FW: Rough Starting 5KS

[dougev <dougev@newpig3.newpig.com>]

Is the thermo time switch near the firewall on a 4000SQ also?   I have 
had similar problems and have been eyeing up a sensor in the front of 
the engine where the radiator hose comes in
to the block.  There are two sensors there one on the top and the other 
on the bottom.  I thought the bottom one was the Thermo Time Switch. 
 Can anyone verify this?   Thanks in advance,   Doug Evans 
   dougev@newpig.com
----------
From:  owner-quattro[SMTP:owner-quattro@coimbra.ans.net]
Sent:  Friday, May 17, 1996 9:21 AM
To:  Gary Harris
Cc:  quattro
Subject:  Re: Rough Starting 5KS


I think it's the sensor called the thermotime switch that is going bad 
located at the back of the engine block i.e. the end facing the 
firewall. 
I had the same problem with the 85' 5000s that I used to own and I got 
it 
replace and the problem was fixed. I think it if I remember correctly 
from
what my 
mechanic told me this switch control the cold-start valve. 

Anthony Chan, First Hill, Seattle, WA, USA.
chan@seattleu.edu
92' 100 V6

On Fri, 17 May 1996, Gary Harris wrote:

> Date: Fri, 17 May 1996 10:59:49 -0400 (EDT)
> From: Gary Harris <garyjh@bernstein.com>
> To: quattro@coimbra.ans.net
> Subject: Rough Starting 5KS
> 
> 
> My '88 5KS ( 71k miles) has recently been exhibiting a strange 
behavior when
> starting.  Right after I feel the engine fire up, it will have an
> *extremely* rough idle.  The car will shake and the engine will make
> coughing/sputtering sounds (as if its not getting enough fuel).  This 
all
> lasts for about 5 - 10 seconds.  Then, almost instantly, the engine 
will
> smooth out and idle normally.  I normally do not touch the 
accelerator
> during startup, but if I do during this rough idling (very lightly, 
in an
> attempt to get it running) the engine will stall.
> 
> Also, sometimes it will take two or three attempts to get the engine 
to
> start (this is before the rough stuff begins).
> 
> This seems to happen only during cold starts.
> 
> I've tried different gasolines without success.  The car had a full 
tune up
> less than 10k miles ago.  I'm using Castrol GTX 20/50 (changed less 
than 1k
> miles ago).  After the engine does start and idles smoothly, it runs 
great!!
> 
> So, what's going on here?!? I would greatly appretiate any
> advice/recomendations!!
> 
> TIA!
> 
> Gary - NYC
> 
> 
> 
> 
> 
>

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