temperature on 89 7.3
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Senior User
Joined: Jul 2005
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temperature on 89 7.3
What is the normal operating temperature on the 7.3L? Mine has been running at 195 to just above 210. This seems intuitively like it is too hot, but I am not sure. I just replaced the thermostat and the water pump, and these are the readings I am getting after the fact. I also have a mechanical temp gauge I installed a few weeks ago.
Post Fiend
Joined: Nov 2004
Posts: 5,638
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From: Manitoba
Was the tsat a Ford or IH as required........
Diesel engine coolant temperature at the top of the radiator where hose attaches after high rpm or under load condition for 20 minutes should be (195-237*F) 91-114*C
Standard cautions when handling hot engine/coolant apply, nice time to have a temperature reading point and shoot tool.
Diesel engine coolant temperature at the top of the radiator where hose attaches after high rpm or under load condition for 20 minutes should be (195-237*F) 91-114*C
Standard cautions when handling hot engine/coolant apply, nice time to have a temperature reading point and shoot tool.
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Joined: Oct 2004
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Coupla months ago, I pretty much rebuilt my entire cooling system. First, I flushed it with some pretty heavy duty stuff I got at the International truck dealership. After flushing the flush with tap water, I drained the system and got busy. I replaced water pump, stat, fan clutch, radiator,radiator cap, heater core, belts and hoses. Refilled it with a 50/50 mix of Dex-Cool and distilled water. For the first few trips, the gauge would swing pretty high. First trip, it went about halfway; second trip, just past halfway; third trip it was over by the 'A' in NORMAL. I was getting pretty ticked - before I did all this, the gauge stayed around 'N'. Great. Progress. The next trip, the needle stayed at midpoint, and that's pretty much where it stays now. No more swings. Well, I've told you all that to tell you this: It'll take a few days and some driving to burp out all the small pockets of trapped air and get everything back to normal. Keep checking for leaks and keep watching your gauge. As long as you see no leaks and your coolant stays within the guidelines given by PLC, you'll be OK. BTW, the reason my initial temp readings were so low, was because the stat was stuck open.
