JenniferS

I have a 2003 ML500 It tries to crank but will not kick over. I can hear the fuel pump kick on when I get under the car and have someone turn the key to the on position. I have also charged the battery to make sure its fully charged and still no change. Does anyone have a clue or hint to what it may be?

vmystikilv

starter?

JenniferS

I don't believe it's the starter. It continues to try and start until it stops. It doesn't want to kick over. The fuel pump does work when you get under it and listen you can hear it. I checked the shredder valve and gas flow freely so its not a clogged fuel filter. So I'm stumped any Ideas????

Maj. Dundee

Explain the problem a little better. Does the truck not start sometimes........does it happen when it's hot..........was it an ongoing problem and got worse..........etc.

JenniferS

I noticed that it was starting to take few sec. longer to start. seemed a little worse when its colder out. I went to leave on morning and it just kept trying to start till it stopped on its own. I can hear the fuel pump kick on, and the shredder valve has a steady flow of gas so I don't believe its a fuel problems. and the battery is fully charged. I'm puzzeled. have any ideas?

Maj. Dundee

Does this happen every time you try and start it or is it weather dependent?

Pushing the Schrader valve really doesn't prove anything. An actual reading with a fuel pressure gauge will tell.

When you have this problem, as it is cranking, look at the tachometer needle and see if it moves up slightly. Do this a number of times. If it moves then your ignition circuit is good and it is a fuel issue. If it doesn't then you might need a Crank Position Sensor.

Do you have a scanner? You can't own one of these trucks without one.