3.8L Thermostat replacement: How-to



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Thread: 3.8L Thermostat replacement: How-to

  1. #1
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    3.8L Thermostat replacement: How-to

    After putting a new water pump and lower radiator hose on my 98 T&C, I decided to replace the thermostat and upper radiator hose. Glad I did. The hose was nearly shot. Have 162, 720 miles on the original factory parts. This is about a one hour job.

    Along the way, I snapped some pictures.
    Here is a tutorial guide to doing the job if you are so inclined:

    http://www.flickr.com/photos/landar/...7622875853230/
    98 Town&Country LXI, 3.8L, 192k miles (sold)

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    Thanks, nice pictures.
    1996 Town & Country, Original owners, 3.8L 95,000 miles.

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    FSM gives a 250 lb-in torque value for the housing bolts (which is just under 21 lb-ft).
    After I tightened to that specification, the housing cracked. Do not use that figure, it's likely an error.
    For a 3.0 engine, which uses the same basic design, the same manual gives 105 lb-in.

  5. #4
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    Quote Originally Posted by alvin View Post
    FSM gives a 250 lb-in torque value for the housing bolts (which is just under 21 lb-ft).
    After I tightened to that specification, the housing cracked. Do not use that figure, it's likely an error.
    For a 3.0 engine, which uses the same basic design, the same manual gives 105 lb-in.
    I do not have an FSM so I torqued mine to 13 lb-ft based on the size of the bolt. Seemed about right. If anyone knows the right amount for sure, let me know and I will add it to the tutorial.
    98 Town&Country LXI, 3.8L, 192k miles (sold)

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