts: 866	i took mine to a mechanic..thats all i could do..the whole time i thought i had a bad wire or injector..thats what everyone on here thought too and idk how they go about checkin the computer..

January 18th, 2008, 01:12 PM	#12
riddlee josh Regular 1998 mustang 3.8l v6 Join Date: Nov 2007 Location: portsmouth ohio Posts: 455	oh well im def going to try and hope that mine is a wire but if all else fails i will def go have that checked. and did you have to get a whole new computer? and how much did it cost? __________________ 1998 mustang v6,UD pulleys,msd 8.5 mm wires shorty headers no cats H pipe flowmaster knock offs cold air intake w/ k n filter headlights mirrors 2 10 xplod subs 1000 watt amp really wanting/needing a split port swap. hopefully in the near future

January 18th, 2008, 01:16 PM	#13
94v6blkndred Enthusiast 1994 Mustang v6 slower than your average snail Join Date: Mar 2007 Location: Houston, TX Posts: 866	yea i had to get a new computer...but..i have OBD1 so it was kinda hard to find one....all and all i paid like 300 bucks for a new computer and labor..

January 18th, 2008, 03:16 PM	#14
riddlee josh Regular 1998 mustang 3.8l v6 Join Date: Nov 2007 Location: portsmouth ohio Posts: 455	will it hurt the car to drive it this way? __________________ 1998 mustang v6,UD pulleys,msd 8.5 mm wires shorty headers no cats H pipe flowmaster knock offs cold air intake w/ k n filter headlights mirrors 2 10 xplod subs 1000 watt amp really wanting/needing a split port swap. hopefully in the near future

January 18th, 2008, 03:34 PM	#16
CNASHGO Regular 2002 Ford Mustang V6 Join Date: Mar 2007 Location: Montana Posts: 110	my f150 was misfiring last summer and i had a tune-up performed. it runs fine now. you may have to do the same __________________ 2002 Zinc Yellow Ford Mustang-BBK CAI, ASP underdrive pulleys, custom dual exhaust, graphics express graphics, Pioneer AVIC D-3, 2-10" pioneers, Rockford fosgate amp Selling '97 F150 to save up for a Mach 1.

January 18th, 2008, 11:13 PM	#20
94v6blkndred Enthusiast 1994 Mustang v6 slower than your average snail Join Date: Mar 2007 Location: Houston, TX Posts: 866	honestky idc aslong as my car got fixed...had a trip to go on in two days so i said whatever...we cleared it with a scanner and it was fine momentarally then acted up again..

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