Re: [mk1][cold start valve][help]

["A. Bjorkheim" <andreb@u.washington.edu>]

> Ummm I think the thermo plug provides ground to the cold start valve, not power. This
> is how I understand the cold start valve working:
> 
   This is true.  But if you jumper the thermo to run the test for the
cold start valve, as my Bentley says to, you are providing power to both
wires to the valve, thereby turning it off.  

> Power is run to it through the starter solenoid wire, directly. So whenever the
> starter is activated, 12v should appear at one terminal of the cold start valve.
> 
   And at the one terminal of the thermo plug.

> Ground is run to the cold start valve through the time thermo switch, which is closed
> (current runs through it) at low temperatures and open at high temperatures. This is
> so that the cold start valve doesn't inject fuel when starting hot. Also, the time
> thermo switch shuts off after you've run the starter for a certain amount of time, to
> prevent flooding. Therefore, if you jumper the thermoswitch and run the starter, the
> cold start valve should inject fuel... anyone have more to add?  

   The problem is I think that if you jumper it the cold start will never
inject.  The Bentley says if the cold start works, you can test the cold
start plug with a little light.  If it is cold enough the light shoujld
come on during starting and then fade out.  Well, if you put a light on
the terminals with the jumper on the thermo, you will have no difference
in voltage, no light, and no fuel either, at least I think so   =)

    I hope to run the test either later tonight or tomorrow morning.  But
i believe in order to run the test with the thermo out of the loop, you
simpley need to ground the other wire of the thermo plub, the non red/blk
stripe one.  Green I think it is, at least for my car it is.  I will let
you know how it goes.

  Andre'
  Neon Green 79

- --
To subscribe or unsubscribe, send email to scirocco-L-request@scirocco.org,
with your request (subscribe, unsubscribe) in the BODY of the message.

------------------------------