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Old 06-20-2017, 02:10 PM   #25
demian5
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Location: Lake Forest, CA
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Re: Mishimoto Electric Fans in Your 67-72 C10?

Quote:
Originally Posted by mosel70 View Post
New fans did not solve the overheating issue. With needle in mid-red (new gauge/sensor), upper T-stat hose 208 degrees and lower rad hose 217 degrees and it starts idling rough . I'll recheck all timing next and post results.
Random observations and thoughts:
I see no mention of the installed t stat temp or if you even have one, or just a restrictor. The coolant needs to stay in the radiator long enough to cool it down. I like a good 180 in my older vehicles. 195 in newer stuff.
Is it bubbling over when you turn it off?
What temp does it run at speed on the road?
Does it ping under acceleration? (if timing is too advanced, it should sound like marbles in a glass jar under even light accel).
Does it diesel when you turn it off?
is the water pump good?
Do you have something blocking your air flow?
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