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View Full Version : Cheap way to find out why Service Engine Soon coming on...



vagabond
09-06-2005, 08:29 AM
My 2001 M3 Service Engine Soon light came on during run-of-the-mill spirited driving last week. Not the filler cap (topped off gas tank and double checked) and no strange sounds, power loss, etc. Went out of warranty in June, and a sensor was replaced under warranty during its last visit (June 8th).

Any recommendations on a good independent mechanic near Fairfax/Chantilly to take a look at it? I feel like every time I drive near the dealer I get 200 dollars sucked out of my wallet.

Thanks!

SMOODY
09-06-2005, 10:18 AM
I have two suggestions. 1) Find someone who has a Peake OBD tool that will read. (I have one btw and I work in Chantilly). 2) You could try Ron Willis at Manassas Motorwerks (301-393-1500). He specializes in BMWs. I went to him to have my car inspected for the most recent DE. He is a bit of a 2002 nut, and has several 2002s including one set up for endurance races.

jkuper
09-06-2005, 10:28 AM
Which sensor was replaced?

vagabond
09-06-2005, 02:18 PM
Thanks for the help- The sensor they replaced on my last visit was the Pulse Generator on the exhaust cam. Is this a common failure?

Since I work in Manassas, I may just stop by Manassas Motorwerks.

AG
09-06-2005, 02:40 PM
Thanks for the help- The sensor they replaced on my last visit was the Pulse Generator on the exhaust cam. Is this a common failure?

Since I work in Manassas, I may just stop by Manassas Motorwerks.

The exhaust camshaft position sensor is a pretty common failure on regular E46's. I don't see why the M3 would be any different. Does your SES light go on and off? How many miles on your car?

vagabond
09-06-2005, 02:45 PM
It's been on steady now for almost a week, and the car has 18.5k miles on it.