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stew930 11-30-2010 08:47 AM

Replace thermostat
I am going to replace the thermostat in my 4.7 and I was curious if I can just unhook the hose going to the thermostat and let the coolent run into a bucket or do I have to empty the whole system by removing the pekok on the radiator?


Scottina06 11-30-2010 10:16 AM

Re: Replace thermostat
just the hose

stew930 11-30-2010 10:36 AM

Re: Replace thermostat
I thought I should be able to do that. Thanks

Scottina06 11-30-2010 11:47 AM

Re: Replace thermostat
theres a how to in the how to forum if you need it

Frango100 11-30-2010 02:41 PM

Re: Replace thermostat
And don't forget to remove the air bleed plug at the point the upper radiator hose attaches to the engine, otherwise you won't get all air out at the moment of filling the system again.

stew930 12-19-2010 09:22 PM

Re: Replace thermostat
I replaced the thermostat but the heat never gets real hot. It gets warm but not very hot. Heater core?

Also when I set the HVAC system to Bi Level hardly any air comes out the floor. When I select only the floor the flow does increase.

No errors on the HVAC LED screen, cooling system flushed, and thermostat replaced.


2001 WJ Limited 4.7

Derwood98 12-19-2010 09:27 PM

Re: Replace thermostat
Put a zip lock under the hose connection and it will catch all of the fluid. Just dump it back in when done. My heat works great with a 180 stat.

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