'90 200T starting issues

[E. Roy Wendell IV]

On Dec 21, 2006, at 1:29 AM, Briand Parenteau wrote:

> Sorry for not giving greater detail.  The problem is at cold start  
> and hot
> start.  I can get the car started with ether.  It has a stock ECU  
> and I have
> a spare that I swapped in and out, problem persists.  Thermotime  
> switch does
> exist, shown in the bentley manual, and I've identified it's  
> location on the
> vehicle.  If I get it running, and turn it off it'll restart  
> immediatelty,
> but after 10 minutes of sitting, no start.  I pulled out the CSV  
> and watched
> it fire while conducting output test on ECU.  However on start up  
> it looks
> like an open circuit there, or perhaps a short to ground, gonna  
> investigate
> this angle further tomorrow...  Plugs are dry.
>
> TIA,
>
> bp

Geraint is correct, there is no thermo time switch on any MC engine.  
The CSV is controlled entirely by the ECU which is why there is an  
ECU output test for it. If there was a thermo time switch then why  
have the CSV hooked to the ECU?

The component that you are looking at and assuming is a thermo time  
switch is probably the multi function temp sensor which is similarly  
bulky. The sensor you need to check is the one pin temp sender  
screwed into the head near the #1 spark plug. See this excellent  
reference: http://www.sjmautotechnik.com/trouble_shooting/10vcoolt.html

Be very very careful with the moronic layout of the Bentley manual.  
Many times the component layout diagrams are mislabled as applying to  
all turbo cars when in fact they are correct only for the very early  
turbo cars (KT engine?), not the MC turbo motor.

Roy Wendell
erwendell at mac.com
Too many type 44 tq
A pair of MR2s