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CATEGORY LISTINGS > FORD DIESEL > Running TOO cool? 7.3 Non-Turbo [ REFRESH ]
Thread Title:

Running TOO cool? 7.3 Non-Turbo


Created On Monday January 22, 2007 15:12 Diesel Talk
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boozler
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Joined: Jan 2007

Note Monday January 22, 2007 15:12 View thread in raw text format
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Anyone have problems with lack of heat?

Water pump, clutch-fan,thermostat replaced and OK.

Radiator hot on top, luke-warm bottom, no apparent scale/debris problems.

Heater core clean but runs cool, barely any heat.

Siuggestions?
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GoneFishen
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Note Monday January 22, 2007 20:22 View thread in raw text format
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Make sure that they sold you the correct thermostat. Check it against the old 'working' one. I have had to go to another source to get the correct thermostat. There are 2 styles for the 7.3 powerstroke, I am not real familiar with the 7.3 W/O turbo. The top hose should be 20* higher, in temperature than the lower hose. [general rule of thumb].

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DDA tech for 30 years,all 2 cycle,series 60,50 mbe also.
1995 F250, 191k mi.
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Snafoow
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Note Wednesday January 24, 2007 22:25 View thread in raw text format
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The radiator should be cold till the engine is up to operating temp. There should be no coolant circulation to the radiator until engine temp is reached.. Make sure the thermostat is not flowing coolant to the rad until the engine is up to temp. If it is not the thermostat or housing look for coolant hoses that may be routed wrong and circulating coolant back to the radiator.
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KENE4OD
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Joined: May 2007

Note Thursday May 03, 2007 19:50 View thread in raw text format
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first time out but maybe thermostat is in backwards, if the engine heat can't open the thermostat. and if it does, it only opens it slightly.

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