Hi All!!
Can anybody tell me and/or possibly display a cold start switch and where it is SUPPOSED to be on an 87 TPI?

I have a headache of a mess here and I am starting from square one. This motor is in a '42 Business Coupe and I am starting fresh because I cannot for the life of me figure out why this thing will not run. The injector is there as well as its connector/wiring however I do not see a switch anywhere. EVERYTHING (and I mean everything!) on this motor is brand new down to the ECM. It is NOT a VATS system and I did have it running when I first put it in but it is 700 miles away from me and that was 2 1/2 years ago! Any help would be appreciated.

Thanks in advance!
Oh Yea! If anyone has a pinout of C100 (@ the ECM) for an 87 TPI that would be awesome too. I have one however its on my other computer.... at home.... in Massachusetts...... 700 miles away!!! Thanks again!

 

Cold start switch is on the front of the manifold, next to the Coolant Sensor. It has a connector on it like a fuel injector connector (IIRC). Is is fused, but does not run through the ECM.

For your schematics, try here: (BTW, C100 is the firewall connector to the fuse box)
http://chevythunder.com/

 

The brass Hex head unit

 

The CSI only aids cold starting , it only works when the engine is cranking over and lack of it will not prevent the engine eventually starting

 

You can find the 87 C100 here:

http://berlinetta.info/C100.htm


You can also find the ECM/Dash C207 connector here:

http://berlinetta.info/C207.htm


As VettOzz said, "The brass Hex head unit" The Cold Start switch is circled in YELLOW in this pic. It should have a Purple wire and a Tan wire and like darbysan wrote; the connector will look like a fuel injector plug.




Power is applied thru the CRANK fuse to the C/S switch and the C/S injector. The switch will complete the voltage path to ground when cold,... activating the switch/injector only when the key is turned all the way to START.