69 f250 overheating

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May 7, 2000 | 07:02 PM

TYTY

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69 f250 overheating

I have a 69 f250 ranger with 360
It runs good but when I pull my boat it overheats
the engine & trans have been rebiuld
I have flushed the radator,changed the water pump
& changed the therostat.please help

May 7, 2000 | 08:37 PM

jbhf250

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Joined: Oct 1999

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From: Kelseyville USA

69 f250 overheating

Do you mean `boil over` or just gets a little hotter! what thermostat do you have in it? try the next one down like 180 or so. pulling a load like a boat will cause things to go up in temp. 220 to 230 is critical temp. 50/50 coolant mix is good for 265 deg with a 15 lb cap...
BUT thats not saying its good for the engine and trans!!!

__JOHN__Õ¿ö
72 F-250
ICQ#6030753
http://clubs.excite.com/72FORD-F-250

May 8, 2000 | 06:27 PM

TYTY

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69 f250 overheating

thanks john,
It gets hot to the point were it cuts off
I think I have a 190 deg therostat
I have a 12lb cap & 50/50 mix

May 9, 2000 | 10:39 AM

Chuck71

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69 f250 overheating

I agree with John about using a cooler t-stat. Also, if you pull that boat fairly often you really should get a transmission cooler, and possibly even an oil cooler.

Chuck
'71 F-250 390 C-6

May 9, 2000 | 06:27 PM

TYTY

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69 f250 overheating

thanks john & chuck
I will try a 180 deg threostat
the trans is is hooked up to the radator
I will look into a oil cooler were is the best
price on a oil cooler I live in SC napa
advance auto are the parts places we have

May 9, 2000 | 06:54 PM

DBF

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69 f250 overheating

Tyty One other thing that you should have, is an overflow tank, after a couple of trips around town you can lose enough water to run hot. It's cured overheating on a couple of the 390 I've had in the past.
Jim

May 9, 2000 | 07:59 PM

dave186

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69 f250 overheating

I have a 390 that I have been trying to get to run a bit cooler. If I took an overflow bottle off of a junk car, would I just hook it up to the overflow tube?

Dave

http://www.davesmonsterpit.com

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May 11, 2000 | 08:30 AM

72F250

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69 f250 overheating

I run two 72 F250's and tow trailers every day. If your not boiling the water out then it cannot get hot enough to hurt the engine. In fact the warmer the engine the less wear will happen. Case in point is that outer cylinders on both banks will always show more wear upon tear down. This is because they run cooler than the inner cylinders.

Make sure you have a fan shroud and a good original equipment fan for an FE V-8 engine.

May 11, 2000 | 10:31 PM

#10

FORDTRUCKMAN1976

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69 f250 overheating

are you using a fan shroud? did you get the engine bored when you rebuilt it?

Jun 1, 2000 | 07:22 AM

#11

muddogsrule

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69 f250 overheating

I have a '75 F250 4X4 that runs hot when loaded. The original guage is still hooked up and on a hot day the needle will run all the way up to the point where you'd think it should be blowing staem, but it doesn't. The radiator never loses any fluid and the motor runs fine. I'm going to put in a mechanical guage to see what the temp actually is. Another thing I heard from a mechanic is that the bypass between the water pump and the intake manifold is often the culprit for overheating in the summer and overcooling in the winter. His theory was that the temp wasn't being controlled be the thermostat because the coolant was always running straight back into the motor without first circulating through the radiator enough to cool it, or to heat it up. Interesting theory.