Jager561
11-04-2006, 05:09 PM
I originally posted a question about my 323i last week. It has a hestitation upon acceleration between 1,000 to 2,000 RPM's. Once about 2,000 it smooths out. Some readers asked for fuel trim info. I got it today and it follows:
Adaptation, mixture 1, additive 0.08ms
Adaptation, mixture 1, multiplicative -6.7%
<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p>
Adaptation, mixture 2, additive 0.07ms
Adaptation, mixture 2, multiplicative -7.9%
<o:p></o:p>
Bank1 additive (idle speed): 0.08ms
Bank2 additive (idle speed): 0.10ms
<o:p></o:p>
Bank 1multiplicative (partial load): -6.72%
Bank 2multiplicative (partial load): -7.92%
Set point: -7.0 …. 11.0%
Original post is below... any and all help is appreciated! This is driving me crazy.
The car has 62,000 miles on it... new O2 sensor on bank 1 at 45,000 miles
Two dealers could not figure this one out...
My 2000 323i feels like it is misfiring at low RPM (poor acceleration and stumbling sensation), between idle and 1,800 RPM. Sometimes it just gives one or two "bucks" right a 1,800 RPM. The problem is intermitent... but will act up when asked to. The problem does not exist when the engine is cold. The car has been checked for vacuum leaks... none, I have pulled the plugs and they are clean... mass air flow sensor is reported by the dealer to be reading high and near the top of the range... but a new MAF sensor did not cure the problem... the engine light is not coming on and there are no faults store in the ECM... the dealers suggest I wait until a check engine light comes on... but I want the car to run well in the mean time... it has been 4 months already... and I don't feel like getting stranded somewhere.
Adaptation, mixture 1, additive 0.08ms
Adaptation, mixture 1, multiplicative -6.7%
<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p>
Adaptation, mixture 2, additive 0.07ms
Adaptation, mixture 2, multiplicative -7.9%
<o:p></o:p>
Bank1 additive (idle speed): 0.08ms
Bank2 additive (idle speed): 0.10ms
<o:p></o:p>
Bank 1multiplicative (partial load): -6.72%
Bank 2multiplicative (partial load): -7.92%
Set point: -7.0 …. 11.0%
Original post is below... any and all help is appreciated! This is driving me crazy.
The car has 62,000 miles on it... new O2 sensor on bank 1 at 45,000 miles
Two dealers could not figure this one out...
My 2000 323i feels like it is misfiring at low RPM (poor acceleration and stumbling sensation), between idle and 1,800 RPM. Sometimes it just gives one or two "bucks" right a 1,800 RPM. The problem is intermitent... but will act up when asked to. The problem does not exist when the engine is cold. The car has been checked for vacuum leaks... none, I have pulled the plugs and they are clean... mass air flow sensor is reported by the dealer to be reading high and near the top of the range... but a new MAF sensor did not cure the problem... the engine light is not coming on and there are no faults store in the ECM... the dealers suggest I wait until a check engine light comes on... but I want the car to run well in the mean time... it has been 4 months already... and I don't feel like getting stranded somewhere.