Thermostat O-Ring Placement, How's it go back in?

[BlackJac]

When I removed the thermostat housing the oring was just sitting inside in front of the thermostat. So I just install the new thermostat, then stick the oring inside and bolt the housing back on? Sorry for my ignorance, never changed one like this.

 

[Jtrain]

They definitely don't like you doing it. I'm pretty sure I used a new one for the record- you never really want to re-use any kind of gasket. My shop had a really tough time with it too.

 

[SHOdded]

When I removed the thermostat housing the oring was just sitting inside in front of the thermostat. So I just install the new thermostat, then stick the oring inside and bolt the housing back on? Sorry for my ignorance, never changed one like this.

Sure sounds like it, from the HowTo Dave did:
http://www.ecoboostperformanceforum.com/index.php/topic,2280.msg32885.html#msg32885

 

[BlackJac]

I figured it out. Thermostat goes in first, then o-ring seal. The end of the thermostat housing is tapered to make the seal with the o-ring. I lost a lot of coolant and refilled about 3/4 a gallon of Motorcraft 50/50 orange pre-mix. I ran it with the heater on high, coolant cap off, and let the fans kick on a few times. Also kicked the rpms up a bit to help push air out of the system, and when I did that the heat got nice and hot coming out of the vents inside. I drove it to work this morning and topped it off with a little more coolant. I checked for leaks too, none visible, so looks good.

 

[SHOdded]

Hit it on all counts!  Good work :thumb:

 

[ZSHO]

It sounds about right,if you can after driving the car 15-20min shut it off and wait 15 min to cool off and turn the coolant cap slowly to release any trapped air in the system,do that a few times and check the reservoir and add coolant as necessary.

 

[BlackJac]

Okay. Thanks for the tip!

 

[SHOnUup]

Good job, looks like you read up on the key points for this job!

Rich

 

[BlackJac]

Yup. Gotta love the forums!

 

[SCSHO]

I figured it out. Thermostat goes in first, then o-ring seal. The end of the thermostat housing is tapered to make the seal with the o-ring. I lost a lot of coolant and refilled about 3/4 a gallon of Motorcraft 50/50 orange pre-mix. I ran it with the heater on high, coolant cap off, and let the fans kick on a few times. Also kicked the rpms up a bit to help push air out of the system, and when I did that the heat got nice and hot coming out of the vents inside. I drove it to work this morning and topped it off with a little more coolant. I checked for leaks too, none visible, so looks good.

Thats the reservoir off to the left side of the engine bay? I managed to loose a lot of coolant as well.