Still running cool

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Dec 25, 2008 | 01:13 PM

#16

sticks25

Senior User

Joined: Dec 2006

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i have a friend with a 85 6.9 looking at thermostat choices as his needs replaced. its averaging 10 degreese here in north idaho. is a 203 thermostat a good option for him? we have talked about putting a winter front on his truck as well. he does alot of interstate travel

Dec 25, 2008 | 03:08 PM

#17

Dave Sponaugle

Post Fiend

Joined: Nov 2003

Posts: 21,285

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From: Nutter Fort, WV

Get the thermostat at Ford or International only, I believe they only have 195 degree thermostats though.

Dec 29, 2008 | 01:53 PM

#18

jmmartin

Thread Starter

Elder User

Joined: Dec 2007

Posts: 854

Likes: 0

From: woodville, tx

ok, splurged lastnight at sears for a lazer thermo. After 9 miles at 60-65 the top of the radiator is at 185-190 upper hose shows 140 lower hose 95 exhaust pipe about 225 on all sides. this was about 1-2 minutes after setting the parking break.

Dec 29, 2008 | 02:28 PM

#19

starmilt

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Joined: Oct 2007

Posts: 10,501

Likes: 5

From: Faibanks Ak.

Those temps are good.
I just changed my thermostat bought the new one from international I believe.
Reason for changing motor was running too cool thermostat turned out to be broke and staying open. After changing it would idle at around 170 highway 190 195 empty going by my manual guage.

Dec 29, 2008 | 05:57 PM

#20

jmmartin

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Elder User

Joined: Dec 2007

Posts: 854

Likes: 0

From: woodville, tx

hey star the gauge still shows about 140-150 tops

Dec 29, 2008 | 07:12 PM

#21

starmilt

Post Fiend

Joined: Oct 2007

Posts: 10,501

Likes: 5

From: Faibanks Ak.

What kind of guage are you using.

Dec 29, 2008 | 07:18 PM

#22

starmilt

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Joined: Oct 2007

Posts: 10,501

Likes: 5

From: Faibanks Ak.

I shoud have reread the thread I see you have an aftermarket guage I would think your guage is wrong. I'm thinking you should be reading at least as the top of the radiator.

Dec 29, 2008 | 07:56 PM

#23

dyoungen

Posting Guru

Joined: Aug 2006

Posts: 1,049

Likes: 0

From: Perry Georgia

I thought I was having coolant problems and the gage was the problem the whole time. Installed an aftermarket gage and saw what the temp realy was. No more problem.

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Dec 30, 2008 | 09:18 AM

#24

jmmartin

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Elder User

Joined: Dec 2007

Posts: 854

Likes: 0

From: woodville, tx

its a brand new aftermarket, surely it wouldnt have been bad from the get-go

Dec 30, 2008 | 09:41 AM

#25

fonefiddy

Cargo Master

Joined: Nov 2003

Posts: 2,585

Likes: 1

From: Duluth, Mn.

I've seen bad NEW thermostats lots of times.

If Your having cooling/heat probs. OEM is the only way to go.

My 85 will cook You out of the cab @ -25F and No winter front