Mercedes-Benz Forum banner

1 - 3 of 3 Posts

·
Registered
1993 300e
Joined
·
1 Posts
Discussion Starter #1 (Edited)
1993 300e gives it self gas mostly at idle speed. Help! Please someone help me.It seems to be getting worse. I have taken it to several places and I am told the don't have the correct machind to diagnous it.Somebody out there has had this problem I am certain. HELP Thank you
 

·
Registered
Joined
·
5,344 Posts
By "gives itself gas" are you saying it has a fluctuating idle? Any Mercedes shop should have the diagnotic equipment to pull the fault codes. Or for about $10 you can build a code reader yourself and pull them.
 

·
Registered
500SE AMG, E350 4matic, GL 450
Joined
·
5,853 Posts
I am not sure if you have a M103 or M104 engine in my car but I would check the ovp (overload protection relay). It is the relay located next to the firewall with a fuse in it. You have to remove it and test as follows:

1. Set the multimeter to diode mode.
2. Positive test probe to terminal 31 and neg to term 30

norminal value is 0.4V to 1.5V
These are for a M103 engine.
 
1 - 3 of 3 Posts
Top