Dropping revs?????

E46ACS · 12-01-2009, 11:10 PM

Am having a strange problem.......

Traveling along at 80ish, cruising along, if I ease off the accelarater the revs drop quickly to around 1000rpm. When I press the accelrater, or change down a gear, the revs pick up to where they should be. This isn't just a dashboard issue or rev needle problem, as I can hear/feel the engine pick up revs, so it looks like the engine revs are dropping. The speed does start to drop slightly.

The revs don't drop instantly, but take a few seconds to drop, and doesn't happen every time I try, but probably 3 out 5 times.

There doesn't seem to be any issues elsewhere, or any impact on performance.

Any ideas?

**Mark CSL** · 12-01-2009, 11:26 PM

It could be the throttle sensor not working right

Best bet take it in to bmw and have them check it

**DazBlackCSL** · 12-01-2009, 11:35 PM

Yeah thats not right at all , get it checked asap to be on the safe side

E46ACS · 13-01-2009, 12:04 AM

Hmmmmm........ Knew it would end in a trip to the stealers......

**glendog74** · 01-02-2009, 12:45 AM

Did you sort this in the end mate?

E46ACS · 01-02-2009, 01:35 PM

No, car is going in for an Insp II soon, so i am just complying a list for rhem to do.

12-01-2009, 11:10 PM	#1
E46ACS S5, Sport Off, DSC M-track Join Date: Oct 2008 Location: Durham Posts: 771 Casino cash: $1950	Dropping revs????? Am having a strange problem....... Traveling along at 80ish, cruising along, if I ease off the accelarater the revs drop quickly to around 1000rpm. When I press the accelrater, or change down a gear, the revs pick up to where they should be. This isn't just a dashboard issue or rev needle problem, as I can hear/feel the engine pick up revs, so it looks like the engine revs are dropping. The speed does start to drop slightly. The revs don't drop instantly, but take a few seconds to drop, and doesn't happen every time I try, but probably 3 out 5 times. There doesn't seem to be any issues elsewhere, or any impact on performance. Any ideas? __________________ "Brake.....brake......SUPER BRAKE!!!"

12-01-2009, 11:35 PM	#3
DazBlackCSL CSL Register Uber-poster! Join Date: Apr 2008 Location: Shaboogling Posts: 7,199 Casino cash: $28478	Yeah thats not right at all , get it checked asap to be on the safe side __________________ CSL Register Lifestyle Coach and Social Secretary

13-01-2009, 12:04 AM	#4
E46ACS S5, Sport Off, DSC M-track Join Date: Oct 2008 Location: Durham Posts: 771 Casino cash: $1950	Hmmmmm........ Knew it would end in a trip to the stealers...... __________________ "Brake.....brake......SUPER BRAKE!!!"

01-02-2009, 01:35 PM	#6
E46ACS S5, Sport Off, DSC M-track Join Date: Oct 2008 Location: Durham Posts: 771 Casino cash: $1950	No, car is going in for an Insp II soon, so i am just complying a list for rhem to do. __________________ "Brake.....brake......SUPER BRAKE!!!"

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12-01-2009, 11:26 PM	#2
Mark CSL CSL Register Uber-poster! Join Date: Sep 2007 Location: Scotland Posts: 8,777 Casino cash: $42229	It could be the throttle sensor not working right Best bet take it in to bmw and have them check it

01-02-2009, 12:45 AM	#5
glendog74 CSL Register Uber-poster! Tetris Champion! Join Date: Apr 2008 Location: Cornwall Posts: 8,861 Casino cash: $32299	Did you sort this in the end mate?