Thermostat starting to go?

callaway · **Posted:** Tue Jan 13, 2009 10:45 am

When I have the kj moving and the heat on hot air will come out of the vents ( as it should ). When the vehicle is no longer in motion cold air starts blowing from the vents almost as if I turned the thermostat dial from warm air all the way to cold.
Is the thermostat starting to die?

tjkj2002 · **Posted:** Tue Jan 13, 2009 11:00 am

Check your coolant level,you probably have a crack radiator.

A bad t-stat you either will never heat up(stuck open) or overheat(stuck closed).

callaway · **Posted:** Tue Jan 13, 2009 11:26 am

tjkj2002 wrote:

you probably have a crack radiator.

Maximum Carnage · **Posted:** Tue Jan 13, 2009 2:48 pm

New with free shipping http://www.radiatorbarn.com/

sleeve84028 · **Posted:** Tue Jan 13, 2009 3:17 pm

How often do people replace their thermostat?

I'm flip-flopping over swapping mine out lately

tommudd · **Posted:** Tue Jan 13, 2009 3:34 pm

sleeve84028 wrote:

How often do people replace their thermostat?

I'm flip-flopping over swapping mine out lately

98% replace when they no longer work :lol:

sleeve84028 · **Posted:** Tue Jan 13, 2009 4:15 pm

tommudd wrote:

98% replace when they no longer work :lol:

Does that mean I fall into a 2% catagory that replaces a functional part with another functional part?

Jeepjeepster · **Posted:** Tue Jan 13, 2009 4:57 pm

sleeve84028 wrote:

How often do people replace their thermostat?

I'm flip-flopping over swapping mine out lately

I plan on replacing mine at 60k..

tjkj2002 · **Posted:** Tue Jan 13, 2009 5:02 pm

sleeve84028 wrote:

tommudd wrote:

98% replace when they no longer work :lol:

Does that mean I fall into a 2% catagory that replaces a functional part with another functional part?

Yep,the same as me.I've replaced mine twice so far.

snowsport · **Joined:** Tue Oct 18, 2005 11:52 pm **Posts:** 1211

I've gotten into that habit too with this KJ. There's a bunch of things I have replaced that were still working: battery, headlight and foglight bulbs, rad hoses, thermostat, fan belt. Even the OE tires had a lot of tread on them. Funny about those, though, the tire shop instinctively knew to throw them out when they put my new tires on, didn't even ask me if I wanted them... :lol:

For me the reason is simple: less chance of breaking down when it's really cold. In my experience, if a thermostat is going to quit, it'll wait for a nasty cold day when you're out of town a few miles to do it.
I remember Rush 345 posted a link once about thermostats that will default to open when they fail (at least then you can make it home), does anyone remember that?

jeepkj02 · **Posted:** Tue Jan 13, 2009 8:52 pm

Going to replace my thermostat soon with this one.

http://www.motoradusa.com/products/index.html

It fails in the open position so it doesn't overheat.

Thermostat starting to go?

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