[Vwdiesel] Bad thermostat?

[James Hansen]

Could be the bottom rad hose collapsing as engine speed picks up- increased
suction from the pump.  just rev the motor and watch it, it'll do it when
rpms go up if it's prone.
-james

-----Original Message-----
From: vwdiesel-bounces at vwfans.com [mailto:vwdiesel-bounces at vwfans.com] On
Behalf Of dieseltdi at verizon.net
Sent: February-07-14 7:49 PM
To: vw fans
Subject: [Vwdiesel] Bad thermostat?

OK, my Jetta did something very odd today.  First of all it has been in the
teens to 20's every morning  and high temps below freezing for the last few
days.  I got in the car and it started right up.  I had the heat over to max
and it began to make heat about the same place it always does.  HOWEVER,
about 3 miles from work, I noticed that the oil temperature AND the water
temperature gauge were getting pretty high (240F for the oil and 100C on the
water).  I turned the fan up full blast on the heater to keep the car from
overheating and made it to work.  The car did not boil over and there was
only the standard amount of pressure in the overflow when I opened it up to
see if it was full, it was.  I couldn't really check to much out this
morning BUT I did notice that the radiator WAS NOT hot!!!!  On the way home
this afternoon, I drove a bit slower and tried to stay off the turbo and
kept the temperatures down to where they should be.  When I go home the
radiator was cold once again.  Top radiator hose was hot but not too hot to
hold in my hand and the bottom radiator hose was essentially cold.  My first
guess is a stuck closed thermostat, second guess is a clogged radiator.
Considering that I still have flow to the heater kind of rules out the water
pump I think.  Before I go out in the cold tomorrow and rip out the
thermostat, I thought I would throw this out there to see if there are any
other ideas?  Hayden

"There are many men of principle in both parties in America, but there is no
party of principle." 
"I do not know if the people of the United States would vote for superior
men if they ran for office, but there can be no doubt that such men do not
run."
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new theory as a danger, every innovation as a toilsome trouble, every social
advance as a first step toward revolution, and that they may absolutely
refuse to move at all."  Alexis de Tocqueville

Proud owner of:
2014 Jeep Grand Cherokee Ecodiesel
1968 Beetle, Still in progress
1982 VW Jetta Coupe GTD "FrankenJetta"
And many, many, many VWs; from a 1947 Beetle (13 Beetles total), to Vans (5
- 3 splitties  2 bay window (both were campers), 1 Vanagon Westy, Rabbits
(3), Karmen Ghia (1), Jettas (11), Passats (2), Dasher (1), New Beetle (1),
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