M-Class (W163) Produced 1998-2005: ML 230, ML 320, ML 350, ML 400 CDI, ML 430, ML 500, ML 270 CDI

ML430 will not start unless engine is cold PLEASE HELP

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Old 10-06-2009, 11:36 PM
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Mercedes ML430
ML430 will not start unless engine is cold PLEASE HELP

I have a 2001 mercedes ML430 won't start unless engine is cold. I was told this might be a crank shaft sensor. Is there another possible reason for this problem and can I replace it myself? Please tell me where it is located in engine. THANK YOU
Old 10-07-2009, 07:01 PM
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2007 E350
NO START

CRANK SENSOR. IT HAS ONE BOLT AND IT IS ON THE BACK OF THE ENGINE ABOVE THE FLYWHEEL.
Old 10-07-2009, 09:30 PM
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i'm experiencing the same prob...just died sun. while setting in the drive runnin wouldn't restart till i let it set for a few minutes...thought it might be the fuel pump...let us know if the crank sensor is the problem!
Old 10-08-2009, 02:05 AM
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I will let you know. It might be 2 weeks though because I am disabled and short of money. But as soon as I fix it I will let u know. Thank you to all who responded.
Old 10-08-2009, 02:07 AM
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Mercedes ML430
The first time it happened to me it started after 20 minutes, then took longer and longer. When it is hot it takes over 5 hours for my money sucking ML to start. I have put over $10,000 into my ML and only has 80,000 miles. What a money pit. Will NEVER buy another mercedes that's for sure!
Old 10-09-2009, 04:01 AM
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2005 E500 4matic, 99 ML 430, 90 E300
Crank sensor is the easiest culprit to pin down here.
Old 10-10-2009, 12:08 AM
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2007 C230, 1999 M3
I had the same problem on a 99 ML320. I replaced the crankshaft position sensor ($150 at Autobahn) and problem gone.

Here's a link on how to change it.

http://www.peachparts.com/Wikka/M112M113CPS

Good luck.
Old 10-10-2009, 12:28 AM
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thank you!
Old 10-10-2009, 10:36 AM
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ml is a clunker

Originally Posted by xman11
I had the same problem on a 99 ML320. I replaced the crankshaft position sensor ($150 at Autobahn) and problem gone.

Here's a link on how to change it.

http://www.peachparts.com/Wikka/M112M113CPS

Good luck.
xman11- thank u for the link p.s part is 52.00 from advance auto parts and 187.00 from the stealership.
http://www.youtube.com/watch?v=MbS_Si106AI
Old 10-10-2009, 07:56 PM
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have u had lots of problems with ur ML as well? I have a list a mile long of crap gone wrong with it in less than 40,000 miles. since it was SUPPOSEDLY certified
Old 10-10-2009, 08:57 PM
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2005 E500 4matic, 99 ML 430, 90 E300
Rock Auto has the one pin connector lock or two pin connector lock version at about $80. I got mine from the dealer for $97 two years ago.

However I see that autohausaz.com has the Bosch for the ML for $42. That is a bargain.
If it is the two pin connector lock then look under ML 320 or call them. That one is $54
and is also Bosch. Shiping from AZ to CA is two days. Add an oil filter and it is free shipping if the order is over $50. If you need the two pin version
then it will be over $50 and you won't need to add a filter for the free shipping.
Old 10-10-2009, 10:00 PM
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thank you!
Old 10-14-2009, 06:24 PM
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Originally Posted by Racerx18691
have u had lots of problems with ur ML as well? I have a list a mile long of crap gone wrong with it in less than 40,000 miles. since it was SUPPOSEDLY certified
yeah i got a short list but, mine has got 175,xxx miles so, i can't b too hard on it!
brakes...brakes...brakes
alternator
idler pulleyx2
serpentine belt x2
battery
tons of oil
soon to b a power steering pump
most recent is crank shaft sensor

...sure is pretty though!
Old 10-14-2009, 08:50 PM
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did u know there is a recall for the power steering?
Old 10-14-2009, 08:56 PM
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2005 E500 4matic, 99 ML 430, 90 E300
99% of the time the pump is not replaced unless the recalled part leaked so badly that
the pump was damaged. It is things like clamps, hoses and seals that were recalled.
Our third recall for more an improved recall just came a few months ago on a ten year old truck.
Old 10-15-2009, 05:19 PM
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Originally Posted by Racerx18691
did u know there is a recall for the power steering?
ya for the return line i think was too small but, that was replaced in 03!
Old 05-31-2022, 09:27 AM
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ML430
O2 sensors.

Oxygen sensors. Buy a cheap code reader, amazong 25 bucks it will remove a LOT of guesse work. I had No hot start. ( after runing a bit it could stall or It would fail to start) ran scanner it gave O2 sensors in all banks ( four of em on ML430) Leanred you can do a BYPAS ofn teh UPSTREAM so outof the four O2 snesors I only had to get new Down stream and use Foulers to by pas the ones before the catalytic converter. I mention this as a LOT of folks though i was crank shaft sensor. I was told that many times. I bought the scanner, took away their gusse work. and saved like 200 buck on repairs.

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