[Vwdiesel] Bad thermostat?

[dieseltdi at verizon.net]

Fan did not run on shut off this morning or this afternoon.  All the other hoses on the car were hot to the touch and the overflow tank was between max and min mark and it was hot enough to burn my finger when I dipped it in.  What I find weird is that there was no build up to this, it just suddenly happened.  I am inclined to think thermostat because they do often fail in a closed condition. BTW the entire radiator was cold EXECPT for the top radiator hose.  Car ran fine without any smoke or other indication of problems.  Hayden
On Feb 7, 2014, at 8:21 PM, Brian Decker <decker at toledotel.com> wrote:

> Did you test for temperature protection. When driving the wind chill is
> great. I have boiled the top of the radiator and head while the bottom of
> the radiator was frozen. Did the fan come on?
> 
> -----Original Message-----
> From: dieseltdi at verizon.net [mailto:dieseltdi at verizon.net] 
> Sent: Friday, February 07, 2014 6:12 PM
> To: Brian Decker
> Subject: Re: [Vwdiesel] Bad thermostat?
> 
> System is full.  Hayden
> 
> On Feb 7, 2014, at 8:09 PM, Brian Decker <decker at toledotel.com> wrote:
> 
>> Not enough antifreeze?
>> Brian Decker
>> 
>> -----Original Message-----
>> From: vwdiesel-bounces at vwfans.com [mailto:vwdiesel-bounces at vwfans.com] 
>> On Behalf Of dieseltdi at verizon.net
>> Sent: Friday, February 07, 2014 5:49 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."
> "I cannot help fearing that men may reach a point where they look on every
> 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),
> Rabbit Convertible (1) and Rabbit Pickups (3) most now gone but not
> forgotten.
> 
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“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."
“I cannot help fearing that men may reach a point where they look on every 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), Rabbit Convertible (1) and Rabbit Pickups (3) most now gone but not forgotten.