My 89 740 turbo is having idle speed problems and is failing hydro carbon test required in this part of BC CA. I have checked and changed several items but it still is there. ??? Does the EGR valve affect the idle speed??? Car passed all other tests and is running well but my ability to get any idle speed adjustment = zero. It is idling at 750rpm as it should but whenever I come to a stop it dives to 500rpm before recovery. Any suggestions? Any help would be really appreciated.
Look forward to talking with you guys. I'm a lonnnnnnnng time volvo freak. Since 1961. Have had a few but rerally am satisfied with this one except for this nuisance problem.
Later
Corny
Look forward to talking with you guys. I'm a lonnnnnnnng time volvo freak. Since 1961. Have had a few but rerally am satisfied with this one except for this nuisance problem.
Later
Corny