Cooling trouble
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Joined: Feb 2013
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Cooling trouble
I've an '85 f-250 with the inline 6 engine in it. Temerature guage runs ...randomly high in it at times. I've replaced thermostat, waterpump, and fan clutch (though none really showed signs of wear), the problem remains. When temperature guage is running hot, it doesn't seem that fan clutch is engaging to fully spin the fan. I'm wondering, is it possible I have a bad temp sending unit, if so, is there a way to verify/test? Also, the truck has no fan shroud, so, i'm wondering if all that open air between the radiator and the fan is preventing the fan from engaging or being useful. Thoughts and advice are hugely appreciated, thanks all.
Fleet Mechanic
Joined: Aug 2002
Posts: 1,563
Likes: 33
From: Swansea SC
Pcally. i have a 1985 f150 and yes to the shroud , my gauge used to run high untill i replaced the fan/clutch. a shroud is really needed to force air into the radiator to cool,the actual switch that measures heat is located on the rear passenger side of motor(below the manifold) further back towards the firewall.Up where the hose enters the block ,that hookup is for the computer (sends signal) for control management. Hope this helps , TR
Posting Guru
Joined: May 2007
Posts: 1,208
Likes: 2
From: North Reading Mass
Yes, your truck did have a fan shroud and if its missing it can cause problems, especially at low speeds.
I've had two Ford fan clutches fail both by not engaging. On one I replaced it with a new clutch and the other I used a dual electric fan from the JY.
Regards
rikard
I've had two Ford fan clutches fail both by not engaging. On one I replaced it with a new clutch and the other I used a dual electric fan from the JY.
Regards
rikard
Mountain Pass
Joined: Jun 2004
Posts: 117
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My 85' came with a single core and a guard that crossed the top of the rad.
Pulled may loads well over its rated limit at 15mph or less and never had issues.
85 F150 XL 3spd od (4spd really) 3.55's
I'd try a new sending unit for the gauge and see
Pulled may loads well over its rated limit at 15mph or less and never had issues.
85 F150 XL 3spd od (4spd really) 3.55's
I'd try a new sending unit for the gauge and see
Postmaster
Joined: Dec 2006
Posts: 3,603
Likes: 10
From: Spokane, WA
"My 85' came with a single core and a guard that crossed the top of the rad." Yup, my '83 did also and it's not really a shroud but a guard like Joe C says. Mine was removed eons ago with no difference in cooling performance.That 'guard' does between none and none whatsoever for the cooling.
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Mountain Pass
Joined: Jun 2004
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Does it do it when its first warming up or all the time?
i had a similar issue that was while it initially warmed up, turned out to be i put the t-stat in backwards
just an image grabbed from Google, but its the same style. The end to the left should face the rear of the engine
i had a similar issue that was while it initially warmed up, turned out to be i put the t-stat in backwards
just an image grabbed from Google, but its the same style. The end to the left should face the rear of the engine
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