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Old 09-02-2025, 10:52 AM
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madtexan madtexan is offline
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Join Date: Oct 2003
Location: Richardson, Tx, Good old USA
Posts: 206
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Quote:
Originally Posted by Squidward View Post
What size is the pulley on your water pump? .
It is the original OEM pulley size. These temperature changes haven't been happening with the exact same setup in the past so I suspect something failing.

Quote:
Originally Posted by Squidward View Post
I've become highly suspect of regular thermostats not allowing enough flow because they don't open far enough. I found that when I took my tstat out, I recovered a significant amount more cooling capacity. When I reinstall a thermostat, it will either be a high flow, OR I will drill holes in a standard tstat to allow more flow area.
I guess the simplest thing to do is change thermostat to high flow unit. Any recommendations on model.?

Car also has the OEM Pontiac intake manifold.