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Old 2nd October 2009, 02:31   #1
timmay77
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Did a thermostat replacement today (a lot of pics)

Replaced the thermostat on hdhntr23's Beast today. Too bad he had to work, or I would have watched him do it! Oh well, not too bad, just under 2 hours. Would have been less if I wasn't getting text messages every 5 minutes.....

Thank you to DouglasABaker for some helpful advice.

Thermostat





Thermostat housing removed



Here you can see 3 of the 4 O rings that should be replaced. The other is a tube that goes inbetween them, it has 2 Orings on it, one on each end.







The before mentioned tube is here in the middle. Remove it and replace the 2 Orings. I then put the tube on the thermostat housing for the reinstall.





New thermostat installed





Some of the old radiator fluid



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Old 2nd October 2009, 05:03   #2
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Thanks for the PICS and advice.
Inside 2 hours of your time equates to 2 six packs of your favorite brew in return.!
Where did you buy the new thermostat - BMW dealer or other - how much where the parts?
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Old 2nd October 2009, 05:10   #3
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Did you also replace the temp sensor? Curious - I didn't, now I'm thinking I should have for preventative maintenance.
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Old 2nd October 2009, 05:30   #4
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Quote:
Originally Posted by Mx5 View Post
Thanks for the PICS and advice.
Inside 2 hours of your time equates to 2 six packs of your favorite brew in return.!
Where did you buy the new thermostat - BMW dealer or other - how much where the parts?

Parts were about $230. I bought them at the dealer. Thats not including the lap dances and meals Im going to have to buy Tim on the 17th. That DOES however include about 3 sets of O rings in case any ripped.

Quote:
Originally Posted by pjfox23 View Post
Did you also replace the temp sensor? Curious - I didn't, now I'm thinking I should have for preventative maintenance.
Yes the top temp sensor was replaced too. That part total was including the sensor. If I hadnt already, I wouldve also replaced the lower temp sensor, near the bottom of the radiator.

Yeah I had to work, and Tim's schedule got changed, it originally was planned for me to do it with him YESTERDAY, so to make up for it, Im going to go up there tomorrow and help with yet another clutch install!!!! Id say my full day off tomorrow will make up for not taking a half day yesterday.

For real Tim thanks! You are SO the MAN.

Lap dances on me bro!!! Err wait... Ill BUY lap dances hahaha.
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Old 2nd October 2009, 09:51   #5
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Was there something wrong with it or was this preventative maintenance?
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Old 2nd October 2009, 13:51   #6
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Did you replace Thermostat metal ring too(located inside of housing) ?
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Old 2nd October 2009, 14:04   #7
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I believe hdhntr23 and I have the same SES fault code which is "low temp". Mine comes up every few days and then seems to reset on warm 80 deg ++ days in central Ohio. Last winter it stayed on from November to March. Temp gauge hangs out at about 11 o'clock on the dial. Plenty of threads on the topic but very few replacement with "pics". So, thanks goes out to tim for keeping us current on DIY's.
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Old 2nd October 2009, 18:00   #8
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Thanks for the pics and DIY!
Great that we have on the board more and more DIY with pics!
Used for the O-rings Hylomar sealant just to make sure I don't run in any leaking issues with it.

Changed my waterpump and thermostate a few month ago and forgot to take pics...
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Old 2nd October 2009, 18:19   #9
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The code I was getting on the Peake was a 69 (hehehe I typed 69)... anyway thats "coolant temperature implausibility". It wasnt for PM, this job isnt one of those that one would do JUST for PM. Maybe replacing your sensors but not the T-Stat.

Hope this helps
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Old 3rd October 2009, 03:44   #10
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Quote:
Originally Posted by mkansas View Post
Did you replace Thermostat metal ring too(located inside of housing) ?


Yes, what a PIA to get out, and back in....
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