thermostat replacement

Just replaced the tstat in my 97 TJ. Seems like the engine is not
warming up completely. It is staying around 180. I put a 195 tstat in.
Also, It seems the heat is no longer working. could the tstat not be
in all the way. I made sure I put it in correctly. Ideas? Thanks

bspear78 wrote:
> Just replaced the tstat in my 97 TJ. Seems like the engine is not
> warming up completely. It is staying around 180. I put a 195 tstat in.
> Also, It seems the heat is no longer working. could the tstat not be
> in all the way. I made sure I put it in correctly. Ideas? Thanks

When you put the heater hoses back on did you reverse them?

To check flow just squeeze(pinch) the upper radiator hose when the
engine is hot and running. You will be able to feel the heat and
hear/feel the rush of coolant.

You can (with a cold engine) remove the radiator cap, start the
vehicle and wait for the thermostat to open and flow to start.

--
DougW

Maybe that is a defective "new" thermostat.
I currently have one too that is keeping my engine too cool since I
installed it. I have to change it out one day soon. ;-)

Your heat prob might be due to low coolant level. Gotta get that excess air
out!
--
later,
dave AKA vwdoc1
88 XJ 4.0 auto



"DougW" > wrote in message
news
> bspear78 wrote:
>> Just replaced the tstat in my 97 TJ. Seems like the engine is not
>> warming up completely. It is staying around 180. I put a 195 tstat in.
>> Also, It seems the heat is no longer working. could the tstat not be
>> in all the way. I made sure I put it in correctly. Ideas? Thanks
>
> When you put the heater hoses back on did you reverse them?
>
> To check flow just squeeze(pinch) the upper radiator hose when the
> engine is hot and running. You will be able to feel the heat and
> hear/feel the rush of coolant.
>
> You can (with a cold engine) remove the radiator cap, start the
> vehicle and wait for the thermostat to open and flow to start.
>
> --
> DougW
>

bspear78 wrote:
> Just replaced the tstat in my 97 TJ. Seems like the engine is not
> warming up completely. It is staying around 180. I put a 195 tstat in.
> Also, It seems the heat is no longer working. could the tstat not be
> in all the way. I made sure I put it in correctly. Ideas? Thanks

Stupid question, but was it by any chance one of the "failsafe" type? If
so, you'll probably find when you pull it that it locked itself open.

"DougW" > wrote in message
news
> bspear78 wrote:
>> Just replaced the tstat in my 97 TJ. Seems like the engine is not
>> warming up completely. It is staying around 180. I put a 195 tstat in.
>> Also, It seems the heat is no longer working. could the tstat not be
>> in all the way. I made sure I put it in correctly. Ideas? Thanks
>
> When you put the heater hoses back on did you reverse them?

If it's like my '95 there is a 3/4" heater hose and a 5/8" heater hose.
It's really hard to do so, but dumbasses at the factory switched them. I
know from this that having them reversed won't make the heater not work.
The heater is likely to get an air bubble when you replace the thermostat
though. One way to eliminate this is to hook up one heater hose first, then
fill up the heater through the other hose using a funnel. This does sound
like a defective thermostat or incorrect part.

Earle

>
> To check flow just squeeze(pinch) the upper radiator hose when the
> engine is hot and running. You will be able to feel the heat and
> hear/feel the rush of coolant.
>
> You can (with a cold engine) remove the radiator cap, start the
> vehicle and wait for the thermostat to open and flow to start.
>
> --
> DougW
>

> The heater is likely to get an air bubble when you replace the
> thermostat though. One way to eliminate this is to hook up one heater
> hose first, then fill up the heater through the other hose using a
> funnel.

I just slightly open the backflush tee for a moment on my flush-n-fill kit to
let the air out of my system. It's right on top and next to the heater core and
is a great place to purge the air after a coolant fill up. This also worked on
a V8 Chevy.