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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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Old 08-21-2012, 03:14 AM
Tor Erik Tor Erik is offline
Registered User
Location: Norway
 
Join Date: Aug 2012
Posts: 1
Mein Auto: E36 320 Touring
Bmw 320i stops when i plug in air mass sensor

Hello.

I have some problems with my bmw after engine swap.
I have swapped from M52B20 to M52B25.

The engine works good without the air mass sensor plugged in, but stops when i try to plug it in.

I have tried to change all sensors over from the old engine, but nothing helps.

I have also tried with three different air mass sensors, so i think this is ok.

Now i use the old ecu from my B20 engine, on the B25.
But i also have a M52B25 ecu without ews.

When i use the b20 ecu the engine works good, but with the b25 ecu i only could get it up to 3000rpm before it starts to missfire.

I wondering if it could be a ground fault somewhere, but i`m not sure.

Is there someone here who could help me with some tip maybe?

Sorry about my bad English but i hope something of it would be understanding





Kindly regard Tor Erik
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