[DML] Found the source of my idle problems

[Phil Priestley <phil@xxxxxxxxxxxxxxxxxx>]

Last week I posted about how my car would spit and sputter until it 
warmed up and it seemed to be the same problem that someone else on the 
list was having.  After sending it to the shop to have the CIS checked 
over the problem was determined to be the thermal vacuum switch in the 
coolant pipe. Darn! I just replaced it with a new one 3 months ago.

The TVS has failed and is now operating in reverse of the way that it 
should. When the car is cold, it shuts off vacuum to the CPR/warmup 
regulator, then right at the temperature when it should close, it opens 
sending constant vacuum to the CPR. It seems to open and close on a 
whim which is why sometimes it starts up just fine and other times not. 
I have a feeling that the piece inside the TVS that shuts off vacuum is 
loose and flopping around which would explain the erratic vacuum 
fluctuations that were measured at the cpr.

I'm not looking forward to pulling the intake again to change that.

Phil Priestley
Alessandros 120
http://alessandros120.com/
(503)370-9951




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