530d fluctuating revs when held at 1200rpm
02-17-2007, 02:03 AM
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When idling, all is fine
I've noticed when I squeeze the gas pedal gentle, picking up the revs to 1200rpm, the revs then start to fluctuate rhythmically between 1100rpm and 1200rpm, about once every couple of seconds. If I squeeze the pedal a bit more (say up to 1400rpm), the problem disappears.
At all other engine speeds, the RPMs are rock steady.
Anyone experienced that?
Please don't tell me I need a new engine
I've noticed when I squeeze the gas pedal gentle, picking up the revs to 1200rpm, the revs then start to fluctuate rhythmically between 1100rpm and 1200rpm, about once every couple of seconds. If I squeeze the pedal a bit more (say up to 1400rpm), the problem disappears.
At all other engine speeds, the RPMs are rock steady.
Anyone experienced that?
Please don't tell me I need a new engine
02-17-2007, 05:07 AM
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Originally Posted by marklp' post='392507' date='Feb 17 2007, 11:03 AM
When idling, all is fine
I've noticed when I squeeze the gas pedal gentle, picking up the revs to 1200rpm, the revs then start to fluctuate rhythmically between 1100rpm and 1200rpm, about once every couple of seconds. If I squeeze the pedal a bit more (say up to 1400rpm), the problem disappears.
At all other engine speeds, the RPMs are rock steady.
Anyone experienced that?
Please don't tell me I need a new engine
I've noticed when I squeeze the gas pedal gentle, picking up the revs to 1200rpm, the revs then start to fluctuate rhythmically between 1100rpm and 1200rpm, about once every couple of seconds. If I squeeze the pedal a bit more (say up to 1400rpm), the problem disappears.
At all other engine speeds, the RPMs are rock steady.
Anyone experienced that?
Please don't tell me I need a new engine
If anything you'll need a new gearbox...
02-17-2007, 05:15 AM
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Originally Posted by colejl' post='392536' date='Feb 17 2007, 09:07 AM
This problem has been reduced by newer software. The 'hunting' problem is connected with the autobox and the torque convertor I believe. It usually happens when going up a small incline?
If anything you'll need a new gearbox...
If anything you'll need a new gearbox...
02-17-2007, 08:01 AM
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My Ride: 09 E90 M3
I get this on my 530i also. Stick it in Neutral, hold the throttle down VERY lightly and try to keep it at ~1000 rpm - it will fluctuate up and down. I believe it has something to do with the electronic throttle/drive-by-wire system. Happened on my previous E46 also.
02-17-2007, 08:07 AM
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My Ride: On Order as of May 6- 2007 530i Titanium Grey and Grey Leather, with Sport Package, Premium Pkg, Cold Pkg.
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Why are you revving up to that speed? 
02-17-2007, 10:51 AM
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Why are you revving up to that speed?
Just wondering if it was the early symptoms of a more general erratic idling problem
02-17-2007, 11:25 AM
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Originally Posted by marklp' post='392538' date='Feb 17 2007, 02:15 PM
No it happens when parked and the 'box is in Park/Neutral. On the move everything seems as normal.
02-17-2007, 04:43 PM
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Originally Posted by marklp' post='392634' date='Feb 17 2007, 02:51 PM
No reason really - I was sat in traffic one day and I was squeezing the throttle for no reason whatsoever
Just wondering if it was the early symptoms of a more general erratic idling problem
Just wondering if it was the early symptoms of a more general erratic idling problem
