Fuel pump running when ingnition ON, 280 SL

Asked by Talon_2313 Feb 10, 2017 at 04:56 AM about the 1982 Mercedes-Benz 280

Question type: Maintenance & Repair

280 SL W107.042 US model from 1982
The fuel pump is running when the ignition is tuned ON, and obviously when the engine is running.
As per Chilton's guide, this could come from a defective safety switch, or from a stuck pump relay. Am I correct?
Should I repair it or leave it as it is?
Many thanks from your help
Pierre Miossec

5 Answers
220,965

Rowefast answered 7 years ago

Leave it alone. The fuel pump is suppose to run and prime up when the key is in the on position.

Mark helpful

Talon_2313 answered 7 years ago

Thanks for the quick reply. Just read the Chilton's saying "the pump will only run if the starter motor is actuated or if the engine is running" Thus my question.

Mark helpful

Your Answer:

Related Questions

280

Looking for a Used 280 in your area?

CarGurus has 21 nationwide 280 listings and the tools to find you a great deal.

ZIP:

Own this car?

Share your experience with others.

1982 Mercedes-Benz 280

Write a car review

Review another car

Shortcuts

Search Mercedes-Benz 280 Questions

CarGurus Experts

  • #1
    Mick Stewart
    Reputation
    180
  • #2
    tenspeed
    Reputation
    80
  • #3
    bobkat
    Reputation
    70
View All

Know more, shop wisely

Search

Related Models For Sale

Used Mercedes-Benz 300-Class
87 listings starting at $35,950
Used Mercedes-Benz SL-Class
133 Great Deals out of 2,495 listings starting at $4,995
Used Mercedes-Benz 380-Class
82 listings
Used Ford Mustang
877 Great Deals out of 23,035 listings starting at $1,150

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. Content will be removed if CarGurus becomes aware that it violates our policies.