Close inspection and yearly service of the fuel injectors should help to keep them in good condition and identify any potential problems before they become too serious. 8. Rough Idle Due to Faulty Idle Control Valve. The idle control valve helps to keep the M3’s engine running smoothly while stopped. The BMW E46 3-Series produced from 2000 to 2006 is one of the more reliable BMWs you can buy. However, there are parts that will fail causing you to be stranded and/or cause major problems, including fires or destruction of more expensive components. These are the 10 most important and common failures on the BMW E46 platform. Next Post2004 BMW 325i 2.5L M54 E46 Valve Cover Replacement. This is a summarized excel table of common repair and maintenance on an BMW E46 from 2006-01. You can see the breakdown of the cost as well. The base 12-cylinder cars are by far the most common—nearly two-thirds of all E31 8-Series sold were 850is and 850Cis. BMW M3 Buyer's Guide: Every Gen from E30 to G80 996-Generation
BMW e46 Cooling System Failure/Leaks from Plastic Components: Weak Rear Shock Mount. Tail Light Failure. Crankcase Vent Valve Failure/Maintenance: Torn Front Axle Boots / Front Axle Failure (Xi AWD models only): M3 Camshaft Gear Bolt Failure (S54 only)
3,220 satisfied customers. 2003 bmw: instrument panel..neutral or 0, they dont stop flashing. I have a 2003 BMW E46 M3 with a 6 speed SMG. When you put the car in gear, the gear flashes on the instrument panel briefly then stops and … read more. 7 posts · Joined 2017. #1 · Mar 26, 2017. I recently bought a e46 m3 convertible the problem i was having was it is not able to shift manually and auto shift kinda worked with a selection of only 2nd 5th and 6th gear or reverse I had the computer reset and smg codes read only code that came up was 2 internal faults. This article will help you understand what you might expect as a new E46 M3 owner or if your M3 is climbing to higher mileage as you enjoy it and what E46 parts you need to keep it reliable. Rod Bearings. If you are looking for an E46 M3, you’ve probably heard about the rod bearing issue.
The only other major thing to look for on the S54 is VANOS. The solenoid can go out without warning and BMW only officially sells the whole module. There are much cheaper rebuilt aftermarket units you can go with though. For the E46 M3 chassis in general, early models had subframe issues.
The accumulator is easy to see from there. You're on the right track though as the oil line can really only be seen w/ mirror and light. If you hit a dead end there, you can buy a dye kit ($25) from an auto parts store. You add the dye to the oil, then use a special set of glasses and UV light to inspect.
Common problems with the E46 are very similar to those with the E36. However, the E46 has a few unique issues of its own. One of the most well-known issues with the E46 is subframe cracking. While there is nothing inherently wrong with the E46 subframe design, repeated stress can cause a fatigue failure which eventually leads to fractures.
1) BMW M60 Nikasil Damage. This issue is mostly a thing of the past. However, there could be a few M60 engines still out there that went under the radar and weren’t fixed. Early M60 cylinder liners are made from Nikasil, which is a combination of aluminum, nickel, and silicone. The S52 is the straight-6 DOHC M-variant engine found in US and Canadian-spec E36 M3s and Z3Ms. While the S52 lacks some of the tech found on the Euro-spec S50 engine, the S52 is a fantastic engine in its own right. The S52 is, in most basic terms, a bored and stroked M52 engine. The M52 was BMW’s replacement for the widely loved M50 engine
The first two years (99, '00) were the most common models (323i, 328i) that had the problem. Later years they beefed things up, but some cars still had problems. The situation was addressed quite some time ago - 6-8 years? ago - with a recall to inspect all E46, and repair with a reinforcement kit if problems were found.
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