90 4 cil thermostat

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Old 15 Jan 2005, 10:03 am   #1 (permalink)
m Ransley
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Default 90 4 cil thermostat

I just replaced my thermostat and ran it with the heat on till I
believe the air has been removed and have driven it and rechecked it,
level looks good.
But the manual says to loosen the air bleed screw till all bubles are
removed, I skipped this procedure. Is it necessary to do now, I have
driven it several days it is ok, or is air trapped somewhere inside.
Also I recomend anyone buy a factory thermostat, 2 aftermarket failed
in 5 yrs and the last one the gasket was way to narrow, it leaked and
needed alot of silicone to make it seal. I find so many aftermarket
parts junk.

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Old 15 Jan 2005, 11:11 am   #2 (permalink)
Jason James
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Default Re: 90 4 cil thermostat


"m Ransley" <ransley@webtv.net> wrote in message
news:929-41E93EE7-648@storefull-3137.bay.webtv.net...
> I just replaced my thermostat and ran it with the heat on till I
> believe the air has been removed and have driven it and rechecked it,
> level looks good.
> But the manual says to loosen the air bleed screw till all bubles are
> removed, I skipped this procedure. Is it necessary to do now, I have
> driven it several days it is ok, or is air trapped somewhere inside.
> Also I recomend anyone buy a factory thermostat, 2 aftermarket failed
> in 5 yrs and the last one the gasket was way to narrow, it leaked and
> needed alot of silicone to make it seal. I find so many aftermarket
> parts junk.



If there was an airpocket, the turbulance, pressure and heat created in the
cooling system when going for a drive should eventually eliminate any
pockets,.....that has been the backyard-mechy attitude.

I used to prefer a slight drop in level after the 'drive', as it indicated
all pockets had dissipated.

Measuring how much coolant goes in (assuming all the coolant drained out)
is another way.


Jason


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