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rpmdiag
rpmdiag, Tech and Instructor
Category: Mercedes
Satisfied Customers: 7740
Experience:  Since 1975
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My Mercedes will not start

This answer was rated:

My Mercedes will not start

Hi, I'm Ron and I will be helping you today.
Stand by for a moment while I prepare your answer.

The problem can be a loss of spark or fuel. You can check for
spark at the plugs with a spark tester. Check compression too for a
possible valve timing issue with a compression gauge.
You can check fuel pressure with a gauge and all of these tools
should be available to you at your
local parts store for rent or purchase.
You need to check for any stored codes in the computer with a
code reader or a scan tool.
The code reader only gives the codes and definitions, where the
scan tool gives you all
the needed data to diagnose the codes.

Thanks, Ron

Customer: replied 6 months ago.
It is evident that the cold has caused this issue, I drove it this morning here. This weather is bad, I have no warm clothes ext...away from home, is there any common cold weather issue

Yes, the coolant temp sensor will cause this if it is out of calibration. It can be tested with a scope and a scan tool.

Thanks again and please remember to rate me 5 stars now and keep
this link in case you need me again later on.
I don’t get credit for assisting you until you rate me
Ron

If you are satisfied with my answer, I would greatly appreciate a 5
star rating now and I will still assist you after you have rated me
too if another question pops up. I don’t get credit for helping you
until you rate me.
Thanks again, Ron

Our goal here is to assist you in the repair of your vehicle by
supplying you with well educated information. We may not always
have the exact fix you wanted to hear, but our job is to get you on
the right track, which we always do. We can’t hear, see, smell or
touch your vehicle from where we’re at, so your understanding of
that is greatly appreciated. There are no magical or miraculous
answers, but we do our best to guide you in the right direction.
Thanks, Ron

If you are satisfied with my answer, I would greatly appreciate a 5
star rating now and I will still assist you after you have rated me
too if another question pops up. I don’t get credit for helping you
until you rate me.
Thanks again, Ron

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