Over heating troubleshooting.

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Dec 17, 2017 | 05:46 PM

Egyptian Pharoh

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Over heating troubleshooting.

Hello I have a f350 460 engine that has been stalling on the highway on me. It dies and then 45 mins later starts right back up. Initially I switched out the ignition coil out and checked wiring. After same thing happening. I then noticed temperature rising I did a radiator flush. My coolant chamber was still getting extremely hot and all hoses leading out of the thermostat were hot. I switched out the thermostat sealed everything back up and notice a leak on back side of the housing. In process of getting the housing off I broke the dual Ported Vacuum switch so I have that coming on order in a couple days. I have already reinstalled a new housing unit and repaired the leak. I glued the broken piece of the vacuum switch together I drove it down the street a few block to put gas in it. It is still overheating and the best looks like it is building from below the housing unit and thermostat. Could this be because I have not installed the new Ported Vacuum switch? Any other troubleshooting advice will be greatly appreciated! Thanks!

Dec 17, 2017 | 07:44 PM

Filthy Beast

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From: Taxachusetts

Lets hit one problem at a time, ok?

What year is yer rig?

The overheating issue - how's yer water pump looking? If you pull the radiator cap while she's runnin' can you see the flow of coolant?
Have you heat inside the cab when you turn the heater on?
Are you losing coolant?

Is the "stalling" a result of the engine temperature being too high?

Dec 17, 2017 | 08:17 PM

Egyptian Pharoh

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Year of vehicle

It's a 1980 f350 with a 460 in it.

Dec 18, 2017 | 01:23 AM

Ozzie H.

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From: S.E. Louisiana;so far USA

Quote:

Originally Posted by Egyptian Pharoh

As mentioned, try to resolve one shortfall at a time. At the time that it stops on the highway, try to see what's missing. Is there fuel in the carburetor? Is there a spark at the spark plugs? Usually one of these will be missing. Then narrow it down to determine the real problem without blindly "throwing" new parts at it. Sometime the ignition module will stop working when hot and then recover after cooling.

Dec 18, 2017 | 12:26 PM

NumberDummy

Ford Parts Specialist

Joined: Nov 2006

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From: Simi Valley, CA

Quote:

Originally Posted by Egyptian Pharoh

It's a 1980

F350 with a 460

in it.

Are you sure it's a 1980? 460's were not available in 1980/82 F250/350's, reintroduced in 1983.

And, if it is a 1980, you've asked this question in the wrong forum. You need to ask questions in the 1980/86 forum.

Dec 18, 2017 | 02:08 PM

mark a.

Lead Driver

Joined: Mar 2004

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When it's running and hot, run your hand across the core to see if there are cool spots. If there are cool areas in the core take it to a shop and have them rod it out.