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Series 60 Engine Temps
Ok,
Newbie questions have begun! Bringing the bus home from Nashville yesterday, she ran like a striped ass ape carrying a sewing machine! And if your wondering that means it ran good! The engine temp ran from 195-207. Never been around a series 60 Detroit before so I don’t know how she should run on a cool day. This temp was from the guage on the dash. I am not sure if the Detroit readout give the engine temp or not. Radiator looks good and clean but I have not washed it yet. What do ya’ll think?
Steve
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3 Replies
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Thats what you should expect. They runner warmer on a cold day because the fan is not on. Have Fun!
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Your cooling system has a multi speed fan clutch. The range you describe is within the expected operating set points. The low speed fan cycles on at 204 and if it continues to climb the second speed kicks in at 208. If you are concerned find the steepest longest uphill road you can. Make sure it is at least 5 miles long and a 6% grade. Even longer and steeper is better.
Floor it and run up the hill like you stole the coach.
You should see the temps rise. But as soon as they reach 208 or thereabouts even with your foot planted on the gas pedal you should be able to see the needle drop down, maybe as far as 200 or less, at which point it will start cycling up again. And when it hits 208 it will start falling again.
What that tells you is your cooling system is doing exactly what it should, it tells you the radiator has the ability to cool under severe conditions, and it tells you your fan clutch is performing as it should. It is when the temps stay locked at a high temp and do not cycle up and down that it becomes time to look for potential problems.
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That is exactly what it would do….. up to about 207 then drop to 195… Back and forth.. Sounds like all is well with that !!
Thank you for the information !! More to follow I am sure!
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