Date: Wed, 9 Feb 2005 18:01:42 -0800
Reply-To: David Marshall <mailinglist@FASTFORWARD.CA>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: David Marshall <mailinglist@FASTFORWARD.CA>
Subject: Re: Problem with Overheating with ABA conversion
In-Reply-To: <000e01c50ef7$6e98dd30$640fa8c0@DELL>
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Ken,
A few of my customers have had similar experiences because they didn't
remove the original wasserboxer coolant manifold from the system. If the
donor engine has been sitting for a while there is a good chance that the T
stat is seized. So, assuming that you don't have the coolant manifold in
there. The main water pipe from the head goes to the passenger side pipe
and the pump goes to the driver side pipe, I would remove the thermostat
completely and see if there is still a problem.
On later motors from the Jetta IV series of vehicle the sender for the water
temp gauge is calibrated differently. A 100 to 150ohm resistor is needed to
make it read more correctly. Perhaps there is a new style sender in this
engine?
I have never seen pumps fail to push water unless they were wobbling and
making horrible grinding noises.
Failing all that... I would start to suspect the head gasket, especially if
they have previously overheated the motor.
Good luck with solving the problem.
David Marshall
Fast Forward Automotive Inc.
4356 Quesnel-Hixon Road
Quesnel BC Canada V2J 6Z3
http://www.fastforward.ca mailto:sales@fastforward.ca
Phone: (250) 992 7775 FAX: (250) 992 1160
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-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com]On Behalf
Of Kenneth Wilford
Sent: February 9, 2005 2:34 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Problem with Overheating with ABA conversion
OK, I have my customer's ABA 2.0l 97 Jetta engine conversion almost
finished. We finished the exhaust system and wiring harness and it is
running very well. However after running for a while we have an
overheating problem. The temp just goes up and up. If you feel the two
hoses by the engine both of them get hot (the one that comes from the
head gets hot faster than the one on the water pump but they both get
hot). But when you go to the center of the van the two plastic pipes
aren't more than slightly warm and the radiator is stone cold. I can
also get no heat out of either heaters (rear or front).
It seems like I am having a flow or circulation problem. I think that
the thermostat is opening since the hose that is hooked to it does get
hot after a while. I bled the coolant system repeatedly to try to get
all of the air out of the system. Didn't seem to make a difference to
the flow problem. I don't know the history of the Vanagon that this
conversion was put into. I am thinking that I either have:
1. A clogged radiator
2. A bad water pump
3. A bad thermostat
Any insights that you folks who have done this conversion before might
have would be appreciated. It is going into a 91 GL Vanagon with
Automatic transmission.
Thanks,
Ken Wilford
John 3:16
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