| [GMCnet] Tid Bit. Over heating. And still in the drive [message #341939] |
Sat, 23 March 2019 12:55  |
BobDunahugh
Messages: 2465
Registered: October 2010
Location: Cedar Rapids, IA
Karma: 11
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Senior Member |
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I just ran into this for the second time. The clutch for the fan wasn't pulling enough air in. To keep the engine coolent at it's proper level. First sign is when you start the engine. And there isn't much air coming from the engine fan. If you need a new clutch unit. DO NOT install a sever service duty clutch. As that one is for a larger fan. Thus it won't engage/disengage our fan properly. Bob Dunahugh 78 Royale Iowa
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| Re: [GMCnet] Tid Bit. Over heating. And still in the drive [message #341941 is a reply to message #341939] |
Sat, 23 March 2019 13:29  |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Senior Member |
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I have had multiple fan clutch failures. Both on the 455 and 403. One in
particular on a brand new engine, aluminum radiator, high zoot multi bladed
synthetic fan with custom shroud and "high performance" aluminum water
pump. That one I fixed on the road. "I don' wan to fix no steenkin cooling
system on the road !!" Most of the issues I have had were centered around
the actual fan clutch itself. My best advise, based on painful
experiences, is as follows:
"IF YOU HAVE A FAN CLUTCH THAT WORKS, USE IT. PAY FOR A WARRANTY OR
USE A HIGHLY TRUSTED VENDOR WHO STANDS BEHIND THEIR PRODUCTS. IF THEY ARE
LOCATED ON THE OTHER SIDE OF THE COUNTRY, DON'T BITCH ABOUT THE COST OF
FREIGHT. IT IS A MINIMAL EXPENSE, COMPARED TO FIXING IT ON THE ROAD. "
Jim Hupy
Salem, Or
78 GMC ROYALE 403
On Sat, Mar 23, 2019, 10:56 AM Bob Dunahugh via Gmclist <
gmclist@list.gmcnet.org> wrote:
> I just ran into this for the second time. The clutch for the fan wasn't
> pulling enough air in. To keep the engine coolent at it's proper level.
> First sign is when you start the engine. And there isn't much air coming
> from the engine fan. If you need a new clutch unit. DO NOT install a sever
> service duty clutch. As that one is for a larger fan. Thus it won't
> engage/disengage our fan properly. Bob Dunahugh 78 Royale Iowa
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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