d90 running cooler - Defender Source
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  #1  
Old January 19th, 2010, 06:11 PM
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kyle scheppler
1997/D-90 Station Wagon
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d90 running cooler

is it possible to get my engine running cooler?..it just runs really hot...expansion tank always overflowing like it's supposed to when it gets too hot but I'm sick of it...any ideas pertaining to running your engine cooler

can I perform surgery and alter the placement of my cool air intake to where it's taking in air directly from one of the vents on the hood?
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  #2  
Old January 19th, 2010, 06:14 PM
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shane cates
94 d90
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I'm really, really happy with my new setup. I posted it under the small projects section.
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  #3  
Old January 19th, 2010, 07:30 PM
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New radiator.
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  #4  
Old January 19th, 2010, 07:43 PM
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Phillip
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Registry
and head gaskets and thermostat
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  #5  
Old January 19th, 2010, 08:36 PM
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Scott
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I would have your radiator cored...and check your thermostat.
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  #6  
Old January 19th, 2010, 08:54 PM
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shane cates
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water pump also
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I love little country streams, sleep without dreams, sunday school in may,
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  #7  
Old January 19th, 2010, 09:22 PM
imeek
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Isaac
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I just had this problem, where my truck was running hot (always spewing it's guts from the expansion tank). It ended up being a head gasket (and partially blocked radiator). When you are doing a head gasket, as thermostat is cheap insurance.

Try out one of the hydrocarbon detection kits from autozone. That should tell you if it's head gasket time.
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  #8  
Old January 19th, 2010, 09:47 PM
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Chris Davis
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2nd hydrocarbon test. Easy, quick, and available at Napa as well. Usually in the $50 range.
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  #9  
Old January 20th, 2010, 02:34 PM
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kyle scheppler
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ok I'm gunna try the hydrocarbon test and figure out if it's the head gaskets...which it sounds like IRS gunna end up being from imeek
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  #10  
Old January 20th, 2010, 04:08 PM
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might as well start ordering parts. I had same issues in my CLassic new gaskets etc, no more bubbles.
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  #11  
Old January 20th, 2010, 04:57 PM
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Eric Lindstrom
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Might also be the fan clutch.
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  #12  
Old January 20th, 2010, 09:25 PM
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shane cates
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Quote:
Originally Posted by Lindy View Post
Might also be the fan clutch.

I have an extra one of those if needed.
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  #13  
Old February 1st, 2010, 02:12 PM
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kyle scheppler
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How would i check if its the fan clutch? where is that located on the truck...im not sure I know what that is
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  #14  
Old February 1st, 2010, 02:24 PM
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the fan clutch is what the fan mounts onto, it is mounted to the water pump. i think its like a 1/1-4 nut.
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  #15  
Old February 1st, 2010, 10:07 PM
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Julien Dalbin
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32 mm will work also, and very thin.
You can get one on eBay for 10$.
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  #16  
Old February 2nd, 2010, 12:15 AM
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Jay Goss
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You've probably already checked this- and I doubt it would cause the problems you're having to the extent that you're having them, but make sure your radiator fins aren't covered in dust/dirt/crud. I recently took mine through some stuff and noticed it was running a bit hotter than normal (no excess in the overflow tank- just a little hotter on the gauge). When I was checking things out I noticed the radiator had a light brown color from the dust/dirt that was a result of my exploits. It wasn't really apparent at first- and didn't jump out at me as being blatantly filthy. I sprayed down the radiator- front and rear with a low pressure stream until it was clean. The temp gauge is now indicating the normal heat level when it reaches operating temp.

Again- I'm sure you probably have already checked this...and there are probably a lot of people saying, "duh...who brought the cool kid" when they read this...but I thought I'd mention it in case it saves you some of your hard earned $. Hope it's a simple, cheap fix for you. Good luck.
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  #17  
Old February 2nd, 2010, 12:55 AM
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Don't forget, fan clutch is reverse-threaded.
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  #18  
Old February 2nd, 2010, 09:30 AM
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I didnt think it was on the serpentine trucks.
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