Mercedes Ml320 Fuel Pump Posts
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Mercedes Ml320 Fuel Pump Posts in Questions
My 1998 Mercedes Ml320 just had a fuel pump and fuel filter replaced.? When I put gas in it the gas guage did not move. The mechanic said that I should drive it for 50 miles and if it does not move he will have to drop the tank. He said that it may be stuck otr there is a dashboard electrical problem. Any ideas as to the possible cause of this problem? Before the filter and pump were replaced the gauage was operational.

mohd a replied: "check the connection of the fuel pump or reinstall it"

anywherebuttexas replied: "The filter and pump are unconnected to the Gage It may be an electrical problem, or the sender may be faulty."

where in the car is the fuel pump? for a 1998 mercedes benz ml320 fuel pump

Country Boy replied: "Inside the gas tank."

george 2 replied: "the gas tank"

noganosh04 replied: "If the car has fuel injection then the fuel pump is in the fuel tank !!!!"

menace4a69_187 replied: "inside the gas tank"

Alex replied: "the answer lies within the question"

Mercedes ML320 doesnt start up or ignite.? I have a mercedes ML320 I have a problem with it. When I start it up, it doesn't work. I have to wait about 50-60 minutes for it to work again. I am thinking its the fuel injector or fuel pump. Any ideas whats wrong with it? I can drive it to far places, but the time when I stop it and turn it back on it wont start. The ac turns on and everything. Also when I push the key up, it has the sound as the car is starting up, but it doesnt get to the part when it fully turns the engine on, not sure if im explaining right. The model is a Mercedes ML320 year 1999 or 2000. @Bandit: Yeah that what happens, we are sending it to a shop later on today.

hobbabob replied: "best internet guess is the crankshaft position sensor these are a common failure item on these year models. when in the fail mode, there will be no injection of fuel and no spark. 9-08-09 a diagnostic scan would be appropriate, with a word of caution if a snap-on scanner is used [modus or solus] [software errors abound with these tools] and it may not even recognize a crank shaft position sensor code being set. . the way to tell is to go to live data stream and watch rpm and injection pulse width while cranking [hopefully while in the failure mode] zero rpm and zero pulse width to injectors is the clue the dealers scan tool has none such problems and will reliabley diagnose these system events.. also note that this particular sensor is neither expensive or hard to install [you will need a female torx socket set, 1/4 inch drive ratchet, and extension] location of sensor is left side of bellhousing near the top best of luck"

shArk replied: "Well my advice take it to your local mercedes benz dealer to find out because these are very sophisticated (very smart)cars so better than doing it your self take it to a trusted engineer or your local mercedes benz dealer or you might have to service it ok hope this advice helps!' shArk 50008"

Bandit-05 replied: "So it cranks but just doesn't catch or it catches but doesn't continue to run? A common problem on the V6 engines is a faulty CPS (crankshaft position sensor), as mentioned by the first post. However, it's only one possibility. The ML would have to be scanned by a shop or technician that has the necessary tools to diagnose this problem properly. Just guessing and throwing parts on the car until it's fixed can be an expensive and time consuming way to try to fix it."

happy2b_white replied: "Could be a faulty air flow meter, a bad camshaft sensor, or a fuel filter that's almost full of dirt. Could be dirt and debris in the gas tank. Sometimes it gets in the way, sometimes it doesn't. Crank sensor is a possibility, and so is an ignition switch that's beginning to fall apart. You're right, the problem might be a fuel related issue, but it's more likely to be a problem in the electronics. Let the dealer figure it out."

Question regarding 1998 Mercedes ML320 with 135,000 miles.? I just spent $1,050.00 on a new fuel pump to get this vehicle running. The mechanic advised that the vehicle needs: rear brakes, oil port cover and seal, shifter bushing, two new front tie rods, EGR line, EGR valve, EGR etc., and ABS pump (which alone costs $1,600 for the part). Total parts are roughly $2,200 with $1,300 in labor. Anyone have any direction on (1) whether I should even bother and (2) if I am mechanically inclined where I could find directions to perform these repairs myself. All help/guidance is appreciated.

anywherebuttexas replied: "I believe the shop manual is now available on CD-Rom, and is sold on E-Bay. The answer to your question is that the car is worth more than $2200 in a quick sale, but only if all that stuff is fixed. Rear brakes are easy to do on this car. If all it needs are pads, you just drive out the caliper pins with a 5mm punch, pop out the rattle spring and pads, slip in the new pads and reassemble. If it needs rotors, you have to unbolt the calipers first. Then release the allen screw that holds the rotor, pop off the old and pop on the new. reassemble and you're done. I'm not sure what they mean by the oil port. If it's just a filler cap, buy the cap and replace it. Simple. Shifter bushing is a challenge because you'll have to open the center console. The tie rod ends are easy, but you have to get the car aligned afterwards. All you need to do is to undo the rod end nut, break the joint with a separator, unscrew the rod end, and then reverse to install the new one. EGR looks to be a bear on this car, due to tight access. Maybe the secret is in the CD Rom."

veeeach replied: "You will need the Mercedes SDS to turn off the warning lights on the dash but if that's all thats needed it's all very doable but requires more than just being "mechanically inclined". You have to be comfortable working on cars and be able to diagnose without a mechanic's advice. For instance, if the car needs tie rods, you should know how to go over all the suspension arms and replace as needed before you pay for that wheel alignment. Sometimes fixing one problem exaggerates another. This is a heavy truck that wears these items. If your buying the parts from a helpful dealership ask them for printout of the "WIS instructions". These are really good "how to's" but don't mention a lot of basics as a technician is expected to already know them. Also, try to get a second hand ABS pump from Potomac. They are a MB only dismantler that ships UPS."

Jesse H replied: "jst wan ma 2 points sorri bout ur car"

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