[W126 Coupe] 1- doesn't start in cold 2 - oil pressure strange

[Sharan Bains]

Richard,

Either the cold start sensor (4-pole switch) on the inlet manifold is not 
functioning correctly or you have a weak battery, which in turn is not able 
to support the cold start system components.

As for the oil sender, may just be dirty oil. Try changing the oil and oil 
filter and check again.


talbir





>From: "Shayegan, Richard" <rishayegan at davidson.edu>
>Reply-To: Mercedes Coupes Mailing Lists <mbcoupes at mbcoupes.com>
>To: <mbcoupes at mbcoupes.com>
>Subject: [W126 Coupe] 1- doesn't start in cold 2 - oil pressure strange
>Date: Sat, 22 Jan 2005 14:14:25 -0500
>
>2 things I've noticed as of late. When it's cold out (not super cold,
>but like 35F and lower) the car doesn't like to start. First the starter
>will spin free since it didn't engage (the strange part is to get the
>starter to stop, I have to turn the key all the way to the off position
>and then take it all the way back to the start position - jounce bounce
>the key off the start position basically), then on the next attempt (or
>whenever it finally does engage), I'll have to crank it for a good while
>to get the engine to stumble to life (to get the rpms up to a
>non-stumbling speed I have to give it a little gas). After that it's
>fine. It doesn't do this if it's warm out nor if it's cold out but the
>engine is warm. Any ideas?
>     The second thing is that when I hit the brakes (like to slow down
>for a red light), the oil pressure will drop to about 1.5 and then when
>I complete my stop it will come back up to the usual 2.4-2.8 it does at
>idle. I know technically even if it stayed at 1.5 it's ok, but it never
>did this before so I'm guessing something's wrong. The oil level is
>fine. Any ideas about this one?
>Thanks,
>Richard
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