Re: Head Gasket Blown?
 

I did replace the thermostat AFTER this problem occured because this
was my first impression. I have heard people removing the thermostat
but it seems this would affect the proper operating temprature as well
as not solving the actual problem.

Kevin

Mike Romain wrote:
> A stuck thermostat can cause the engine to overheat blowing out a mess
> of the coolant.
>
> I would try topping it up, then warming it up with the rad cap off to
> see if you have circulation. or not.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> kevin.otto@wamu.net wrote:
> >
> > I have an 89 wrangler with a 2.5. I fill the radiator and cooling
> > system. It idles and warms up. I take it for a short ride and by the
> > time I get back the radiator is empty and just steam comes out of the
> > radiator when cap removed. Is the head gasket getting blow by and
> > pressurizing the system causing the coolant to pour out of the overflow?

Re: Head Gasket Blown?
 

I did replace the thermostat AFTER this problem occured because this
was my first impression. I have heard people removing the thermostat
but it seems this would affect the proper operating temprature as well
as not solving the actual problem.

Kevin

Mike Romain wrote:
> A stuck thermostat can cause the engine to overheat blowing out a mess
> of the coolant.
>
> I would try topping it up, then warming it up with the rad cap off to
> see if you have circulation. or not.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> kevin.otto@wamu.net wrote:
> >
> > I have an 89 wrangler with a 2.5. I fill the radiator and cooling
> > system. It idles and warms up. I take it for a short ride and by the
> > time I get back the radiator is empty and just steam comes out of the
> > radiator when cap removed. Is the head gasket getting blow by and
> > pressurizing the system causing the coolant to pour out of the overflow?

Re: Head Gasket Blown?
 

I did replace the thermostat AFTER this problem occured because this
was my first impression. I have heard people removing the thermostat
but it seems this would affect the proper operating temprature as well
as not solving the actual problem.

Kevin

Mike Romain wrote:
> A stuck thermostat can cause the engine to overheat blowing out a mess
> of the coolant.
>
> I would try topping it up, then warming it up with the rad cap off to
> see if you have circulation. or not.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> kevin.otto@wamu.net wrote:
> >
> > I have an 89 wrangler with a 2.5. I fill the radiator and cooling
> > system. It idles and warms up. I take it for a short ride and by the
> > time I get back the radiator is empty and just steam comes out of the
> > radiator when cap removed. Is the head gasket getting blow by and
> > pressurizing the system causing the coolant to pour out of the overflow?

Re: Head Gasket Blown?
 

You may have installed the thermostat in upside-down. Like the
spring and actuator go in the block:
http://www.wjjeeps.com/service/thermostat_40.jpg
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

rollmebackover wrote:
>
> I did replace the thermostat AFTER this problem occured because this
> was my first impression. I have heard people removing the thermostat
> but it seems this would affect the proper operating temprature as well
> as not solving the actual problem.
>
> Kevin

Re: Head Gasket Blown?
 

You may have installed the thermostat in upside-down. Like the
spring and actuator go in the block:
http://www.wjjeeps.com/service/thermostat_40.jpg
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

rollmebackover wrote:
>
> I did replace the thermostat AFTER this problem occured because this
> was my first impression. I have heard people removing the thermostat
> but it seems this would affect the proper operating temprature as well
> as not solving the actual problem.
>
> Kevin

Re: Head Gasket Blown?
 

You may have installed the thermostat in upside-down. Like the
spring and actuator go in the block:
http://www.wjjeeps.com/service/thermostat_40.jpg
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

rollmebackover wrote:
>
> I did replace the thermostat AFTER this problem occured because this
> was my first impression. I have heard people removing the thermostat
> but it seems this would affect the proper operating temprature as well
> as not solving the actual problem.
>
> Kevin

Re: Head Gasket Blown?
 

Removing the thermostat is an excellent diagnostic. Don't expect the heater
to work in this mode, and you are right about proper operating temperature,
but it will eliminate the head gasket as a source of the problem.

Earle

"rollmebackover" <kevin.otto@wamu.net> wrote in message
news:1166735968.251342.84490@42g2000cwt.googlegrou ps.com...
> I did replace the thermostat AFTER this problem occured because this
> was my first impression. I have heard people removing the thermostat
> but it seems this would affect the proper operating temprature as well
> as not solving the actual problem.
>
> Kevin
>
> Mike Romain wrote:
> > A stuck thermostat can cause the engine to overheat blowing out a mess
> > of the coolant.
> >
> > I would try topping it up, then warming it up with the rad cap off to
> > see if you have circulation. or not.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> > Canadian Off Road Trips Photos: Non members can still view!
> > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> > (More Off Road album links at bottom of the view page)
> >
> > kevin.otto@wamu.net wrote:
> > >
> > > I have an 89 wrangler with a 2.5. I fill the radiator and cooling
> > > system. It idles and warms up. I take it for a short ride and by the
> > > time I get back the radiator is empty and just steam comes out of the
> > > radiator when cap removed. Is the head gasket getting blow by and
> > > pressurizing the system causing the coolant to pour out of the
overflow?
>

Re: Head Gasket Blown?
 

Removing the thermostat is an excellent diagnostic. Don't expect the heater
to work in this mode, and you are right about proper operating temperature,
but it will eliminate the head gasket as a source of the problem.

Earle

"rollmebackover" <kevin.otto@wamu.net> wrote in message
news:1166735968.251342.84490@42g2000cwt.googlegrou ps.com...
> I did replace the thermostat AFTER this problem occured because this
> was my first impression. I have heard people removing the thermostat
> but it seems this would affect the proper operating temprature as well
> as not solving the actual problem.
>
> Kevin
>
> Mike Romain wrote:
> > A stuck thermostat can cause the engine to overheat blowing out a mess
> > of the coolant.
> >
> > I would try topping it up, then warming it up with the rad cap off to
> > see if you have circulation. or not.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> > Canadian Off Road Trips Photos: Non members can still view!
> > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> > (More Off Road album links at bottom of the view page)
> >
> > kevin.otto@wamu.net wrote:
> > >
> > > I have an 89 wrangler with a 2.5. I fill the radiator and cooling
> > > system. It idles and warms up. I take it for a short ride and by the
> > > time I get back the radiator is empty and just steam comes out of the
> > > radiator when cap removed. Is the head gasket getting blow by and
> > > pressurizing the system causing the coolant to pour out of the
overflow?
>

Re: Head Gasket Blown?
 

Removing the thermostat is an excellent diagnostic. Don't expect the heater
to work in this mode, and you are right about proper operating temperature,
but it will eliminate the head gasket as a source of the problem.

Earle

"rollmebackover" <kevin.otto@wamu.net> wrote in message
news:1166735968.251342.84490@42g2000cwt.googlegrou ps.com...
> I did replace the thermostat AFTER this problem occured because this
> was my first impression. I have heard people removing the thermostat
> but it seems this would affect the proper operating temprature as well
> as not solving the actual problem.
>
> Kevin
>
> Mike Romain wrote:
> > A stuck thermostat can cause the engine to overheat blowing out a mess
> > of the coolant.
> >
> > I would try topping it up, then warming it up with the rad cap off to
> > see if you have circulation. or not.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> > Canadian Off Road Trips Photos: Non members can still view!
> > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> > (More Off Road album links at bottom of the view page)
> >
> > kevin.otto@wamu.net wrote:
> > >
> > > I have an 89 wrangler with a 2.5. I fill the radiator and cooling
> > > system. It idles and warms up. I take it for a short ride and by the
> > > time I get back the radiator is empty and just steam comes out of the
> > > radiator when cap removed. Is the head gasket getting blow by and
> > > pressurizing the system causing the coolant to pour out of the
overflow?
>

Re: Head Gasket Blown?
 

So far it looks like the head needs to come off. I removed the
thermostat and drove to the end of the street. I checked under the
hood and was hearing a random popping sound. I noticed the upper
radiator hose vibrating when the sound occured. I gripped the hose and
felt the jolt every time the sound occured. I also noticed pressure
building and the overflow tank starting to fill and over flow. This
looks like the head leaking and building pressure in the cooling
system. Does anyone know of any other possibilities?

Thanks,
Kevin