C240 looses power and almost dies. Will die if you push on accelerator. Will idle rough if you don't. shut it off and let it set 15 minutes and it runs okay. this happens intermitently.

Asked by May 23, 2012 at 12:16 AM about the 2002 Mercedes-Benz C-Class C 240 Sedan

Question type: Maintenance & Repair

4 Answers

1,705

i think your fuel pressure regulator is not working or the injectors r jammed ( carbon deposits ) which causes low fuel amount that is y engine dies as soon as RPMs r increased because the injector r not spraying properly and if not that there is not enough fuel pressure in the fuel rail

2 of 2 people found this helpful.
13,525

Check your fuel pressure. If the fuel pressure is correct look at tps.

3 of 3 people found this helpful.
5,325

First you need to get the codes from the engine checked, this will point you in the right direction to what your problem is. You may find that your your car has misfired on a cylinder and the ecu in an attempt to save the engine will shut down the entire cylinder bank turning your v6 c240 into a 3 cylinder car. You have to shut the car down for the ecu to reset and it will start on all 6 cylinders again. This will continue to happen until you solve the misfiring problem. Causes for misfiring? Bad coil, spark plug wires or a bad Mass Air flow sensor. the coil and wires don't go bad often , but it the car has over 50K mikes on it, it is probably the Mass Air Flow Sensor if it has not been changed yet.( it will even affect the way the transmission shifts) believe it or not. I have explained this in the past in an answer to another related question on here. Look for it.

28 of 28 people found this helpful.

I highly agree with checking fuel pressure instead of spending $. Also the CPS should be next step cause your car shuts off with out reason.

Your Answer

C-Class

Looking for a Used C-Class in your area?

CarGurus has 26,061 nationwide C-Class listings starting at $1,500.

ZIP:

Mercedes-Benz C-Class Experts

  • #1
    Lorne Grandison
    Reputation
    5,240
  • #2
    PPC123
    Reputation
    3,770
  • #3
    zabi
    Reputation
    2,770
View All

Related Models For Sale

Used Mercedes-Benz E-Class
595 Great Deals out of 22,220 listings starting at $1,999
Used BMW 3 Series
1,123 Great Deals out of 33,114 listings starting at $1,428
Used Mercedes-Benz S-Class
117 Great Deals out of 7,628 listings starting at $1,200
Used BMW 5 Series
469 Great Deals out of 16,115 listings starting at $1,032
Used Audi A4
263 Great Deals out of 12,035 listings starting at $1,899
Used BMW M3
47 Great Deals out of 1,946 listings starting at $5,999
Used Mercedes-Benz M-Class
302 Great Deals out of 6,289 listings starting at $1,995
Used Ford Mustang
450 Great Deals out of 42,576 listings starting at $1,488
Used Mercedes-Benz CL-Class
23 Great Deals out of 502 listings starting at $4,580
Used Honda Accord
909 Great Deals out of 78,522 listings starting at $1,295
Used Chevrolet Camaro
534 Great Deals out of 31,193 listings starting at $1,450

Used Cars For Sale

2017 Mercedes-Benz C-Class For Sale
211 Great Deals out of 4,082 listings starting at $24,998
2016 Mercedes-Benz C-Class For Sale
41 Great Deals out of 999 listings starting at $20,999
2015 Mercedes-Benz C-Class For Sale
245 Great Deals out of 3,816 listings starting at $17,990
2014 Mercedes-Benz C-Class For Sale
87 Great Deals out of 1,530 listings starting at $11,995
2013 Mercedes-Benz C-Class For Sale
63 Great Deals out of 1,342 listings starting at $9,900

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.