Low idle issue - help
#1
Low idle issue - help
I have 1999 e320 with 146,000. The car runs good and drives very smooth. However I do have an idle issue. it seems to want to idle around 600 I have adjusted the idle at the throttle and had it to 900 it idled good for about a day and a half and is now back down to around 600 even though the adjustment I made to throttle has not been changed. I am rather stumped on this so any advice would be appreciated!
#2
there is no idle adjustment so not sure how youre adjusting the idle. could be many other things causing the problem, you should go to a dealer and ask them. you also can have the idle bumped up at the dealer. you can only raise the idle a few 100 rpms but you most likely have another issue. fuel pressure, mass air flow, air filter, correct spark plugs and gap?
#3
I did notice that the throttle didn't have the usual screw that I am used to seeing on most cars so maybe, more correctly obviously (now anyway) I didn't correctly adjust the idle. What I did was turn the a plastic screw type of thing that the throttle cable passes through. I do understand that the issue could have many causes, I posted hoping that it was a known issue with an easy fix lol. It seems not! You confirmed what I had already suspected that the hunt is on to find the source of the issue. Not a fun position to be in. Curiously though except for proper gap and plugs as well as air filter (which I checked and is clean) wouldn't the other issues throw a check engine light? I currently do not have a lit check engine light.
#4
I did notice that the throttle didn't have the usual screw that I am used to seeing on most cars so maybe, more correctly obviously (now anyway) I didn't correctly adjust the idle. What I did was turn the a plastic screw type of thing that the throttle cable passes through. I do understand that the issue could have many causes, I posted hoping that it was a known issue with an easy fix lol. It seems not! You confirmed what I had already suspected that the hunt is on to find the source of the issue. Not a fun position to be in. Curiously though except for proper gap and plugs as well as air filter (which I checked and is clean) wouldn't the other issues throw a check engine light? I currently do not have a lit check engine light.
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MercedesFanat1c
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03-07-2008 07:34 AM