why does my idle go up and down between 7K and 9K and never stablizes

Asked by rht Mar 30, 2014 at 02:20 AM about the 1990 Mercedes-Benz 300-Class 4 Dr 300E Sedan

Question type: Maintenance & Repair

1990 Mbenz 300 E four door sedan with M103 engine has problem with idle. It goes in
waves or rocks between 5K and 10K rpms then it runs fine in all other driving situations; what
could be problem?

1 Answer
4,735

Josh answered 10 years ago

I would say it is the Fuel Injection Idle Speed Stabilizer. Also known as a Idle Air Control Valve.

1 people found this helpful.
Mark helpful

Your Answer:

Related Questions

Shortcuts

Search Mercedes-Benz 300-Class Questions

CarGurus Experts

  • #1
    James Ramond
    Reputation
    310
  • #2
    Paul
    Reputation
    300
  • #3
    Storm_2308
    Reputation
    260
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used BMW 3 Series
65 Great Deals out of 1,229 listings starting at $2,500
Used Mercedes-Benz 500-Class
1 listing
Used Mercedes-Benz 420-Class
1 listing
Used Mercedes-Benz G-Class
11 Great Deals out of 204 listings starting at $32,800
Used Mercedes-Benz SL-Class
10 Great Deals out of 141 listings starting at $13,869

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.