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      02-06-2020, 01:38 PM   #1

Drives: bmw 120i
Join Date: Feb 2020
Location: sweden

iTrader: (0)

bmw 120i 2007 - hesitate on acceleration and high fuel consume


Having a weird and HARD problem with my N43.

I took it from my brother with damage catalytic converter, it was stop in the system from a broken NOx catalytic converter.

Now I have a new CO converter as it was empty when I took the exhuast system down. The NOx converter is empty and I had 1 error code for 6month saying "catalytic converter effect below threshold bank 1 and 2". I bought the CO converter at Ebay....

But now I have been driving about 300-400km without any error.

The problem that make me confuse is that the car drives very bad below 90km/h and the Lambda on driving is really weird. Above 90km/h it drives well and answer on acceleration.

I cannot hit the pedal fast, it will take time before it answer on the acceleration and make small "jump". Really hard to drive in city.

Someone that can help me solve this issue?

Do I need 100% working catalytic converters or is this another problem?

I have Inpa program and can do show you the test result.

Appreciate 0
      02-07-2020, 03:45 AM   #2
1'M Blue

Drives: 1M
Join Date: Nov 2011
Location: OM

iTrader: (0)

Wrong forum freind ... this is the 1M sub forum ..
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