RE: [DML] Thermal time switch circuit problem, strange need help!

["John Hervey" <john@xxxxxxxxxxxxxxxx>]

Nathan, Check to voltage from the starter on the blue/yellow going to the
TTS switch while your wife is turning the car over. Either a loose
connection or a bad solenoid. You may want to send me the cold start to
check out or touch 12 volts across the terminals, but don't hold it to see
if you have a click.
John Hervey
www.specialtauto.com

  

-----Original Message-----
From: dmcnews@xxxxxxxxxxxxxxx [mailto:dmcnews@xxxxxxxxxxxxxxx] On Behalf Of
valleyrat12
Sent: Thursday, January 12, 2006 6:49 PM
To: dmcnews@xxxxxxxxxxxxxxx
Subject: [DML] Thermal time swich circuit problem, strange need help!

OK, my cold start valve will not fire unless the hot start relay is 
installed. I removed the thermal time switch connector and touched 
the Black/Blue wire to ground while my wife cranked the car: cold 
start valve fires fuel (with hot start relay removed). OK, so 
normally that means the thermal time switch is bad. I just installed 
a new one today and the problem persists with the same symptoms. The 
cold start valve will only fire if A: the hot start relay is 
installed or B: I touch the Blue/Black wire to ground. 

I am assuming that the switch simply grounds the Blue/Black wire to 
complete the circuit. Is this assumption correct? I have jumped the 
case of the thermal time swich to a known good ground (thinking that 
someone used Teflon tape somewhere) to no effect. 

If I touch the other wire Blue/Yellow to ground it shorts out and 
gets very hot. 

In the schematic the two wires simply connect to the two terminals 
on the cold start valve, it does not display how the thermal time 
switch completes the circuit. My skill at reading schematics is not 
all that great, perhaps I am missing something. 

I apologize for taking so much space on the board, I just can't 
figure this issue out! Thanks in advance for any help.

Nathan
2277





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