Date: Sat, 26 Dec 2009 23:04:01 -0500
Reply-To: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Subject: Re: Maybe some VC
In-Reply-To: <740200.42106.qm@web33502.mail.mud.yahoo.com>
Content-Type: text/plain; charset="iso-8859-1"
Many of these engines also have an electronic thermal time sensor that is
difficult to diagnose and painfully expensive to replace. It is that 3 or 4
wire large sensor at the cylinder head coolant outlet pipe. I am not home so
I can’t get the part number. This sensor runs ~$80 or more. It can also
effect the temp gauge operation. This thing can cause all sorts of grief.
Carefully check the connections before replacing it. Corrosion and broken
wires at the crimps will also cause it to miss read and fail.
Dennis
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Zoran Mladen
Sent: Saturday, December 26, 2009 7:59 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Maybe some VC
Check your temp sensor - I believe it is on that fitting. It sounds like
your engine thinks it is always cold and hence is very difficult to start
when hot. Check the sensor and also check the wire to ensure no breaks.
Z
________________________________
From: pdooley <psdooley@VERIZON.NET>
To: vanagon@GERRY.VANAGON.COM
Sent: Sat, December 26, 2009 3:54:39 PM
Subject: Re: Maybe some VC
The hall sender is where I always begin for no-starts.
Probably unrelated to you're problem, the ignition switch can act up too.
My friend's 92 GTI, same management as your car, wouldn't start after trying
for 40 mins.
We eventually figured the ign switch was bad.
Also, pull the coil wires off, (high and low voltage), check for problems.
Make sure the grounding lug on the valve cover is intact and all wires in
good shape. The digi ECU grounds at that location.
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Robert Ueltzen
Sent: Saturday, December 26, 2009 3:46 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Maybe some VC
I hope everyone had or is having a Merry Christmas.
I am playing a Xmas mechanic with a difficult problem to diagnose. I'm
turning to you vanagonauts because it involves a digifant system like on our
much-beloved Vanagons. And there is always much good advice that comes from
this group. My daughter has a 1991 Jetta whose coolant outlet on the head
decided to separate into two parts and spray coolant over most of the engine
compartment. I had a spare and was able to quickly replace it and the
coolant and drove it two miles to home. However, since then, it has had the
ability to only intermintetly start. That is, it will start and run fine.
You turn it off and it will not start again for another 4 to 12 hours. The
starter will turn the engine over. There is spark to the plugs. The fuel
pump powers up when you turn the key. I can smell the gas in the cylinders
if I pull the plugs after not starting. I've cleaned and dried every
electrical connection I can find - used WD 40, compressed air, contact
cleaner, more compressed air and hair dryer. I'm going to redo the
distributor and hall send connection.
Has anyone had this problem before and/or have a good suggestion?
TIA.
rob u
