6.4 thermostat replacement?

[lhsnbsaoa]

This spring I have a long list of things to do to my 6.4:
-egr delete
-intake elbow
-intercooler boots
-intercooler pipe
- coolant filter
-transmission filter (maybe??)
-coolant flush

My question is should I replace my thermostat while I'm in there? If so where is it and how hard is it to replace? Also should I do the motor craft part or an aftermarket? Thanks for any advice.


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[reighnman]

The tstats are a pain to replace because the housing is trapped behind the vertical egr cooler, but can still be squeezed out.. just will take time to get out and put back in. If you do the egr delete at the same time then it would be no problem and they are only $20-$30 online at RA (motorcraft).

[lhsnbsaoa]

Well as far as I know there is nothing wrong with mine but should I go ahead and replace it while I'm in there? Especially if it's a pain. I replaced one on the side f the road on my 7.3 and that was no fun. Id rather replace it before it goes bad. Does that make sense or am I over worrying?


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[lhsnbsaoa]

Any opinions on this??


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[CT9AIX]

If your doing an EGR delete, as you mentioned above, then doing your thermostats is very easy. I did mine also when I did my EGR delete. Only thing would be is how many miles on the truck? Might not really need it if you have low miles?

[lhsnbsaoa]

I'm at 140,000 miles now. I'm assuming it's the original thermostat. Also going I do a full coolant flush with adding the cat elc coolant when I'm done.


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[strokin07]

Yes I would say @ 140k you should replace while you working in the area. I did mine about three weeks ago. Not that hard. There about $44 @ Ford.

I had 130k when mine took a dump.

[CT9AIX]

Yeah the 2 thermostats and gasket for the housing come as a kit for around $50. I did mine around 120k.

[sinner6.0L]

definitely do them, 6.4 thermostats fail in several different manners

since you're already taking out the vertical cooler all you have to take out is the lower bracket and the thermostat housing will come right out

[lhsnbsaoa]

Sounds good! I'm gonna head up to the dealership soon to grab the parts! Thanks!


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