Help - 2000 ML320 stops, then cranks but does not start anymore
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Member
Joined: Aug 2004
Posts: 191
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From: Boston, MA
2005 E320, 2004 C240 4Matic, 2001 S430
Help - 2000 ML320 stops, then cranks but does not start anymore
Hello everyone,
I have a 2000 Mercedes ML320 that has a weird problem: it runs for a while, then it stops (randomly, either at idle or while in motion) and then it cranks but does not start anymore unless left for 15-20 minutes...
Here's what I've done so far:
- swapped the gas pump relay with no luck
- took out the fuel filter and blew through it, seems not to be stuck
- flushed out the gas pump by jumping the K3 relay
- now, here's the interesting part - I noticed that after the truck stops, there is no more power at the plug that powers the gas pump. This seems to be the real problem and have no idea why that is. Seems like something is heating up and cutting power... Could it be the relay (again, swapped it with others a couple of times)? The board that it plugs into?
Any help would be greatly appreciated.
Thank you!
I have a 2000 Mercedes ML320 that has a weird problem: it runs for a while, then it stops (randomly, either at idle or while in motion) and then it cranks but does not start anymore unless left for 15-20 minutes...
Here's what I've done so far:
- swapped the gas pump relay with no luck
- took out the fuel filter and blew through it, seems not to be stuck
- flushed out the gas pump by jumping the K3 relay
- now, here's the interesting part - I noticed that after the truck stops, there is no more power at the plug that powers the gas pump. This seems to be the real problem and have no idea why that is. Seems like something is heating up and cutting power... Could it be the relay (again, swapped it with others a couple of times)? The board that it plugs into?
Any help would be greatly appreciated.
Thank you!
Senior Member
Joined: May 2003
Posts: 398
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From: In A Van Down By The River
2014 RX 350 F Sport, 2007 Scion tC, 2000 ML 430 Money Pit Finally Gone! Oh Happy Day!
Plenty of stories here on CPS failures -> http://www.benzworld.org/forums/sear...archid=4784475 
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Ml320
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ml320, ml320, ml350, ml430
Starting problems
We had the exact same problem on our 99 320.
After much searching, it ended up being the crankshaft position sensor, (or whatever the technical name is).
It only sensed movement intermittently, so did not provide spark and gas.
Changed it out and has run great for 7 years.
John
After much searching, it ended up being the crankshaft position sensor, (or whatever the technical name is).
It only sensed movement intermittently, so did not provide spark and gas.
Changed it out and has run great for 7 years.
John
