Engine Missfire
#1
Engine Missfire
I just joined this site, and i was wonderin if y'all could help me
I just bought my Audi about 4 months ago
It has about 97,000 miles on it.
My audi would missfire every now and then when i got down on the gas hard, it was kinda just a jerk, but it got increasingly worse. It would do it sometimes but other times it wouldnt no matter how much i got down on the gas hard.
Friday night on my way home from work i stopped at a stopsign, and when i took off it felt like i was drivin a jackhammer down the road. It went from just misfiring sometiems to misfiring all of the time, no matter what. Even at an idle my car shakes from the misfire pretty bad. The check engine light flashes the whole time i'm driving. and it smells like im drivin a go kart
I have a cylender one and two misfire
the codes i have are :
P0300 - Random multiple missfire
p0301- Cylender 1 missfire
p0302- Cylender 2 missfire
I've tried to fix it myself but i'm kind of stumped right now...
I changed the sparkplugs thinkin that it might have been the problem, but it didnt fix anything.
So then i did a compression test and it passed just fine.
so from that i've concluded that it wasnt the sparkplugs, a cracked head, a cracked block, or a blown headghasket. Its not a timing problem because if it was all of the cylenders would be missfiring.
I'm thinkin that it may be that the cylender 1 and 2 coils have gone bad, but what are the chances of two of them right beside eachother goin bad at the same time?
still, i'm thinkin its the number 1 and 2 coils, or whatever tells them to fire, or whatever comes before that.
Im decent at workin on cars, but im new to Audi's and european cars in general.
if anyone has any advice at all of if y'all have had this problem before, please repost.
thanks in advance
-Dan!
I just bought my Audi about 4 months ago
It has about 97,000 miles on it.
My audi would missfire every now and then when i got down on the gas hard, it was kinda just a jerk, but it got increasingly worse. It would do it sometimes but other times it wouldnt no matter how much i got down on the gas hard.
Friday night on my way home from work i stopped at a stopsign, and when i took off it felt like i was drivin a jackhammer down the road. It went from just misfiring sometiems to misfiring all of the time, no matter what. Even at an idle my car shakes from the misfire pretty bad. The check engine light flashes the whole time i'm driving. and it smells like im drivin a go kart
I have a cylender one and two misfire
the codes i have are :
P0300 - Random multiple missfire
p0301- Cylender 1 missfire
p0302- Cylender 2 missfire
I've tried to fix it myself but i'm kind of stumped right now...
I changed the sparkplugs thinkin that it might have been the problem, but it didnt fix anything.
So then i did a compression test and it passed just fine.
so from that i've concluded that it wasnt the sparkplugs, a cracked head, a cracked block, or a blown headghasket. Its not a timing problem because if it was all of the cylenders would be missfiring.
I'm thinkin that it may be that the cylender 1 and 2 coils have gone bad, but what are the chances of two of them right beside eachother goin bad at the same time?
still, i'm thinkin its the number 1 and 2 coils, or whatever tells them to fire, or whatever comes before that.
Im decent at workin on cars, but im new to Audi's and european cars in general.
if anyone has any advice at all of if y'all have had this problem before, please repost.
thanks in advance
-Dan!
#2
It would be nice to know what yr/engine you have.... I'm guessing you have a 1.8T.... Swap the coil packs from 1 and 2 to 3 and 4 and see if the misfire follows. If not (and your car is 97-99), replace your ICM/output stage on top of the airbox. You should not be driving your car with the CEL flashing constantly. You'll kill your cat.
Last edited by onepoint8tee; 08-26-2008 at 03:03 PM.
#5
would a problem with my MAF sensor cause a misfire on just two cylenders? and wouldnt i get a code for it?
im not sure what an AEB motor is...
i'd swap the coils and see if the code follows them but i took the insurance off to drive my blazer while my cars broke, so i cant drive the audi to school to use our OBD2 scanner.
any other ideas?
or anything i can try at home? i have decent tools and im a decent mechanic
thanks
-Dan
im not sure what an AEB motor is...
i'd swap the coils and see if the code follows them but i took the insurance off to drive my blazer while my cars broke, so i cant drive the audi to school to use our OBD2 scanner.
any other ideas?
or anything i can try at home? i have decent tools and im a decent mechanic
thanks
-Dan