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cooling system nightmare!!!!!! help please!!!!

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Old Apr 1, 2011 | 01:41 PM
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palmettotiger1
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cooling system nightmare!!!!!! help please!!!!
i have a 351m in my 1989 f350. ever since i got it which is about 6months ago. wen i take her out she runs hot. i start her up go play around in the mudd and cruise and stuff and then about 10 - 15 mins later shes hot. i changed the thermostat to a 180 degree but still ran hot. i believe the water pump work because i have watched the water in the radiator being pumped. i rly want to get this fixed so i can ran her more than just 10 mintues if anyone can help i would greatly apperciate it!
 
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Old Apr 1, 2011 | 01:52 PM
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86F150302
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Put the stock thermostat back in.

Fan clutch good?
 
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Old Apr 1, 2011 | 02:18 PM
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stock thermostat had all the guts taken out of it. i was thinkin maybe the fan cltuch but how would u knw if it was bad or good?
 
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Old Apr 1, 2011 | 04:50 PM
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Eddiec1564
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A plugged radiator can cause over heating too. Is the coolant over flow bubbling when its over heating?
 
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Old Apr 1, 2011 | 04:57 PM
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What Eddiec1564 said,if it's plugged a Radiator shop can rod it out for you to improve the flow. also you can normally hear a fan running when the fan clutch is engaged mine sounds like an airplane taking off,hard to miss.
 
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Old Apr 1, 2011 | 05:31 PM
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Ohio Ford Farm
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Is the fan shroud on?

Its a 351M or a 351W?


I had a 390 in a 76 F100 years ago. Without the fan shroud it would over heat not matter what you tried to do.
 
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Old Apr 1, 2011 | 07:36 PM
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Is it boiling over or just the gauge reading high? The gauge could be wrong.
 
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Old Apr 1, 2011 | 09:03 PM
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Is it smoking? Head gasket possibility?
 
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Old Apr 2, 2011 | 07:12 AM
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no smoke. it does bubble when it get hot. fan shroud does look a lil little but how do i tell? how do i tell if the fan clutch is bad? and yes it is a 351m it does have a engine swap
 
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Old Apr 2, 2011 | 10:14 AM
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Regarding fan clutch operation a symptom I get when it's not working is overheating especially when towing,and as stated above the fan can be heard when it is engaged it moves a lot of air.in my experiance they don't seem to last long either.
 
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Old Apr 2, 2011 | 02:00 PM
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i dont think its good then so i think i may start there with repairs. do u knw where i can find parts for my old engine though?
 
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Old Apr 2, 2011 | 02:11 PM
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Rockauto.com is good and I've tried off brands before in the intrest of saving a buck but nothing functions as well as the Motorcraft brand.
 
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