how do i know that the cold start is dead on 1997 c280

Asked by Mar 24, 2013 at 09:40 PM about the Mercedes-Benz C-Class

Question type: Maintenance & Repair

1997 c280 started but won't stay running. Fuel  pump new and working, fuel relay checked and works
good, fuel filter replaced.

2 Answers

3,410

Air filter good?

5,355

I don't think these cars have a cold start selonoid. It has a computer controlled throttle body ( drive by wire) that opens slightly to increase idle when it's cold. Your throttle body is probably filthy with dirt build up and not allowing the correct about of air in when the throttle body is in the idle position. If you can remove and clean the throttle body with carb cleaner. I have a V6 so the throttle body was at the back of the engine facing the firewall and it was difficult to get at. You probably have the straight 6, should be easier to get at. You may not even have to remove it. Just removed the intake tube spray the carb cleaner at the throttle body butterfly. Open the butterfly with my finger and just wipe the area clean with a rag. If you are not getting a code for a faulty Throttle body then I'd say it's just dirty.

Your Answer

Mercedes-Benz C-Class Experts

  • #1
    Lorne Grandison
    Reputation
    5,270
  • #2
    PPC123
    Reputation
    3,810
  • #3
    zabi
    Reputation
    2,810
View All

Related Models For Sale

Used Mercedes-Benz E-Class
530 Great Deals out of 21,638 listings starting at $1,999
Used BMW 3 Series
1,133 Great Deals out of 34,002 listings starting at $1,209
Used Mercedes-Benz CLA-Class
185 Great Deals out of 6,265 listings starting at $14,495
Used Mercedes-Benz S-Class
110 Great Deals out of 7,458 listings starting at $1,200
Used Mercedes-Benz CLS-Class
68 Great Deals out of 2,229 listings starting at $6,465
Used BMW 5 Series
486 Great Deals out of 16,342 listings starting at $995
Used Audi A4
243 Great Deals out of 12,238 listings starting at $1,200
Used BMW M3
29 Great Deals out of 1,841 listings starting at $5,495
Used Ford Mustang
344 Great Deals out of 41,949 listings starting at $1,488
Used Chevrolet Camaro
373 Great Deals out of 31,435 listings starting at $3,495
Used Mercedes-Benz M-Class
306 Great Deals out of 6,357 listings starting at $2,900
Used Honda Accord
797 Great Deals out of 89,039 listings starting at $1,444
Used Mercedes-Benz CL-Class
20 Great Deals out of 520 listings starting at $3,980
Used Dodge Charger
326 Great Deals out of 36,250 listings starting at $1,999
Used Mercedes-Benz G-Class
7 Great Deals out of 1,109 listings starting at $26,482

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.