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Stant Thermostat - Part#

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Old Apr 25, 2012 | 07:49 AM
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Stant Thermostat - Part#

I suspect my new (to me) '91 4.9 has no thermostat. With the temps a bit lower than normal the past few days the engine just isn't warming up - stays all the way to the left in the "Normal" range, and takes a while to get there.

I happen to have a Stant #16308 thermostat hanging on the peg board in the garage, put can't find any application reference for it. It's a rather conventional-looking thermostat but in an older package, so thinking they might have changed part numbers. I can see from the stamping on the flange that it's 54mm. Just wondering if it might work.
 
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Old Apr 25, 2012 | 01:05 PM
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Sounds like your thermostat might have stuck open. Though the Stant is the right size, I wouldn't run it. Head down to the part store and pick up a quality Gates thermostat and gasket. Depending on your climate, I suggest running a 180 degree instead of a 195.
 
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Old Apr 25, 2012 | 06:51 PM
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Originally Posted by 882tank
Sounds like your thermostat might have stuck open. Though the Stant is the right size, I wouldn't run it. Head down to the part store and pick up a quality Gates thermostat and gasket. Depending on your climate, I suggest running a 180 degree instead of a 195.
Yes, I figure it's either stuck open or removed entirely. I can see there's a new gasket in there which is why I was guessing it might have been removed entirely by the DPO.

FWIW, the 'stat I have is a 180 degree, and since you've confirmed it's the right size (thanks BTW), I'll probably just run it. I take it you're not fond of Stant thermostats?
 
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Old Apr 25, 2012 | 07:57 PM
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Nope, I'm a Gates guy all the way. The Stant you have should work out just fine though.
 
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Old Apr 29, 2012 | 04:46 PM
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Got the housing off yesterday, and sure enough, no stat to be found. I guess that explains pretty well why it wouldn't warm up in cooler weather.

New stat installed. That was an easier fix than most.
 
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Old Apr 29, 2012 | 05:50 PM
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Congrats. Makes you wonder what the hell people are thinking sometimes.
 
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