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Problems after water pump replacement.

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Old Mar 27, 2006 | 10:53 AM
  #1  
T/A Barracus's Avatar
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Default Problems after water pump replacement.

Hey guys, I changed out the water pump in my mother in law's 79 Corvette and while I was at it changed the fan clutch for it was leaking lubricant. After I got it all put back together and filled with coolant. I took it for a spin and the teperature gauge never moved from cool and the heater is not getting hot. I know the temperature sending unit was working properly before I started this project. I have seen no leaks since I finished but the upper radiator hose did not seem like it had that much presure.

How can I tell if the coolant is even moving through the car?

Thanks for any help you guys can provide.
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Old Mar 27, 2006 | 12:41 PM
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did you take the thermostat out?
a quick way to see if its moving coolant is take a radiator tube off and start it
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Old Mar 27, 2006 | 12:46 PM
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Sounds like the thermostat is stuck open to me, or maby even left out.

My s-10 blazer used to take 30-45 minutes to get up to temp if you were driving it. Replaced the stat and it was perfect.
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Old Mar 27, 2006 | 08:03 PM
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I also say thermostat stuck open. If that's not it, the engine coolant temp sensor has a problem. I don't know too much about 79 vette's though.
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