rough when first started and overheats!!!!!!!!

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Apr 16, 2002 | 08:34 PM

79_ford_400_guy

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From: Salem USA

rough when first started and overheats!!!!!!!!

hi i was just wandering if anyone could please help me out i live in SD and its getting warm and every time i start it in the morning when its cool it keeps killing and taked forever to warm up and when its nice and warm out it overheats if yur not driving down the road fast and getting air in there so i was wondering if it would be the thermostat????? all help is apreciated keving ross

Apr 16, 2002 | 09:10 PM

Mil1ion

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rough when first started and overheats!!!!!!!!

[updated:LAST EDITED ON 16-Apr-02 AT 10:12 PM (EST)]It is an in-expensive test to find out.

Remove the thermostat and bench test it by putting it in a pot of warm water on the stove burner on ,with a candy thermometer to check the temperature the stat opens.
If it doesn't open at the temp it has stamped on it >
Make sure you don't replace it with any stat less than 180*F

The cold start/run problem is your choke linkage needs adjusting.

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Apr 17, 2002 | 12:17 AM

dfisher1

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From: Gainesville, FL

rough when first started and overheats!!!!!!!!

79,
It sounds like the thermostat may already be out. You probably need a new radiator.
When was the last time you changed your tranny fluid? An automatic trans can contribute to alot of the heat your radiator sees. This can be lightened by keeping your fluid/filter changed.
Consider it.
KingFisher

Apr 18, 2002 | 10:01 PM

porchpiggy

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Joined: Oct 2001

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rough when first started and overheats!!!!!!!!

A non functioning fan clutch could be contributing to the overheating. On a warm day, grab your fan and spin it (with the engine off of course) if it spins more than 1/4 to 1/2 turn it prob needs replaced. This would apply only to the problem of overheating unless your zooming down the road. On the other hand,I have found that 90% of the time, if you consistantly overheat it's from a clogged radiator.

Apr 19, 2002 | 09:57 AM

brents

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Joined: Apr 2001

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rough when first started and overheats!!!!!!!!

Hey,

Some other things to look at, is the fan shroud in place? (IE not missing?)

How old is the waterpump?

When was the coolant last changed?

Is there any obvious vacuum leak? This could cause the overheating too.

Just some ideas to try,
-Brents

Apr 19, 2002 | 12:22 PM

dfisher1

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Joined: Jul 2001

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From: Gainesville, FL

rough when first started and overheats!!!!!!!!

Brents,
Getting some mechanical expertise under your belt? Owning a Ford truck will do that to you. Did you get those headers on?
KingFisher

Apr 19, 2002 | 12:41 PM

brents

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Joined: Apr 2001

Posts: 321

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rough when first started and overheats!!!!!!!!

Hi Kingfisher,

I am slowly getting some experience, but I have not installed any headers on my truck?

I think you may be confusing me with someone else?

Thanks for the nice complement though...

-Brents