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My e39 has codes p1188,p1189, p0130,p0150,p0170,p0173 and multiple misfires detected. Its been running rough for awhile now and I replaced both upstream 02’s with bosch and the problem improved. Just tonight it was wanting to die at idle and really had a hard time even accelerating past 2k almost like it was in limp mode and the engine was shaking really bad. Can anyone fill me in on some common problems so I know where to start? Im just at a loss with this car right now, its been one thing after another. Any advice welcome, I'm new to the Bimmer life.
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Originally Posted by Thekuhlman
I am not looking up those codes. But P codes are a little too generic…you should really get a good quality scanner that reads bmw-specific codes.
is the car in trans failsafe mode ? One of the codes will say so if it is..
If you see a trans fail safe code, you MAY have a problem with the throttle body connector on your ‘99…it’s a unique issue to ‘99 and ‘00 cars. Search on M52TU and MDK or throttle body connector.
have you checked for vacuum leaks? That’s a big source of mis-fires.
we need more detail.
Last edited by effduration; 02-04-2023 at 07:18 AM.
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You need to work on your diagnostic skills. To just come to an internet forum and say"tell me what to do" is lazy. Do your homework. Look up those codes and find the common denominator. Don't just start throwing parts at the car. This is expensive and a waste of time. And I agree with Eff, get the car scanned properly and go from there.
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