Loss of power on 2000 ML430...
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2007 ML 350
Loss of power on 2000 ML430...
Went on a road trip this past weekend and while doing 80mph I noticed a loss in power. It seemed that when I punched it, to pass, my gas pedal was floored and I could not get any acceleration from the engine?!?
Only when I pushed the switch under the gas pedal the engine would then kick into low gear.
Now driving around town and I wanna get up and go the engine does the same thing, pedal is floored and no power. No engine lights on.
Anyone ever had this issue?
Only when I pushed the switch under the gas pedal the engine would then kick into low gear.
Now driving around town and I wanna get up and go the engine does the same thing, pedal is floored and no power. No engine lights on.
Anyone ever had this issue?
#2
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2010 ML550, 2010 E350 4M, 1966 Corvette Convt C2
Have a dealer pull the data from the computer and examine all the perameters of the various components. They can be degraded and not turn on the CEL but can cause a power loss to some extent. The items that should be checked are the MAF, O2 sensors, computer itself, and the myriad of other sensors. Could also be a partially clogged CAT. But without a complete diagnosis anyone will be guessing.
#3
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Originally Posted by sosh
Have a dealer pull the data from the computer and examine all the perameters of the various components. They can be degraded and not turn on the CEL but can cause a power loss to some extent. The items that should be checked are the MAF, O2 sensors, computer itself, and the myriad of other sensors. Could also be a partially clogged CAT. But without a complete diagnosis anyone will be guessing.
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2007 ML 350
Originally Posted by marcelc
It can also be fuel supply, either faulty fuel pump or partially clogged fuel filter or faulty pressure regulator valve on the fuel filter.
Thanks for the reply.
Im a car noob , where can I find the fuel filters?
#5
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Originally Posted by skyfreedom
Thanks for the reply.
Im a car noob , where can I find the fuel filters?
Im a car noob , where can I find the fuel filters?
Searching on this and other forums (fora?) might get you some pics.
There ought to be some way of checking the fuel supply before pulling up the rear seats and so on - I'm not an expert on that.
Last edited by marcelc; 08-11-2006 at 03:58 PM. Reason: missed a space
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Braddah Ben (05-26-2022)
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2004 ML500
Originally Posted by skyfreedom
while parked i pushed the gas when the rpm's reached 3500 and the engine started to spuder and would not go above 4000 rpms.
the engine almost cut out.
the engine almost cut out.
What is the point of this limitation in park?
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2011 VW cc, 2004 ML350
Originally Posted by marcelc
I believe the filter and pump are near the tank, I've read something about having to remove a rear seat and lift carpet, etc.
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'99ML430, '02ML500, '88 XJS, '00 CLK 430, 2 steam turbine generators, & 2 GE 7FA.01 gas turbines
MAF sensor. If you have a friend with the same Benz and part #. Swap it and see if the problem stops. That will save you some cabbage at the dealer to read the code.
For some reason these can't be fixed with a can of maf sensor cleaner.
$150 ~ $190 on line = plug and play
For some reason these can't be fixed with a can of maf sensor cleaner.
$150 ~ $190 on line = plug and play
#12
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Gas pedal sensor
Having the same problem, no downshift and seems starved for fuel with gas pedal either not reacting or taking a few seconds to do so...serviced at dealer replaced sensors, spark plugs/cables....now suggest gas pedal sensors. Replaced cat on one side last year. I own since new, now 225,000 miles...always used 91 or higher octane fuel
#13
Ml 430 loss of acceleration power
Same thing ^ my Ml430 was studdering out here and there when I was stopped at red lights. Replaced Maf sensor. Solved the idle problem but created issue when putting the gas pedal to the floor. Rpm's slow to climb and it acts like it is getting held back. Severe loss of acceleration when floored.
#14
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Same thing ^ my Ml430 was studdering out here and there when I was stopped at red lights. Replaced Maf sensor. Solved the idle problem but created issue when putting the gas pedal to the floor. Rpm's slow to climb and it acts like it is getting held back. Severe loss of acceleration when floored.
As a test, put back your old one and see what happens.
#15
^ so I got an over seas maf sensor for like 50 bucks check engine came on in a series of 10 cranks would go back off and re appear. Put on a new Bosch maf that I got for 150. Same problem. Will spudder out here and there at red lights/ will run rough before spuddering out/runs ok on highway as long as you do not try to excelerate to much/ still has severe loss of acceleration when floored and even just down shifting/it feels like it is being held back. IT IS NOT THE MAF SENSOR. I have replaced the fuel pump and fuel sensor around 20,000 miles ago (I have 165,000 miles on her). I DO NOT BELIVE IT IS THE FUEL PUMP/assembly. Hellllp!!!! it seems electronic the way it is acting . I do have a k/n air filter however the problem was present before replacing that(to see if it was the problem).....These cars are bugged/ but I love her. Hellllp!
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#20
Loss of power on acceleration
I have the same issue when overtaking or up a steep hill and you push the accelerator beyond half way it then has extremely slow response when you try to accelerate. If you turn the car on and off it goes back to normal. I had an issue starting the car a while back so I changed the fuel filter which sorted that out. I changed the fuel pump recently but the problem persists. It has also just started to drop revs when going around a bend so not sure if it’s related in anyway. Any help would be great if there are any solutions out there. Thank you
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