2001 Es300 Thermostat Replacement

[oxfordlexusman]

In changing out my '01 ES300's thermostat, I've run into a problem.........

How do you make sure the replacement thermostat unit fits in the center of the housing?

There doesn't seem to be any guides or machine areas that centers the thermostat in the horizonal housing of the engine. I just very loosley sits in the housing and can "fall" to the lower side.

Am I missing a part or gasket or something ?!?!?!

[lenore]

First where did you buy the thermostat, just wanted to warn you that the original equipment one has a jingle valve in it. A lot of aftermarket do not. This allows burping of air thru the system.

[kakarot]

In changing out my '01 ES300's thermostat, I've run into a problem.........

How do you make sure the replacement thermostat unit fits in the center of the housing?

There doesn't seem to be any guides or machine areas that centers the thermostat in the horizonal housing of the engine. I just very loosley sits in the housing and can "fall" to the lower side.

Am I missing a part or gasket or something ?!?!?!

On my 98 ES300 I align the thermostat jiggle valve with the upper stud bolt,

and insert the thermostat in the water inlet housing.

HINT:

The jiggle valve may be set within 15° of either side of the stud.

I am pretty sure it would be the same with your as well.

[jimjim2331]

.....have you gotten any correct reply to your question...it certainly does not seem right that it does not have an exact fit....i have changed many thermos but on other makes....always a positive seating....are you sure you have right part....jimB