Friday, November 19, 2010

How do you change a thermostat on a 1989 buick lesabre 3.8 liter v-6?

I have never seen a thermostat housing like this. There is only one bolt. I got it apart but it will not go back together. It cocks when I try to tighten the bolt.How do you change a thermostat on a 1989 buick lesabre 3.8 liter v-6?
Grease up the '; O '; ring at the bottom of the thermostat Housing with a Petroleum Based Grease Like Vaseline.



Twist the Housing left to right whilst pushing downwards on it until the housing mates firmly with the engine WITHOUT any gap , Then put the bolt in %26amp; tighten it up.



If that doesn't work , Replace the '; O '; ring and try again as it has likely swelled larger than the engines seating point.
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