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General E46 Forum
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Old 08-29-2012, 11:56 AM   #1
FMANALOPR
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bad offset

I have an intermitent "limp mod" action. Mostly when its rainy. But I wonder if having a set of wheels with a bad offset (stiking out a bit) could affect this cause it happens randomly whe its also dry. Anyone?
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Old 08-29-2012, 12:16 PM   #2
white46
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No, limp mod has nothing to do with offset. Having said that, is there any CEL?
Possibly the speed sensor gone bad.
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Old 09-25-2012, 01:11 PM   #3
FMANALOPR
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One thing I did notice is that if I disconnect the MAF plug it runs perfect. Could that be the cause?

Sent from my EVO using Bimmer App
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Old 09-25-2012, 01:13 PM   #4
lsteg
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Quote:
Originally Posted by FMANALOPR View Post
One thing I did notice is that if I disconnect the MAF plug it runs perfect. Could that be the cause?

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Sounds like you need your codes read.
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Old 09-25-2012, 02:12 PM   #5
jdstrickland
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Quote:
Originally Posted by FMANALOPR View Post
I have an intermitent "limp mod" action. Mostly when its rainy. But I wonder if having a set of wheels with a bad offset (stiking out a bit) could affect this cause it happens randomly whe its also dry. Anyone?
Is it Limp Mod (sic) or is the Traction Control kicking in?

Offset would not be a contributor -- other than the wider tires might hydroplane and the traction control would see this and shut it down, making it feel like the car is going to limp mode.

Another thing to consider is if the tires are too different (front to rear) in size, and the car is always on the verge of activating the traction control, and when it is wet out, the minimal slipping of the rear tires is enough to kick the system into action.

Traction Control detects the rear tires slipping -- going faster -- than the front tires, and the result is that power will be reduced and the brakes applied as the traction control tries to get all four tires going at the same speed. You would feel this as Limp Mode, but a real limp mode should cause the transmission malfunction light to be on (the light that looks like a gear), whereas the traction control light would flash when the system was doing what it is supposed to do, even if you think it should not be doing it at the time.

The question to asnwer is, is the car doing its job properly but at what you think is the wrong time, or is the car doing something wrong?
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Old 09-25-2012, 02:13 PM   #6
jdstrickland
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What size tires are you using, front and rear? I assume they are the same from left to right, but if not then this can also be a problem.
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