engine revs after starting????

lovethebmw · 08-26-2007, 06:03 PM

Doesn't happen all the time..seems to be only when I start car first thing in morning (after it sits all night).

starts and within a second..revs up to 2 on the rpms...then back down. (Not a full rev pinning the needle...just a little jolt up to 2).

And no..this is not the car's natural start. It starts and sounds normal then clearly revs after a second or 2 after the idle start.

Anyone else seen this? Is it something to be concerned about?

This is a brand new 328i with 100 miles on it...

THANKS!

Chesmu · 08-26-2007, 06:06 PM

A/C on when you start the car?

lovethebmw · 08-26-2007, 06:13 PM

is that it??

I am an ass.

AndrewAZ · 08-26-2007, 07:32 PM

Either that or its getting cooler out and the engine usually idels high to warm up the CAT's quickly to reduce emissions.

Master Deep · 08-26-2007, 07:40 PM

Quote:

Originally Posted by AndrewAZ

Either that or its getting cooler out and the engine usually idels high to warm up the CAT's quickly to reduce emissions.

Wow did not know that. cool

AndrewAZ · 08-26-2007, 07:45 PM

Quote:

Originally Posted by Master Deep

Wow did not know that. cool

Its not really a cool thing.. My past 2 Mercedes that had this the cats would fail early because of cracking, and part of the reason was the fast warming up when it was ice cold out. But they lasted about 50k miles before it happened. I think my e46 had a cat crack also but I cant recall.

!Xoible · 08-26-2007, 07:49 PM

mine does rev. with or without AC

BK · 08-26-2007, 11:02 PM

FWIW, mine started doing that after upgrading from PROGMAN 21 to 25 -- I noticed it blips the throttle more now when it starts (up to 2K), A/C or not.

08-26-2007, 06:03 PM	#1
lovethebmw Private First Class 16 Rep 107 Posts Drives: looking Join Date: Feb 2007 Location: Midwest iTrader: (0)	engine revs after starting???? Doesn't happen all the time..seems to be only when I start car first thing in morning (after it sits all night). starts and within a second..revs up to 2 on the rpms...then back down. (Not a full rev pinning the needle...just a little jolt up to 2). And no..this is not the car's natural start. It starts and sounds normal then clearly revs after a second or 2 after the idle start. Anyone else seen this? Is it something to be concerned about? This is a brand new 328i with 100 miles on it... THANKS!
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08-26-2007, 06:06 PM	#2
Chesmu Brigadier General 89 Rep 3,011 Posts Drives: 2013 X6 Join Date: Dec 2005 Location: Phoenix,AZ iTrader: (2) Garage List 2006 330i [0.00] 2006 330i [0.00]	A/C on when you start the car? __________________ "Teach the ignorant. Ignore the stupid."
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08-26-2007, 06:13 PM	#3
lovethebmw Private First Class 16 Rep 107 Posts Drives: looking Join Date: Feb 2007 Location: Midwest iTrader: (0)	yes...I think so is that it?? I am an ass.
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08-26-2007, 07:32 PM	#4
AndrewAZ Major 137 Rep 1,243 Posts Drives: 335i Join Date: Jan 2007 Location: CA iTrader: (0)	Either that or its getting cooler out and the engine usually idels high to warm up the CAT's quickly to reduce emissions.
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08-26-2007, 07:49 PM	#7
!Xoible Banned 840 Rep 46,029 Posts Drives: .... Join Date: Nov 2006 Location: . iTrader: (4) Garage List 2008 M3 [4.00] 2007 335i [9.00] 2008 528i [8.00] 2006 Infiniti - G35 ... [8.00]	mine does rev. with or without AC
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08-26-2007, 11:02 PM	#8
BK Smiling politely 165 Rep 7,931 Posts Drives: 330i Join Date: Feb 2006 Location: Washington DC iTrader: (0) Garage List 2006 330i [9.00]	FWIW, mine started doing that after upgrading from PROGMAN 21 to 25 -- I noticed it blips the throttle more now when it starts (up to 2K), A/C or not. __________________ E90 330i Black Sapphire 6MT \| 991.1 C4 Platinum Silver 7MT
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