New here due to the fact that I have a perplexing problem that one car shop
can't seem to fix and I've sunk in major $$$ already.. Don't feel like
sinking anymore $$ until I can have an inkling from the advice of the
experienced Mercedes owners out here on this newsgroup...
Here's the problem:
When I cold start my E190 2.3 L 1993 vehicle, the idle running of the engine
would be fine... however, after driving for about 5-10 minutes around town
and stopping the engine and then restarting, the idling would be erratic and
will stop running immediately after startup. I have to give it steady gas
for about 2-4 mins before the idling speed would be running constant at
around 6-7000 rpm.
I've had this problem since mid 2002 and brought it into the shop (they
specialize in European cars) at that time... they thought it might be my
fuel injector being dirty and so I spent over $1300 to get that changed
(labour included) and it's still doing the same thing after being "fixed"...
at that time after getting the car back, I didn't want to spend anymore $$
for them to take a look at it and so I asked them to increase the idle speed
to around 10,000 rpm so that when the engine gets really warm, the idle
speed would fall to around 6000-7000rpm and not to 0rpm.
Well, this held for awhile until lately when it started again... it seems
like the idle speed is flatening out at around 7k rpm and when the engine
gets really warm, it'd fall to 0.
Does my problem sound familiar to someone who had experienced this and
solved it? Does oil pressure have anything to do with it? The reason is
that I've noticed that whenever the idling goes to near zero, the oil
pressure almost always was below the "1" bar instead of the steady "2" bar
(while gasing, the bar would be at the highest "3" bar)..