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#1
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Engine runs rough when cold
I know it's vague and not much information for you but if you have any thoughts that would be great?
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2004 E53 4.4L N62 |
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#2
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When the X is first started in the morning, the 02 sensor doesn't control the idle because the system is not in closed loop. It uses preset parameters for the idle.
I would look into the idle control valve ICV.
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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 Last edited by upallnight; 10-21-2014 at 09:55 AM. |
#3
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My N62 does that once in a while also on cold mornings... I don't worry about it!
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2006 X5 48is Black / Black - LED AEs - FCAB - GAS 1.2bar cap |
#4
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Intermediate levers, normal for N62
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2018 Ram 2500 6.7L Cummins 68RFE 19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed 2013 X5 35D (CEO's) - Born on 5/17/2013 - 82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards |
#5
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Not really.... i know mine is valve stem seals
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2006 X5 48is Black / Black - LED AEs - FCAB - GAS 1.2bar cap |
#6
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Thanks guys will check both of those causes. I had an issue with the engine failsafe mode coming on with a lose connection of the camshaft sensor around the same time this started happening. I fixed the connection and the failsafe mode went away. I assumed they were non related but is there a chance that they are connected in some way?
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2004 E53 4.4L N62 |
#7
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Could be but only when very cold.
I don't think it gets that cold in Sydney, Australia...?
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2004 X5 4.4i 2001 E46 M3 1995 E34 525i 2008 Acura MDX 1984 Maserati 2011 997 Turbo |
#8
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Nah we're lucky to see it lower than 50 degrees on a winters morning where I am and it's been happening on 60-70 degree days...
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2004 E53 4.4L N62 |
#9
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It sounds a lot like the well known intermediate levers issue. Even though the symptoms, (misfires and rough idling at cold engine start), seems to happen more often at colder temperatures than you are experiencing.
It is very easy to find out if you have the intermediate lever issue. If your 4.4 N62 was 'born' between june 2004 and february 2005, then you have the issue. All N62 engine produced in that time frame has it. -Sadly mine too. It is a design/engineering/manufacturing fault/mistake/brain fart, take your pick, from the producent of the intermediate levers, that makes them shrink in cold weather to the point where the computer thinks something is wrong, and cuts the ignition to the affected cylinder(s). If you want it fixed i recommend that you prepare yourself for a heart attack when you get the price. The good news is, that if you can live with these less-than-super-smooth cold starts, then you don't have to do anything. The problem wil not get worse. A tip from a pro intermediate-lever-experienced person: As soon as the stumbling/rough idling begins, stop the engine and wait 20-30 seconds before starting it again. -Enjoy the now smooth idling engine and don't think about it until tomorrow morning. ;-)
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__________________ 2007 E70 4.8i Sport 2004 E53 4.4i Sport - R.I.P. |
#10
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Haha thanks Freestyler
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2004 E53 4.4L N62 |
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