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Re: Cooling System Diagnosis
As davepl mentioned, you can test to see if the pump is at least pushing water by removing the thermostat,reinstall housing and place upper radiator hose into a container. Again, that's only to see if you have water movement but the vanes could still be rusted and worn to the point that it's won't force enough coolant through.
Having said that I had a similar problem with my truck and finally give up on generic t-stats and bought a quality one at CarQuest. Tested it in boiling water to make sure it opened at the approximate rated temp, got a new radiator cap and installed an overflow container.
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68 GMC 250/3 speed Saginaw p/b p/s
69 Chevy 350/350 currently in pieces still lookin for a cab
06 Trailblazer
I just want a vehicle that I can work on, that won't talk to me, leave error msgs or keep track of how I drive...
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