Thermostat Replacement ( ST1300 ) *

[KoTAOW]

Original article can be viewed here:
http://koczarski.com/ST1300/Thermostat/Thermostat.htm

Contributed by by Adam Koczarski, STOC #265.

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Thermostat Replacement ( ST1300 )

Updated 4/14/2007: Installed a Turbo City replacement thermostat. Hopefully will last longer than the Honda replacements.

Aftermarket thermostat can be purchased here.

Approximate price $29.99



Here's what the stock thermostat looks like. If you're not getting three bars on your temp gauge you probably need yours replaced. Typical symptoms include reduced fuel mileage. Mine dropped about 6 to 8 mpg. Mine didn't appear to be stuck open. I also tested both the new one and the old one and they both appeared to open and close at the temps they were supposed to. But, after replacement I went on a test ride and immediately got three bars, even cruising in 38F conditions.


You disconnect this hose to drain the radiator.


Disconnect this hose too. Then remove the radiator.


Here's what you see after removing the radiator. The thermostat is inside the enclosure in the upper middle of this picture.


Remove the support and you have free access to the thermostat housing. No need to remove the throttle bodies.


I found a loose connection and dripping coolant at the three way junction shown here.


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Thank You again for your contribution Adam Koczarski, STOC #265