08-21-2012, 04:14 AM
Join Date: Aug 2012
Mein Auto: E36 320 Touring
Bmw 320i stops when i plug in air mass sensor
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