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98 ML 320 HELP!! stops running while driving/won't start

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Old 05-09-2007, 06:28 PM
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1998 ML 320
98 ML 320 HELP!! stops running while driving/won't start

I'm new to this...and desperately need help!! A couple of days ago I was driving and my ML just stopped running. I had to wait a few minutes, then it restarted, no problems, no indicator lights. Over the next couple of days it has happened more. Now it won't start at all, or when it does, runs for about 1/2 mile and shuts off again.

Have a new battery-less than 1 year old. Alternator OK. Checked fuses, ok. Fluids ok. Have had somoeone check codes and cleared them...ok there, too.

I do have a valet key, and it has never been able to start the vehicle. When I tried to use the valet key, ignition just turns over and over, but won't start.

Was wondering if perhaps my key is worn (?) or there is a chip problem with it?

Can someone help????? Thanks!
Old 05-10-2007, 09:06 AM
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2014 RX 350 F Sport, 2007 Scion tC, 2000 ML 430 Money Pit Finally Gone! Oh Happy Day!
Originally Posted by lisacolette
I'm new to this...and desperately need help!! A couple of days ago I was driving and my ML just stopped running. I had to wait a few minutes, then it restarted, no problems, no indicator lights. Over the next couple of days it has happened more. Now it won't start at all, or when it does, runs for about 1/2 mile and shuts off again.

Have a new battery-less than 1 year old. Alternator OK. Checked fuses, ok. Fluids ok. Have had somoeone check codes and cleared them...ok there, too.

I do have a valet key, and it has never been able to start the vehicle. When I tried to use the valet key, ignition just turns over and over, but won't start.

Was wondering if perhaps my key is worn (?) or there is a chip problem with it?

Can someone help????? Thanks!
Could be a failing Crank Position Sensor. If you haven't replaced it yet, I would try that first. Very common failure and leaves no codes. My 2 cents.
Old 05-10-2007, 09:10 AM
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It could be a number of reasons this could happen. First get a diagnostic check done to know exactly where the problem is, if you want to try something change your cps (crankshaft positioning sensor) it might help. Good Luck.
Old 05-15-2007, 08:26 AM
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1998 ML 320
Change CPS. Car will not start at all. Any further suggestions?
Old 05-15-2007, 08:27 AM
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1998 ML 320
Changed CPS. Car will not start at all....and yes has plenty of gas. Any furhter suggestions?
Old 05-15-2007, 09:08 AM
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Originally Posted by lisacolette
Changed CPS. Car will not start at all....and yes has plenty of gas. Any furhter suggestions?
Lots of stuff could cause this. Spend a few bucks at a dealer and have it correctly diagnosed or, continue asking for opinions, throw parts at it and walk.
Old 06-04-2007, 11:13 PM
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Check the fuel pump and relay of the fuel pump(in fuse box).
Hope this will solve your problem.
Old 06-07-2007, 03:07 PM
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Cps

Change your CPS $75 and one bolt.

then get back to us. I'll bet ya a beer thats it.
Old 06-11-2007, 08:50 PM
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2001 ML320 fully loaded except the damn navigation sytem.
Well, i just had that expericence this weekend. After gassing up my truck, it wouldnt crank, ten minutes later it cranked with no problem. Then this morning, the same thing happened again. I was pissed, very pissed at that. Especially after replacing the fuel pump and the fuel lines a few months back ($1200). Luckily it was only $350 to get fixed, but my wife is like,"If anything happens to that truck again, it goes." For 75, i wish i knew how to fix that myself, but i only fix computers.
Old 06-11-2007, 10:03 PM
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you can do it yourself if you try.

I didnt know how to fix it either before i read about it in the forums. there are 3 mercedes forums. book mark them all.

So it was your CPS ? they are like computers. Heck , Im just a Realtoe.

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