Thank you Robert, it starts to make sense now, but I'm still not quite sure. I'm having problems with cold starting. Warm starts are perfect. At the first crank, the engine starts very eager, but after 2 or three seconds, the engine starts stalling en after 15 seconds or so, it stops. This is repeated for 3 cranks and then the car idles fine. After a minute or 4 the engine temperature rises and the car starts to run normally. Keeping this I figure that the cold start valve works fine but that the thermo time switch might be the culprit. Looking at the schematics I thought that the cold start valve is correctly operating while cranking, but not during the first minutes (while the engine is still cold). I suspect that the fuel accumulator and cold start value are working correctly because the engine starts very eagerly while cranking. I remember inspecting the connection to the thermo time switch when I bought the car and putting it back the same way as I got it out. (I checked this because my car has always had this problem). ----- Original Message ----- Date: Fri, 23 Mar 2001 01:36:58 -0000 From: DMCVegas@xxxx Subject: Re: Thermo Time Switch YES! It does mater which way the wires are plugged into the thermo time switch. When looking at the schematic of the tt switch and the cold start valve, you'll see that both are connected together with 2 wires, and that the tt switch also has a ground connection. Plus the cold start circuit is tied into the starter, so this circuit will only be active durring engine cranking.