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2004 E46 M3 Idle Judder and loss of power
Hi, I have a 2004 Laguna seca blue E46 M3 Cabrio SMG, ive recently started experiencing some issues with the car, i get intermediet idle judder and 1500 rpm and also at 2500 rpm, and the car feels sluggish i ran the scanner and only got code P0441- Evaporative Emission Control System- Incorrect flow detected. I havent done anything to the car aside from a Megan Racing Muffler which gave me no issue within the 4+ months ive had it on the car. I recently changed spark plugs this week and still no improvement. The issue is still there. I ran my snap on scanner on it and looked thru everything, everything seems perfectly fine, no issues with coilpacks or injectors or MAF. My car had 130k miles on it and Im really trying to get down to the bottom of it. I would appreciate any help thank you.
Wagon meister :)
BMW Tech Expert
Welcome to the Forum!
Also do you have any records on the VANOS being replaced/refreshed? Do you hear a rattle at the RPM's as well? Sound like an empty paint can by chance?
When was the last time the valves were adjusted?
You should be able to watch live data with the scanner, what is going on at that time?
Darin
Current:
16 220i Active Tourer Platinsilver MET (C08)/Dakota Black (PDSW), P7ACA, P7LDA, P7LHA, P9BDA, 6sp Manual - Wife's new toy!
05 325it Electric Red(438)/Gray(N6TT) ZCW, ZSP 5sp Manual Back set cover, trunk mat, Euro Infra-Rot front windshield, and mud flaps! Mr. Wagon My new Winter car.
05 M3 Imolarot II(405)/Gray(N5TT) ZCW, ZPP 6sp Manual C.F. Lip, CSL diffuser, SSK, Euro Infra-Rot front windshield and a trunk liner! Mr. Go_Fast Stored for the Winter
Past:
95 318is Montreal Blue Met (297)/Beige(K1SN) RIP, killed by an Idiot.
84 M535i gray market Burgandy Rot Met/Black Leather Lowered by Intrax on bilies, poly everywhere, B&B cat back system, K&N, and a hitch! Da Beast - Still running w/400k+!
91 316i euro Tizianrot/Gray cloth - E-36 w/M-40 RIP, but great on gas! Best was 38 MPG
82 528i euro Saphire Blue Met/Blue Leather RIP
79 525 euro Green/Green RIP
79 318 Silver/Black - The first one that got it all started
M-Flight Member
Member
Hi, and yea the vanos makes a little noise first at start up, and no i do not believe it was ever changed but it does not make noise when im driving. And i dont know that last time the valves were adjusted, havent done that since i got the car. And when i checked the live data on the scanner nothing looked out of place. But the vanos does not make noise when im driving, no rattle or anything only a little noise on morning start up of the car. its also gotten worse, the car is so sluggish now and doesnt feel powerful at all.
Wagon meister :)
BMW Tech Expert
Normally the valve are adjusted every Inspection, or about 30k miles. If the VANOS is acting up, you will get several codes for timing being out of adjustment, or solenoid failure, ect. and it can cause the car not to run properly. Also vacuum leaks can make the car idle badly too.
Just so I understand correctly, your SES light is not on during all this?
Darin
Current:
16 220i Active Tourer Platinsilver MET (C08)/Dakota Black (PDSW), P7ACA, P7LDA, P7LHA, P9BDA, 6sp Manual - Wife's new toy!
05 325it Electric Red(438)/Gray(N6TT) ZCW, ZSP 5sp Manual Back set cover, trunk mat, Euro Infra-Rot front windshield, and mud flaps! Mr. Wagon My new Winter car.
05 M3 Imolarot II(405)/Gray(N5TT) ZCW, ZPP 6sp Manual C.F. Lip, CSL diffuser, SSK, Euro Infra-Rot front windshield and a trunk liner! Mr. Go_Fast Stored for the Winter
Past:
95 318is Montreal Blue Met (297)/Beige(K1SN) RIP, killed by an Idiot.
84 M535i gray market Burgandy Rot Met/Black Leather Lowered by Intrax on bilies, poly everywhere, B&B cat back system, K&N, and a hitch! Da Beast - Still running w/400k+!
91 316i euro Tizianrot/Gray cloth - E-36 w/M-40 RIP, but great on gas! Best was 38 MPG
82 528i euro Saphire Blue Met/Blue Leather RIP
79 525 euro Green/Green RIP
79 318 Silver/Black - The first one that got it all started
M-Flight Member
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