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car is 1991 mercedes 350sdl turbo diesel.

This doesn't happen often, maybe about once every few weeks or so. Its happen 4 times since I got the car about 2 months ago.

The car engine will shut off but the radio stays on. This leads me to believe it is not a battery problem. People have told me idle speed is too low - but mine idles at 600/700 rpm - which should be fine.

These are the possibilities I believe are more likely:

1) carburator needs cleaning. can any mechanic do this and how much does it cost?
2) fuel injection pump problem / fuel supply / filter problem
3) water deposits in the diesel gas

Any MECHANICS here that have seen this problem before and could suggest to me what to do?

I have heard different opinions on diesel additives - if it is so bad for the car tell me exaclty WHY. How else can I get water deposits out of my car without using products such as ISOHEET?

2007-03-26 07:51:26 · 3 answers · asked by odysseyxltd 1 in Cars & Transportation Car Makes Nissan

3 answers

1) It doesn't have a carbutator. It's direct fuel injected.

2) If you had a problem with a fuel filter being plugged, fuel pump giong out, or injector pump going out it would run poorly at higher engine speeds/loads do to the need for more fuel.

3) If you had water in the fuel, it would have a hard time running right after starting as water settles to the bottom and gets sucked up first at startup.

It's possible that your fuel filter gasket is allowing it so suck air and cause the injector pump to cavitate. (not pump fuel)

I'd change the fuel filters first, then if it continues, research it a little more.

2007-03-26 08:17:11 · answer #1 · answered by Mr. KnowItAll 7 · 0 0

One thing that comes to mind is the O2 sensor. Oxygen sensor that is. We have a problem with this in our Pathfinder. That is most likely the most expensive repair. We have not gotten ours done yet. Just so you know do it yourself carb cleaners are not actually that great for your vehicle. Why, i cant remember. Just call around and get quotes from different places for any parts you need and their labour charge per hour, etc. Hope you solve your problem with out having to empty your pocket book. Good luck!

2007-03-29 10:59:51 · answer #2 · answered by Anonymous · 0 0

check for loose hoses or idle is to low. or turbo has a leak.
is the idle in gear or in park it should be 600 at lowest in gear

2007-03-27 20:31:53 · answer #3 · answered by jsn_ayers 4 · 0 0

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