Help - 2000 ML320 stops, then cranks but does not start anymore
08-26-2009, 04:41 PM
#1
Member
Thread Starter
Join Date: Aug 2004
Location: Boston, MA
Posts: 191
Likes: 0
Received 0 Likes
on
0 Posts
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!
08-26-2009, 06:18 PM
#4
Senior Member
Join Date: May 2003
Location: In A Van Down By The River
Posts: 398
Likes: 0
Received 1 Like
on
1 Post
2014 RX 350 F Sport, 2007 Scion tC, 2000 ML 430 Money Pit Finally Gone! Oh Happy Day!
Yes, they fail when hot. Will let you restart when cooled off. Common problem with the ML. 
08-26-2009, 06:23 PM
#5
Senior Member
Join Date: May 2003
Location: In A Van Down By The River
Posts: 398
Likes: 0
Received 1 Like
on
1 Post
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
Trending Topics
11-26-2013, 08:53 AM
#9
Newbie
Join Date: Nov 2013
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
Ml320
12-02-2013, 03:57 PM
#11
Newbie
Join Date: Dec 2013
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
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
