Originally Posted by DUTCH

Why not use the official MB Electronic Parts Catalog? It's free, if you're in the US. It's what the dealers' parts guys use to determine the correct part.

Originally Posted by whunter

Reference Sensor, Located at front crank pulley.
MB# 0021534628


Reference Sensor, Location: Rear of engine at flywheel.
MB# 0021539128

Originally Posted by TheRose

Hi Dickie!

Thank you to all who are here to help. I truly appreciate you!! Need help with my non-working vehicle.

I own a 1998 Mercedes ML 320. I believe the MB stearlership lacks integrity and try to take advantage of me especially because I am a single female. Anyway, when I noticed the "check engine light" on, I took it to the stealership to assess the problem. They charged me $500.00 just to have it hooked up to their "computer" for diagnostics but could not give me a definite answer. The best they could do was to say that I had a potential safety issue and wanted to charge me more to assess the possible problems.

I wasn't about to give my very hard earned dollars to someone who couldn't give me a straight answer or at least a half decent one. A few days later, my window switch quit working. I bought a new switch and changed it myself (after some trial and error), because I refused to allow the dealer to charge me an arm and a leg.

Then my A/C went out. MB wanted to charge me an arm and a leg. I spoke to a very credible mechanic. He told me to first check the fuse. I discovered that it was indeed a burnt out fuse. Later, my other window switch quit working and found that the fuse burnt out so I changed it myself.

A few weeks later while driving, my car just stalled or died. It wouldn't start up right away. After about 30 mins. the car started up and I barely made it home. I bought a new battery. The car started right up, but then died out after about 2 seconds. After getting information from this site, I thought perhaps I needed to change the crankshaft position sensor. I purchased one from the dealer ($141.00) and had a mechanic change it for me. Unfortunately, that didn't fix the problem. I thought perhaps it was a faulty key, so I used my other key, but no change. It starts up nicely, but dies after 2 seconds.

Can any of you awesome people out there tell me what else I should try? I read about others who had similar problems and it was suggested that it could either be a problem with the MAF or camshaft. One person changed the MAF and it fixed the problem. The MAF on my SUV looks really good and thought perhaps I should buy the MAF cleaner and try that first. Any other suggestions before I proceed?

Thank you!