Have you checked to see if it has carbon build up? It may be time for a good walnut blasting. haw many miles are on it?
And Welcome to MA!
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Also check the battery.
Welcome! -
Zapski-
Battery is brand new, and car stays on when it stalls out the engine just stops.
MCS02-
I had a good walnut blasting about 10,000 miles ago. (I don't know if it would build up that quickly) I just hit 91000 miles which I know is when things start to go wrong and need to be updated. I wouldn't be as frustrated if I could diagnose it and fix what's wrong. -
Minidave Well-Known MemberLifetime Supporter
Perhaps take it to the dealer and let them diagnose it properly with the proprietary software?
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Minidave-
This has been diagnosed by the dealer 3 times with no fix. Also diagnosed by 2 different local euro shops who no longer want anything to do with the car because they cannot find a fix. Everyone has been quick to take my money but no one has fixed my problem. Figured I'd post on here to see if anyone has had a similar problem with similar codes thrown. -
Minidave Well-Known MemberLifetime Supporter
Interesting......and frustrating too!
Sorry, I'm no help, but have you done the basic - run a compression test?
No I don't think that's it either, but it's always where I start. -
wmwny Well-Known Member
Welcome to M/A!
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Minidave-
I have to double check what was done when it was last at the shop. I am not sure if that was done or not. If not I will see what comes of that
Wmwny-
Thanks! -
You have an N18 engine and they do not have the carbon problem the N14 engines have. But I would still check the intake and make sure. I don't know if I missed it in your first post but how many miles does it have on it? I don't think it's the battery but it wouldn't hurt to do a load test on it especially if the battery is more than a few years old.
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MCS02-
Yeah, battery was changed like 2 months ago. So I don't think that's the issue. And I will def check the intake. I've had a couple of walnut blastings throughout the time I've had the car so I know carbon is a big issue. And I just hit about 91000 miles which is of course it's at a big milestone. -
Tigger2011 Member
I'd look at the primary O2 sensor first. Unplugging the MAF sensor forces the ECU to operate in VE mode. Airflow is calculated based on RPM and MAP.