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Water Pump Explosion, KINDA

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Old Jul 19, 2011 | 07:07 PM
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Exclamation Water Pump Explosion, KINDA

OK, so here we go again.... F350 with a 7.3, water pump blew water every where, no biggy, replaced it, fan clutch was fun to get off, refilled it with antifreeze. After which now my temp gauge starts out at the red line on the H and goes even higher and of course my engine light is on, I think I still have air in my system but not quite sure how to get anymore antifreeze in there when it's basically full at the radiator. I guess my question is what are the odds the thermostat is stuck, got one just in case, also got a new sensor for the temp gauge but can't find it on the motor so guessing the kid got the wrong one, did find a few others. One was unplugged and after plugging it back in my gauge read even higher.

Also ended up driving it home which was about 18 miles after I changed the pump, kept stopping and checking it, was running fine and no hotter than normal. SO what gives? Any thoughts???
 
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Old Jul 19, 2011 | 07:59 PM
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What year truck, not sure that matters on the 7.3. I just did mine, i did replace the t-stat, and the temp gauge hooked in on top of the water pump. did you use new coolant? did you check to make you used the same bolts that came out.
 
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Old Jul 19, 2011 | 08:43 PM
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It's a '91 F350 with the 7.3 IDI pre power stroke, all the bolts went in the same place they came out of and yes used new coolant, t-stat gets replaced in the morning. As far as mine goes on the gauge, nothing on top of the water pump, but I have one next to the t-stat, one in the block next to the timing chain and one in the head on the drivers side, also it would appear there is one I haven't found yet since I unplugged all 3 and the gauge went down but not where it normally rides, so will check it in the morning and see if it still shows Hot. I figure if it does one if not all may need to be replaced.
 
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Old Jul 19, 2011 | 09:50 PM
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As long as everything went back where it came from there is no reason your gauge should not read correctly. did your truck overheat when the water pump went out. if so it is possible that you cooked the sending units for the gauge and now they are no good.
 
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Old Jul 19, 2011 | 10:07 PM
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Oh and use the FORD/NAVISTAR thermostat ONLY, or else you will overheat
 
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Old Jul 19, 2011 | 11:04 PM
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Well it over heated a bit, tested 2 sensors and they are shot so I'm just going to figure on changing them all.
 
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Old Jul 20, 2011 | 12:01 AM
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The temperature sending units are thermisters. The system works from the total resistance. It sounds like you have a bad connection.

 
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Old Jul 20, 2011 | 06:20 AM
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make sure you only use a ford or intrnational thermostat. the aftermarket t-stats parts stores sell do not work in our engines.
 
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Old Jul 20, 2011 | 09:03 AM
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Originally Posted by tjc transport
make sure you only use a ford or intrnational thermostat. the aftermarket t-stats parts stores sell do not work in our engines.


In a pinch I use the Mr gasket thermostats! They look 100% the same as stock and are a balanced thermostat. Never had an issue with them Amazon.com: Mr. Gasket 4365 High Performance Thermostat: Automotive
 
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Old Jul 20, 2011 | 10:44 AM
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if you say so, but i have never heard of anyone else that had any luck with any aftermarket T-stats, even stant which is supposed to be the best.
i know of 6 engines that were heat seized because of aftermarket t-stats.
that is enough for me to use only ford or international parts.
there are some things i just refuse to use to save a few dollars on.
 
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Old Jul 20, 2011 | 11:04 AM
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Originally Posted by tjc transport
if you say so, but i have never heard of anyone else that had any luck with any aftermarket T-stats, even stant which is supposed to be the best.
i know of 6 engines that were heat seized because of aftermarket t-stats.
that is enough for me to use only ford or international parts.
there are some things i just refuse to use to save a few dollars on.

I understand what you are saying But in a pinch I would run a mr gasket unit over a stant!!! The Mr Gasket is identical to the original as it is a balanced flow design unlike the parts counter replacements which are simply a open/closed design.
 
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