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Mfriend3

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  • Name
    Matt
  • Location
    Indiana
  • Drives
    2006 Chevy Tahoe

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  1. Mfriend3
    I believe it is fixed and it turns out that the radiator has a restrictor on the small hose that goes to the surge tank. But what I think is that the restrictor was letting to much coolant flow to the surge tank and bypassing the thermostat and keeping the engine cool. I added a brass shutoff to that hose and the temperature I’d now running around 195-200 and I can adjust the flow and temperature. Thanks for everyone’s help. I will let you know if I have any other issues.
  2. Mfriend3
    Well I decided before I bypassed the heater. I would try and restrict the return hose from the coolant surge tank to the water pump/ heater hose. Then started it up and let it run came right up to temperature about 197 degrees and then I drove it stayed around that temperature fluctuates a few degrees up and down. Not sure if this is a fix but I will drive around some and test. I’m sure I will need to adjust how much flow and see how it does. I’m still looking for a fix and other suggestions or ideas. Thanks everyone for your advice!
  3. Mfriend3
    I will do that it does make sense. I will have to figure out how to bypass heater hoses but the hose to the surge tank (return)connects to the heater hoses.
  4. Mfriend3
    I have replaced the coolant temp sensor and harness when replacing the engine. The heater gets warm not as hot as I would think but is putting out heat. As far as bleeding all the air I have been trying to find the best way to make sure it’s all out but it’s hard to know. As many times as I have drained and filled the system you would hope I don’t have any air pockets. Thanks for help alway open to suggestions. This is driving me crazy.
  5. Mfriend3
    I got a 2006 Tahoe that needed an engine. found a remanufactured (z code engine) had installed with new water pump, radiator and thermostat ( have replaced 3 times with factory 187 degree stat). Now the engine runs about 165 to 175 on the road. When idling it will get up to about 210 and will stay there all day idling fans turning on and off working normally. But when I drive temp drops back down to 165-175. Has anybody sean this and know what the issue might be? I’m checking coolant temperature with ODBII scanner and gage.
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