Hi i own a bmw 325i vanos.The rpm goes up to 1.5 whenever the car is moving in neutral.When i disconected the the wire of the spedomiter the problem went away.But i cant drive the the car without the spedomiter.this problem has been bugging me for a long time and nobody can fix this problem.

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Bimmer Forums are the best resource.

https://www.google.com/search?q=2005+BMW+325i+wiring+diagram+for+the+window+switch

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Question edited for clarity. MAKE!
Question moved to Category.

https://www.google.com/search?q=bmw+325ci+vs+bmw+325i

325i

Fuse Box Diagram BMW 3-Series (E46; 1998-2006)

https://fuse-box.info > bmw > bmw-3-series-e46-1998-...
Here you will find fuse box diagrams of BMW 3-Series 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 and 2006 (316i, 318i, 318d, 320i, 320d, 323i, 325i, 328i, ..

Ci, Cabriolet

1998-2006 BMW 3 (E46) Fuse Box Diagram

https://www.e46fanatics.com > ... > E46 > E46 General
Oct 29, 2018 - Mine still has the card that identifies all the fuses but that is a good reference if yours is missing. 2002 BMW 325Ci Cabriolet Automatic, 140K ...

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Hi Adam, I believe the most cost effective action for you is to get the management system designed for your engine. When doing so it may well be required that you also purchase the wiring harness that goes with the replacement unit. Regards John

check for problem drive line "U" joints or cv joints

Could be the VANOS Seals. You can buy them for 60.00 and it takes about 5 hours to do (but will save you a lot of money). Follow the steps at this site and you're good to go: http://www.beisansystems.com/


Good luck!

The camshaft sensor is located on the engine above the alternator. You will need to unscrew the vanos soliniod to replace the sensor

way round it maybe to just disconect it, or look for the fault probably a loose wire, or a bare wire rubbing of the metal work setting it of, best to fit a new 1

The check engine light could be any number of things and the only way to find out is have the codes scanned. The brake light issue is common on E46 3 series. It is an issue were the brown ground wire that goes into the lamp housing melts at the connector causing a loose ground connection. The connector needs to be replaced and also add additional grounding wires to prevent further issues. And for fuel additives either use the cheveron techron, or the bmw fuel additive(the bmw stuff is the exact same thing, so just use which ever is cheaper).

I had the same issue with my 2000 528i. You more than likely need to have the Vanos seals replaced. BMW will tell you that the Vanos unit needs to be replaced but the problem is more than likely isolated to the OEM seals that shipped with the Vanos. This issue has been reported by several BMW owners. This issue has been thoroughly documented and reported to BMW in an effort to seek a corrective fix. Since BMW failed to address the problem, the guys that investigated the issue started their own company providing superior Vanos seals to the deficient OEM Vanos seals.

The company is Beisan Systems, LLC. I ordered their Vanos seal kit and had them installed at a local BMW performance shop for less than half of what BMW wanted to charge me for a Vanos replacement with the same faulty seals. Besian also provides step-by-step DIY instructions; if you have the time.

http://www.beisansystems.com/index.html

Good Luck.

you did not state the yr of your model. A very typical problem in early e46 engines were in the Vanos. Does the car stutter or stall in cold weather starts? Does it hold it's idle? How is the power? DO you suffer power loss below 3000 rpm? These problems are related to a Vanos problem.....