[Tim603]

So after driving my car for about 30 mins today I got home and sat in the driveway for about 10 minutes idling, the half engine symbol came on and my engine made a couple weird rpm changes, I immediately shut the engine off. After testing this again it did it again. Any idea what this may be?

[sjf430]

Most likely coil/plugs, best to get the code read

[Tim603]

Originally Posted by sjf430

Most likely coil/plugs, best to get the code read

Weirdest part.... No codes

[Tim603]

Anyone? I'll try and take a video of it happening when I get a chance. Also gonna clean my maf that may help

[benzo23]

I would highly suggest not running a nitrous setup now if youre getting a half engine symbol lol, that is really strange no codes. Any light on the dash will throw something.

[Tim603]

Originally Posted by benzo23

I would highly suggest not running a nitrous setup now if youre getting a half engine symbol lol, that is really strange no codes. Any light on the dash will throw something.

hahah yeah obviously want to get this figured out first lol but yea very strange, i think it may have something to do with my tune, it only started doing it when i applied the flash tune. Im in contact with them to see if they have any ideas.

Literally the car runs great otherwise, no issues what so ever. Think it could be something simple like a dirty maf?

[Tim603]

Well, I just took a 15 minute video to try to catch it and of course it doesnt do it. So maybe it just worked itself out??? Idk i will keep you guys posted, hopefully it doesnt do it again

[XstheticMotorsports]

Sounds like you need new coils or spark plugs. I had customers experienced the same issue after flash tune. How many miles you have on the car?

[e90pilot]

You're getting a limp home mode but not faults? Makes no sense. Limp home is a fault and there should be a log of it in the ECU as well as why it was triggered. What scan tool are you using?

[Tim603]

Originally Posted by XstheticMotorsports

Sounds like you need new coils or spark plugs. I had customers experienced the same issue after flash tune. How many miles you have on the car?

okay that may be it then, my car has 138k on it and I did plugs at 100k. I have yet to replace the coils and I bought the car with 74k. If it happens again I think I may just buy six new coils. Did you customers not get a code though?

Originally Posted by e90pilot

You're getting a limp home mode but not faults? Makes no sense. Limp home is a fault and there should be a log of it in the ECU as well as why it was triggered. What scan tool are you using?

I know that whats so strange to me. Im using an actron, heres a link below.

https://www.google.com/shopping/prod...d=0CK0BEKYrMAY

[sirantsE90]

Mine has done it atleast 6 times now. It's a known problem with the valvetronic motor. Tech called it a hiccup...? There is a bulletin about it and bmw has to send out a tech to do the job since most tech are not qualified. I will try and find it and post here. I just try to not let it idle that long anymore. Car always functions perfect after a restart and no codes either.

[Tim603]

Originally Posted by sirantsE90

Mine has done it atleast 6 times now. It's a known problem with the valvetronic motor. Tech called it a hiccup...? There is a bulletin about it and bmw has to send out a tech to do the job since most tech are not qualified. I will try and find it and post here. I just try to not let it idle that long anymore. Car always functions perfect after a restart and no codes either.

No kidding that's crazy, yeah I mean I tested it the other day and let it idle for 20 mins on cold start with no problems and 15 minutes after driving it for a bit with no problems. Not sure if it worked it self out or not, I'm curious to see what this bulletin says about it. Glad to see I'm not the only one. How many miles you have on urs?

[sirantsE90]

Originally Posted by Tim603

No kidding that's crazy, yeah I mean I tested it the other day and let it idle for 20 mins on cold start with no problems and 15 minutes after driving it for a bit with no problems. Not sure if it worked it self out or not, I'm curious to see what this bulletin says about it. Glad to see I'm not the only one. How many miles you have on urs?

I reached out to the service manager at my old dealer to send it to me. I could not find the one I had. I have 114,xxx now. I bought it new August 08 and the first time it happened it had maybe 15k on it.

I'll try and get it from him this week if he doesn't send it tomorrow

[uncle ben]

My car has done this to me before. But only on rare very cold days (-30 Celsius), and my mechanic told me that it was my throttle freezing and sticking. He clears the codes and all is well. Probably happened 3 times to me over the past 3-4 years of owning the car.

[Tim603]

Okay cool thanks man appreciate it

[Tim603]

Originally Posted by uncle ben

My car has done this to me before. But only on rare very cold days (-30 Celsius), and my mechanic told me that it was my throttle freezing and sticking. He clears the codes and all is well. Probably happened 3 times to me over the past 3-4 years of owning the car.

But your car did throw codes right? The thing were talking about doesn't throw any codes at all, that's why it's so strange

[Tim603]

Originally Posted by sirantsE90

I reached out to the service manager at my old dealer to send it to me. I could not find the one I had. I have 114,xxx now. I bought it new August 08 and the first time it happened it had maybe 15k on it.

I'll try and get it from him this week if he doesn't send it tomorrow

So it happened again yesterday, any word on that article?

[Tim603]

Originally Posted by sirantsE90

Mine has done it atleast 6 times now. It's a known problem with the valvetronic motor. Tech called it a hiccup...? There is a bulletin about it and bmw has to send out a tech to do the job since most tech are not qualified. I will try and find it and post here. I just try to not let it idle that long anymore. Car always functions perfect after a restart and no codes either.

Any word on that bulletin?

[sirantsE90]

Tim, completely forgot about this, works been nuts. Ill call them up right now and see if they can send it over.

[sirantsE90]

Tim, i was able to get the bulletin. I am picking it up later and will scan it and post here either this weekend or monday morn.

Sorry for the long wait

[Tim603]

Originally Posted by sirantsE90

Tim, i was able to get the bulletin. I am picking it up later and will scan it and post here either this weekend or monday morn.

Sorry for the long wait

No prob man, look forward to seeing it. Id like to get this fixed....assuming it doesnt cost an arm and a leg since im out of warranty

[sirantsE90]

Originally Posted by Tim603

No prob man, look forward to seeing it. Id like to get this fixed....assuming it doesnt cost an arm and a leg since im out of warranty

Hey Tim,

This might be the right one but its been a long time since i read the original I have been referring to. We may be experiencing loss of oil pressure after long idle time.

Hope this helps.







**bulletin above is copyright of BMW North America**