[nelnelxd]

I lost engine power the other day. I get the check engine light in yellow. It does go away after i turn off the car and turn it back on. This wasn't the first time it happened. It happen once last month and once maybe a year ago. I was wondering if it is getting serious and if this is the "limp mode" i keep hearing you guys talk about. The thing is i drive a 328i and i thought this was because of the turbos on the 335. Any suggestions? I am just out of warranty btw.

[chiaobaby]

had this when my low pressure fuel sensor was going bad.

[mid-corner fun]

Originally Posted by nelnelxd

I lost engine power the other day. I get the check engine light in yellow. It does go away after i turn off the car and turn it back on. This wasn't the first time it happened. It happen once last month and once maybe a year ago. I was wondering if it is getting serious and if this is the "limp mode" i keep hearing you guys talk about. The thing is i drive a 328i and i thought this was because of the turbos on the 335. Any suggestions? I am just out of warranty btw.

find a shop/friend/forum member that can pull the codes from your car.
Limp modes can happen to all cars for several reasons.

[Alpine Whiteboy]

Because racecar...

[E31BMW]

yea, it can really be from anything. HPFP, Vanos, etc. I found that when my limp mode was intermittent; i would just come on during hard acceleration and go away after restart, it turned out to be my Vanos.

[nelnelxd]

Originally Posted by Genek335

yea, it can really be from anything. HPFP, Vanos, etc. I found that when my limp mode was intermittent; i would just come on during hard acceleration and go away after restart, it turned out to be my Vanos.

Yeah this may be what happened here. I live right off a highway and to merge I do some hard acceleration. Its probably doesn't help that the car isn't really warmed up all that much either.

[Tommy-G]

I was out with my friend (S/A @ Open Road) this weekend and it went limp...my 335, that is! He took her in Monday and found it was the VANOS

535 loaner isn't bad but my car is missed dearly

[E31BMW]

Originally Posted by nelnelxd

Yeah this may be what happened here. I live right off a highway and to merge I do some hard acceleration. Its probably doesn't help that the car isn't really warmed up all that much either.

yea, BMW ,in the manual, has said it is better to drive the car without conventionally warming it up, but staying at a low rpm for a while until it heats up.

[nelnelxd]

so i went to auto zone for code reading and was told it was my spark plug in cylinder 4. does this mean it needs,to be replaced i mean the check engine isnt even on anymore.

[sA x sKy]

Originally Posted by nelnelxd

so i went to auto zone for code reading and was told it was my spark plug in cylinder 4. does this mean it needs,to be replaced i mean the check engine isnt even on anymore.

Depending on mileage, I would just replace all of them. They aren't that much anyway.

[hemi to e90]

Originally Posted by Tommy g

I was out with my friend (S/A @ Open Road) this weekend and it went limp...my 335, that is! He took her in Monday and found it was the VANOS

535 loaner isn't bad but my car is missed dearly

u got a 535i loaner? wtf? i always get 328xi's. all i want out of a loaner is navi......

[Tommy-G]

Originally Posted by hemi to e90

u got a 535i loaner? wtf? i always get 328xi's. all i want out of a loaner is navi......

I have connections

[nelnelxd]

Originally Posted by PeterM1

find a shop/friend/forum member that can pull the codes from your car.
Limp modes can happen to all cars for several reasons.

scans at auto zone said it was a misfire in cylinder 4. The check engine only appeared after i felt engine cut power. I turned it it off/ back on and its gone. Since it shows in my scans does this mean I am still misfiring right now or is it just when it cut power to my engine? If I change the spark plug and that was the problem will it no longer appear in the scans?

[mid-corner fun]

it will indefinitely stay there until it's cleared via a BT/GT1 or other tool. Wherever you go to have your plugs replaced, ask them to clear your codes too.

[nelnelxd]

Originally Posted by PeterM1

it will indefinitely stay there until it's cleared via a BT/GT1 or other tool. Wherever you go to have your plugs replaced, ask them to clear your codes too.

Well I was planning to do it myself. DIY didn't seem to bad. If autozone used a BT/GT1 or other tool to read the codes they can also clear is as well right? Or is it only specific ones that can do so? Also if my car is still misfiring would my check engine light remain on because its not even on anymore.

[AddictedToBavarian]

Mine went limp once.... but that's because I drank way too much that night.

[mid-corner fun]

Originally Posted by nelnelxd

Well I was planning to do it myself. DIY didn't seem to bad. If autozone used a BT/GT1 or other tool to read the codes they can also clear is as well right? Or is it only specific ones that can do so? Also if my car is still misfiring would my check engine light remain on because its not even on anymore.

Not sure if autozone's policy is to read only or read and clear, ask them. If that doesn't work offer someone with a BT cable a beer and they'll do it on the spot :-)

[nelnelxd]

thanks i just ordered a cheap,code reader on amazon just in case and for future use. gonna try the diy when i get it.

[BoogeyMan'sBMW]

i had a similar problem with my 330i right before a misfire how many miles on the odo?

i had my spark plugs changed and its been fine since *knock on wood*

[nelnelxd]

54000 on mine

[nelnelxd]

I just changed my spark plus with ngk but now the car has some random shaking when I am at a standstill. Anyone know what I did wrong?

[nelnelxd]

I used ngk LRF6AIX-11 plugs and torqued to 17 lbs