Why engine races when I srtart up?

Asked by Jul 17, 2011 at 05:57 AM about the 1985 Volkswagen Cabriolet

Question type: Maintenance & Repair

When I start the car up the engine races. After the car has been sitting for years I soaked the fuel lines and distributor in Sea Foam, changed fuel pump relay and fuel injection power supply relay. The book says it could be the ECU.

2 Answers

I have an 85 Cabrio and the idle speed fluctuates between 1100 rpm and 2000 rpm on start-up. My mechanic still has to look at it but indicated to me he thinks it might be some sort of vacuum leak in the system or may be related to the oxygen sensor. Have your mechanic take a look at those areas.


Rothare is correct, it may also be a cold start injector or idle air control valve.....it may just be old enough to just need a good warm up!

Your Answer

Volkswagen Cabriolet Experts

  • #1
  • #2
    Scott Sr.
  • #3
View All

Related Models For Sale

Used Volkswagen Rabbit
12 Great Deals out of 384 listings starting at $1,495
Used Volkswagen Golf
78 Great Deals out of 4,764 listings starting at $600
Used Volkswagen GTI
80 Great Deals out of 6,749 listings starting at $900
Used Volkswagen Jetta
422 Great Deals out of 27,985 listings starting at $1,650
Used BMW 3 Series
963 Great Deals out of 33,201 listings starting at $1,000

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.