Hi all. I have a 90 300e, 3.0. I'm having a problem starting it in the cold. I was told it was the cold start valve. I went out and brought on and replaced it. Still have the same problem. The problem is, after sitting overnight in cold weather, the car starts right up then stalls. I go through this about 5 times till it idles at around 500 RPM then it goes up to around 1000 RPM then when it warms up it drives like a champ. When I start it, I've tried to put my foot all the way down on the gas and it won't turn over, when I just turn the key it starts and stalls. If i try to give it gas it stalls. When it gets started, and I give it gas, it stalls, if I let it idle for a few minutes it works great. Any one have this problem. If so please help me out. I'm stumpped. Thanks.
Robert

Whats going on?

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Kent Christensen
Albuquerque
'07 GL320CDI, '10 CL550. '01 Porsche Boxster
Two BMW motorcycles

Thanks. I've seen that. I don't know if that is the problem. I have done the cap and rotor and the plugs, all with oem Bosch cap and rotor and plugs. I did not do the split double plat. Just the basic Plat plug. I did do searches and found lots of thing that could be the problem. But most of them when the flore the gas the car starts. My car won't even think about starting with the gas down on the floor. Thanks for the help.
Robert

Ok after $620 bucks, It was the computer. ECU. I got one from a local junk yard and changed the OVP. By the way the two fuse relay DOES NOT WORK on the 300's with a single fuse. They fit but they make the car behave crazy.... lights flashing when starting...exc... I had to pay Mercedes to do all the work for the reason of not being able to dign. the problem myself. I did change the cold start valve, and all the lines to the idle contol valve that had got hard and allowed air, or I thought to go in to the system. I checked all the vaccuum lines, that are all fine. They spent a few hours checking sensors and stuff and came up with the ECU being the problem. When changed, the car starts great. At all temps. Thanks for all the info and the help. Just know that the Whats going on? is not the answer to all the not starting problems. I know that it mentions the ECU but that being a problem is not stated. Later,
Rob