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Old 08-13-2010, 02:48 PM
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coolant temp

where should my coolant temp gauge run at? i etheir have a bad gauge or a bad thermostat, first diesel don't know for shure. gauge will jump up when it moves, and it stops just before the n in normal, is this right?
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Old 08-13-2010, 02:58 PM
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On my 7.3 (it's an 01) it's usually between the "o" and the "r"
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Old 08-13-2010, 08:38 PM
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ive just bought a 94 and my gauge was acting up like that and i had to put a manual on mine, I would just go ahead and do it so it wont bother you anymore,, I had my dash thermsotat just laying to the side out there and my gauge still flutters, so i know it was the gauge now, manual you will know for sure
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Old 08-15-2010, 11:06 AM
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i realized it was my thermostat like twenty min. after i posted this. what is the best place to drain the entire system from, what additive should i use?
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Old 08-15-2010, 11:16 AM
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There's a pet**** on the bottom left of the radiator. Use caterpillar coolannt. Or mkotorcrraft diesel additive to reduce cavitation
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Old 08-15-2010, 07:31 PM
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to totally drain the system, open the valve on the radiator and let it drain, disconnect a heater hose and blow air through it to clear the heater core. Lastly, there is a block drain on each side of the block above the oil pan.
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Old 08-16-2010, 10:33 AM
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will the block not drain threw the radiator? i'm not worried about a coulple of quarts. where would i by the cat additive at? thanks for the advice
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Old 08-16-2010, 01:19 PM
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You might as well get all of the s!hit you can get out of it while you have it drained...I'm sure you'll have some stuff in there.
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Old 08-17-2010, 05:40 AM
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what will these block drains look like, and will i need to drain both sides?
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Old 08-18-2010, 01:50 AM
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if it were me, id drain it outta the valve on the bottom of the radiator, refill it with water, and run it for like 10 minutes, drain it again, fill with CATERPILLAR coolant, or prestone coolant and use the motorcraft diesel additive. if you use CAT, you dont need the additive
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