My 1985 BMW 318I runs great but doesn't idle down after warming up. It will idle down and back up.

Asked by Feb 07, 2008 at 12:02 PM about the 1985 BMW 3 Series 318i

Question type: Maintenance & Repair

2 Answers

44,565

Sounds like the throttle pull-off or idle control thermostatic piece (not sure of the name on a BMW) is bad. Typically there is a small thermostat-like device which, as it heats up, lowers the throttle to curb idle instead of the high idle on start-up.

My car does the same thing except sometimes it will rev up and down and the gages go all crazy, i was told it could be a idle injector valve that was dirty or faulty, but it only does this once in a great while.

Your Answer

BMW 3 Series Experts

  • #1
    Tom Demyan
    Reputation
    5,040
  • #2
    Robert Charlson
    Reputation
    1,620
  • #3
    Matt Mankinen
    Reputation
    1,240
View All

Related Models For Sale

Used BMW 5 Series
452 Great Deals out of 16,246 listings starting at $1,995
Used BMW M3
41 Great Deals out of 1,718 listings starting at $5,995
Used Ford Mustang
712 Great Deals out of 38,399 listings starting at $895
Used Chevrolet Camaro
384 Great Deals out of 30,498 listings starting at $3,500
Used BMW 7 Series
144 Great Deals out of 5,852 listings starting at $2,500
Used Dodge Charger
415 Great Deals out of 27,419 listings starting at $2,495
Used Honda Accord
1,035 Great Deals out of 60,523 listings starting at $999
Used BMW 6 Series
89 Great Deals out of 2,688 listings starting at $5,700
Used Honda Civic
802 Great Deals out of 72,084 listings starting at $1,400

Used Cars For Sale

2017 BMW 3 Series For Sale
190 Great Deals out of 8,226 listings starting at $25,984
2016 BMW 3 Series For Sale
47 Great Deals out of 1,705 listings starting at $18,980
2015 BMW 3 Series For Sale
42 Great Deals out of 1,354 listings starting at $15,500
2014 BMW 3 Series For Sale
285 Great Deals out of 5,494 listings starting at $10,900
2013 BMW 3 Series For Sale
48 Great Deals out of 1,599 listings starting at $10,995

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.