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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E36 (1991 - 1999)

E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

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  #1  
Old 12-03-2012, 05:23 PM
chase62002 chase62002 is offline
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E36 after replacing the maf Transmission light on transmission shifts hard

1997 328i had a poor idle and a hesitation on take off, I replaced the maf and the idle problem is gone but the Transmission warning light is on and the trans shifts hard with poor performance. Any ideals.
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  #2  
Old 12-03-2012, 05:33 PM
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Auto or manual?
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Old 12-03-2012, 05:38 PM
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Gotta be an auto since manual cars don't have transmission warning lights. Changing the MAF shouldn't have affected the transmission, so I'd take it to a shop and have your TCU scanned.
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  #4  
Old 12-03-2012, 05:50 PM
chase62002 chase62002 is offline
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With the old maf installed the trans warning is off. It's only on with the new one.
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  #5  
Old 12-03-2012, 06:01 PM
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That makes less sense than not naming your kids Randy.
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Originally Posted by hnaz View Post
I grew up in a time when the internet was just a baby. Grammar back then versus now... holy cow. You could watch the degradation of society as the internet became more mature.

HAS KEN HAD HIS MEDS YET?
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  #6  
Old 12-04-2012, 01:22 PM
chase62002 chase62002 is offline
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I think I've read somewhere that you need to have the ecu adaptation when installing a new maf, is this right?
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  #7  
Old 12-04-2012, 02:23 PM
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ZeGerman ZeGerman is online now
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No, I've never heard that, and people replace their MAFs all the time without doing anything with the ECU. This is a total mystery to me.
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1998 BMW 328is
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  #8  
Old 12-04-2012, 06:30 PM
chase62002 chase62002 is offline
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With the old maf installed the car does not want to rev up when it does it very slow. With the the maf unplugged the idle is better and the car revs up great but the trans light comes on and also the I same with the new maf.
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Old 12-04-2012, 06:35 PM
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Did you get oem? I heard ebays arent good for it.

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Old 12-04-2012, 06:45 PM
chase62002 chase62002 is offline
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It's was from eBay.
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  #11  
Old 12-04-2012, 06:48 PM
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Thats probably it.
Check for rips on the boot. I had the same problem.

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Old 12-04-2012, 09:32 PM
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Quote:
Originally Posted by chase62002 View Post
I think I've read somewhere that you need to have the ecu adaptation when installing a new maf, is this right?
It's sort of right. When you upgrade your 3" MAF to a 3.5" Porsche or 540i MAF you need to reflash your DME to get the most out of it (when it's combined with other upgrades/mods). But never to simply switch out your 3" MAF for another 3" MAF.
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I grew up in a time when the internet was just a baby. Grammar back then versus now... holy cow. You could watch the degradation of society as the internet became more mature.

HAS KEN HAD HIS MEDS YET?
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