Ok, I posted the cold start problem of my 93 190e 2.6. Since then I
read that if you check the ohms arross the terminals of the cold start
valve and get zero or infinity then the valve is bad.
So I tested mine and I get the same reading as if I touched the two
probes together on the ohms meter, there's 100% continuity.
So I figured my valve is bad. I go to a wrecking yard and bring my ohms
meter. I had them pull off three and they all read the same as mine. I
bought one anyway and installed it. My cold start system still doesn't
So then I did what I should have done in the first place and pulled the
connector off the cold start valve and did a voltage check while
starting the car. What happens is, when you first crank the engine
there's about 2-3 volts going to the cold start valve. Then after a
couple of seconds it fades out to 0 volts.
So it seems that there is some voltage going to the valve, and it's
doing it like it's suppose to. (for a few seconds when you first start
the car) So my questions are: Is there suppose to be more voltage
going to the valve at startup? And it's the valve itself suppose to
have 100% continuity at the terminals when it a closed or inoperative state?
Thanks to anyone who can help me out here.