'90 200T starting issues

[Briand Parenteau]

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


On 12/20/06, Geraint Lloyd <geraintlloyd_qc at yahoo.ca> wrote:
>
> What is the car actually doing or not doing?
> is it hot start or cold start or both that is a
> problem.
> Stock or modded ECU?
>
> I have a BTDTASFTTCACOTI with an 89 MC2 200TQA cold
> start problem that
> turned out to be a dead ECU (or ECU component that I
> do not have the
> skills to trace, but did have a spare ECU)
>
> the CSV gets 12v all of the time and has the earth
> switched through the ECU
>
> when I had my drama the guys suggested a push button
> (on the earth) to
> fire the CSV.
>
> Are you sure that you have a Thermo Time switch?
> AFAIK (not very much sometimes) the MC2 / MAC 14 ECU
> doesn't have one
>
> Geraint
>
> BTDTASFTTCACOTI is BTDT Almost Set Fire To The Car And
> Claimed On The
> Insurance.
>
> Briand Parenteau wrote:
> > Hello q-listers,
> >
> > I'm looking for a little direction on this if you
> wouldn't mind.  I have
> > read thru a lot of archives and have tried a number
> of things, but am still
> > seeking a little more 1st hand knowledge.  I have
> confirmed that the CSV
> > does function during output tests, and I have good
> fuel pressure, and good
> > spark.  It looks like the CSV is not getting the
> voltage necessary or has an
> > open circuit to ground when attempting to start the
> car.  However during
> > running output tests with the ECM the CSV works
> fine.  This would lead me to
> > believe that the circuit is ok???  Thermo time
> switch is metioned quite a
> > bit in the archives, but a lot of folks claim that
> this is rarely the
> > problem.  I have 12volts at the thermo time switch
> with the ignition on.  I
> > read that the thermo time switch completes the CSV
> circuit via a ground when
> > cranking engine... This is where I'm getting
> confused...  Any advice would
> > be a great help.
> >
> > Thank you,
> >
> >
>
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-- 
Briand Parenteau
Showmix
617 328-4467 office/fax
617 460-0128 cell
www.showmixevents.com