View Single Post
  #3  
Old 06-16-2009, 08:05 PM
dieseldiehard's Avatar
dieseldiehard dieseldiehard is online now
Dieseldiehard
 
Join Date: Oct 2002
Location: Bay Area No Calif.
Posts: 4,426
Quote:
Originally Posted by BodhiBenz1987 View Post
There is a numbered knob on the driver's side firewall, near the brake master cylinder. It will only affect the base idle speed (i.e. in the winter you can set it a bit higher) but the idle is controlled electronically. Most idle quirks on the 603 reported here are related to the overvoltage protection relay or ELR. Mine will occasionally "hang" up around 900 rpm and drop down very slowly, especially when it is very cold out ... rest of the time it's normal and it's so infrequent that I just ignore it (on the advice of my mechanic).
I have one '87 300D that also occasionally hangs at about 850 -900 RPM, then gradually drops down to normal. It seems to occur when/if I blip the accelerator. I also have not bothered with it, its not a constant occurance. But if someone figures out the cause I'll be all ears.
__________________
'95 E320 Wagon my favorite road car. '99 E300D wolf in sheeps body, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine at 367,750 and counting!
Reply With Quote