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#1
11-09-2016, 07:26 PM
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N62 owners, steady idle?
It is always smooth. Every minute or so, I get a stumble. It's not enough to see on the tachometer, yet you can hear it. It has done this since I have owned it. I have no codes, very good gas mileage, great power. I only get the stumble at idle, don't see or feel it at cruise RPM. Any ideas where to start looking?
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2003 4.6is X5 2003 525it 2003 E53 X5 Standard shift 
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#2
11-09-2016, 08:41 PM
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Quote:
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#3
11-09-2016, 10:45 PM
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Good day!
I'd venture to think it's a draw on the motor of some kind... A/C compressor kicking on, or even an electrical load making the Alt work harder... something very subtle but constant... I suspect a failing component would throw a code if it happened every minute or so... Just my two cents... Cheers!
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2001 E53 X5 4.4i (03-07-2001 build date) White exterior / hellbeige interior (6MT swap vehicle - Manny) 2002 E53 X5 4.6is (12-20-2001 build date) Imola Red exterior / M-texture interior (Red) 2003 E53 X5 4.4i (06-26-2003 build date) Silver exterior / Black interior (Silvester II) 2008 Mini Cooper S ragtop (04-17-2008 build date) Dark Silver exterior / Gray interior ( Topless) BMWCCA member (#4745)
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#5
11-10-2016, 04:50 AM
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I'll take a look at mine a little closer when I get home... And I was just thinking how incredibly steady the motor seemed while running compared to my 540i... maybe it's there in mine as well, but I just never noticed...
Hmmmmmmm!
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2001 E53 X5 4.4i (03-07-2001 build date) White exterior / hellbeige interior (6MT swap vehicle - Manny) 2002 E53 X5 4.6is (12-20-2001 build date) Imola Red exterior / M-texture interior (Red) 2003 E53 X5 4.4i (06-26-2003 build date) Silver exterior / Black interior (Silvester II) 2008 Mini Cooper S ragtop (04-17-2008 build date) Dark Silver exterior / Gray interior ( Topless) BMWCCA member (#4745)
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#6
11-10-2016, 08:28 AM
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Quote:
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#8
11-10-2016, 10:44 AM
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IVM is Integrated Voltage Module... Simplified just a bunch of relays and fuses: IVM or why my engine runs sluggish??? N62 applies to ALL cars with it. E53/e65/e60/e63/e64/e66 | BMW LOGIC7
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#9
11-10-2016, 11:21 AM
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You could have a misfire, but every time you shut the engine down, the misfire counters for all the cylinders reset. You need to get a scanner that can provide live data and has a misfire counter for the cylinders. Perhaps the misfire counter never reaches the limit that it will throw a code since you say that the misfire is only at idle.
In order to solve the problem, you need to identify the problem. You don't even know which cylinder is stumbling or misfiring.
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2006 Infiniti G35 2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD Lotus Europa 1970 Destroyed by fire Lotus Europa 1970 S2 Renault Powered Lotus Type 52 1970 Twincam Webers Powered PORSCHE 911 Targa 1982 The Garage Queen Audi Avant donated to Kars for Kids BMW 525IT Sold Audi 4000CS Quattro Sold Jensen Healey Lotus Powered Sold Opel 1900 Sold Triumph Spitfire 1971 Sold Triumph Spitfire 1968 Sold Plymouth "Cuda" 340 Six pack SOLD
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