RE: puzzled (was stumped)

["Perry, Christopher" <cperry@cotl.com>]

I would check the resistance of the wires and/or the connectors between
the two ends of the circut.  It is possible that you have a bad
connection that opens when it is hot - commonly called a cold solder
joint -  or another portion of the wire that is generating high
resistance when it gets hot.  It is a normal condition for resistance to
increase when the wires get hot which could be aggrivated by a bad
connection or wire defect.
HTH
chris perry

>-----Original Message-----
>From:	Greg Woodard [SMTP:gwoodard@ndsuext.nodak.edu]
>Sent:	Friday, September 19, 1997 3:52 AM
>To:	quattro@coimbra.ans.net
>Subject:	puzzled (was stumped)
>
>Again thanks to everyone that has offered help on my problem.
>
>Eric, put me unto what I think is the correct path.  He suggest that 
>the coolant temp sensors may be causing the problem.  We checked them 
>lastnight.  The one that I suspect is causing the problem, or at 
>least is a part of the problem, tested 3000+ ohms cold.  Warmed the 
>car up, to where it was starting to miss, 15-20 minutes.  I pulled 
>the connector off of the sensor, and the car started to run the way 
>we have come to expect this car to run when it is warmed up; (really 
>bad).  Measured the resistance of the sensor, less then 120 ohms.  
>Put the plug back on and the engine smoothed out a bunch (still not 
>like it should be).  Then just for fun I pulled the plug off again 
>and jumped the two connectors (0 ohms).  Engine ran perfect.  My son 
>drove it around for 15 minutes- perfect.  He then took it on the 
>road, 15 miles to the town where he goes to school- no problem.  
>Drove around for over two hours- no problem.  Drove home - no 
>problem.  Started right up this morning (46 degrees), but quit three 
>time, as would be expected running full lean.  
>
>So now I'm puzzled, the sensor seems to check out ok, but also seems 
>to be the problem.
>
>Thoughts anyone.
>
>Greg
>gwoodard@ndsuext.nodak.edu