Thermostat removal

Tiny
ALEXIS NIEVES CARREON
  • MEMBER
  • 2007 CHRYSLER 300
  • 2.7L
  • V6
  • 2WD
  • AUTOMATIC
  • 135,000 MILES
Hello, I removed the power steering to get to the thermostat. I unscrewed top and left screw but I’m having trouble getting to the bottom one. I removed the tube connecting to the thermostat. How can I get to the bottom screw? It’s a nut connected to a screw that comes out together.
Tuesday, May 11th, 2021 AT 10:03 PM

8 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
Good morning,

The nut should come off without the stud being removed with it.

https://www.2carpros.com/articles/replace-thermostat

I attached the procedure with pictures below for you.

Roy
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Wednesday, May 12th, 2021 AT 3:41 AM
Tiny
ALEXIS NIEVES CARREON
  • MEMBER
  • 5 POSTS
Yes. But once both nuts are removed, the pipe can move out of the way. Underneath that are another set of nuts that are attached to a screw that comes off together. I removed one (left side) but the more bottom one I’m having trouble finding the angle let alone fitting a socket/wrench in there.
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Wednesday, May 12th, 2021 AT 7:05 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
Okay, I understand. If there is another bracket on top of the nut, then you need a thin open-end wrench to hold the inner nut while you release the outer nut.

Yes, it is tight. I go in from the left front wheel well to access the housing.

Roy
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Wednesday, May 12th, 2021 AT 7:18 AM
Tiny
ALEXIS NIEVES CARREON
  • MEMBER
  • 5 POSTS
I will try to see if removing the wheel helps. I got enough room in the engine bay but the bolt is pointing downwards at a 45 degree ish angle to the air compressor unit. I might just need to remove the compressor to have the clearance.
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Wednesday, May 12th, 2021 AT 8:51 PM
Tiny
ALEXIS NIEVES CARREON
  • MEMBER
  • 5 POSTS
This remaining nut is underneath the assembly for the heater pipe. This nut holds the thermostat assembly in place. 3 bolts hold it. 2 above the 3 hold the heater pipe on top of the already existing bolts. Heater pipe is removed. All I need is to remove the remaining nut holding the thermostat in place.
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Wednesday, May 12th, 2021 AT 9:03 PM
Tiny
ASEMASTER6371
  • MECHANIC
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Okay, good deal. Did you get it from the left wheel well?

Roy
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Thursday, May 13th, 2021 AT 3:14 AM
Tiny
ALEXIS NIEVES CARREON
  • MEMBER
  • 5 POSTS
No, there wasn’t enough clearance. We loosen the air compressor and that gave us enough clearance to fit a 10mm deep socket. We have now changed the thermostat!
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Friday, May 14th, 2021 AT 5:58 PM
Tiny
ASEMASTER6371
  • MECHANIC
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Good job.

Roy
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Friday, May 14th, 2021 AT 6:09 PM

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