Cold start and idle

[coyote]

Searched and read all I could for a 'noobe'
I did find the exact problem that I am having on another thread but there was no reply....see link
Cold start, long cranking time '91 500sl

I am having this same cold start and rough idle problem with my 1990 500SL. It only lasts at start up and then for the next 30-60 seconds after start. Once the engine is warm it starts and runs fine. Cold start valve/relay is my best guess right now.
Appreciate any advice.

[coyote]

Problem solved.
Went to the free mechanics clinic and ad the evaluation done on the car. They quickly diagnosed the multiple problems I was having. They stated this was all because the tow company that delivered my car boosted it.

Problems:
1. The ABS light was on.
2. The cold starting and rough idle problem.

Solution:
A $3 fuse that protects the Over Voltage realy (see pictures)

They replaced it at no charge and sent me on my way. Total cost of everything...... ZERO. Wow, am I ever pleased with this dealershipd service (Lone Star Mercedes in Winnipeg)

Here are a few pictures of where the relay and relay fuse are located in case someone else runs into the same problem.

Remove the 5 screws holding on the cover on the far left top engine area.



The over voltage relay is right in the middle with a clear plastic top



The plastic top pops up and the red fuse pulls strait out