Guys I am looking for some help.
I was having problems with the Check Engine light coming on and hesitation while accelerating. I also had the engine lose power and then all of a sudden it started back up. Reading the forums I found that I should replaced the MAF, which I did, and then took the truck out for an oil change. A day later I tried starting the truck and nothing. The engine cranks but I get a Start Error message. It seems to turn over fine but just doesn't start. Sorry for my non mechanical terminology. Any ideas? before i take it to the dealer? I have read that the Crank Position Sensor should be replaced.

Am I on the right track or should I take it to the dealer. I would love to save some $ but I am looking for advice.

thanks

 

What Model Year is this ?

 

It is a 2000 ML320

 

Take it into the dealer, have them check out whats wrong...most you pay is for diagnostics, and if you can DIY whatever they tell you the prob is, then DIY it.

 

Try a different key, could a transponder issue.

 

I would replace the CPS. When it fails it doesn't leave a code. Very common failure on the newer Mercedes engines. My 2 cents.

 

I had similar problems with my '99 clk and when the dealer changed the mas sensor (air mass meter), the problems you describe dissappeared and no similar issues since. Good luck with this route!

 

He did this already....didn't you read his post?

 

Get a diagnostic check like benz nut mentioned before you waste money changing parts unnecessarly. It cound be cps or spark plugs and or wires or fuel filter. Good Luck.

 

if you are getting a "start error" message its not a CKP sensor. could be a key and possibly a DAS module - there is some DTB on the latter somewhere.
Go to your local dealer and let the experts fix it.

 

could also be coil packs. this happened to me. see what codes your pulling, go to a independent shop and find out. most places do it for free.

 

bad coil packs will not cause the cluster to display 'start error" it is a DAS issue that can be caused by the things I mentioned earlier and also - and more often, a weak battery.