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69GMCLonghorn · 08-24-2009, 05:44 PM

You have to take the cooling system one piece at a time.

1) Start with the flow of coolant. Most people check the radiator first to make sure it's not plugged. This is a good idea and necessary, but you also have to make sure the BLOCK isn't plugged. Get it back flushed if you have a good shop in your area. This can help SO much I can't even tell you!

2) Check the water pump and make sure it didn't spin an impellor or is just plain going south.

3) That electric cooling fan. It wasn't designed for that vehicle so maybe it is not strong enough, maybe it is, who knows. Maybe it's a fan shroud issue... Oh and obviously, make sure it's turning on... duh!!!

4) Don't INCREASE the temp of the T-stat. Just get another GOOD 160° T-stat and install it, just to make sure it's not sticking, which it sounds like it could be. Cheap fix if that's what it is.

08-24-2009, 05:44 PM	#2
69GMCLonghorn Registered User Join Date: Dec 2006 Location: Porter Ranch, CA Posts: 978	Re: Heat issues You have to take the cooling system one piece at a time. 1) Start with the flow of coolant. Most people check the radiator first to make sure it's not plugged. This is a good idea and necessary, but you also have to make sure the BLOCK isn't plugged. Get it back flushed if you have a good shop in your area. This can help SO much I can't even tell you! 2) Check the water pump and make sure it didn't spin an impellor or is just plain going south. 3) That electric cooling fan. It wasn't designed for that vehicle so maybe it is not strong enough, maybe it is, who knows. Maybe it's a fan shroud issue... Oh and obviously, make sure it's turning on... duh!!! 4) Don't INCREASE the temp of the T-stat. Just get another GOOD 160° T-stat and install it, just to make sure it's not sticking, which it sounds like it could be. Cheap fix if that's what it is. Last edited by 69GMCLonghorn; 08-24-2009 at 05:45 PM.