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  #1  
Old January 22nd, 2008, 06:28 PM
Andrew Vick
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Misting on the inside

I just drove up the hill to pick up my daughter, and all of the glass on the inside of the truck instantly fogged for no apparent reason. I may have imagined it, but there seemed to be a slight smell of coolant. I'll check the level when it cools down, but I checked all of the hoses and there are no leaks.

I cleaned it off, and it was fine on the way back. Temp gauge was fine, heater still blows hot.
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  #2  
Old January 22nd, 2008, 06:53 PM
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Quote:
Originally Posted by Andrew Vick
I just drove up the hill to pick up my daughter, and all of the glass on the inside of the truck instantly fogged for no apparent reason. I may have imagined it, but there seemed to be a slight smell of coolant. I'll check the level when it cools down, but I checked all of the hoses and there are no leaks.

I cleaned it off, and it was fine on the way back. Temp gauge was fine, heater still blows hot.
It is likely that the heater fan pulled some water from the wing air intake bowl. If the drain cock in the bottom of this bowl becomes clogged with dirt it does not allow water (that enters via the wing vent) to drain and it accumulates in the bowl. If you drive up hill it is likely that the water was atomized by the fan (blower for the heater and fresh air) and blown into and onto the windows. This has happened to me once as well. The rubber drain cock is easy to clean. Just remove the vent from the wintop, put your hand into the bowl then run your finger, screw driver or other prodding tool through the clogged drain cock. The water will drain nicely. Some people remove this drain cock. I just clipped it with some sizzors to ensure it never clogs up again.
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Old January 22nd, 2008, 07:36 PM
Andrew Vick
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Awesome feedback. I'll go check it. It snowed about 3" yesterday while at work, so it probably just sat in there until today.

Follow-up Post:

That was quick. There's no drain cock there, so I'm thinking all the water I was driving through got sucked in. Slight coolant smell as the reservoir is right above that, and there has no doubt been coolant splashed on that wheel well.
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Old January 22nd, 2008, 08:51 PM
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Slight coolant smell
could be your heater matrix is leaking, thats what happend to mine
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Old January 22nd, 2008, 09:02 PM
Andrew Vick
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Quote:
Originally Posted by jimmy salmon
Slight coolant smell
could be your heater matrix is leaking, thats what happend to mine
Could you see it in the engine bay? Drips to the floor?

Thanks for the replies.
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Old January 23rd, 2008, 06:09 AM
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Quote:
Originally Posted by Andrew Vick
Could you see it in the engine bay? Drips to the floor?

Thanks for the replies.
nope, the leak was small but enough to smell the cooland and fog the windshield and took about a month before i noticed a drop in cooland.
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Old January 23rd, 2008, 09:42 AM
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Andrew Najarian
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Yeah, I would check the heater core. When the one in my old Blazer went the windows just stayed fogged and I had to keep wiping the inside of the windscreen to be able to see out.
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Old January 23rd, 2008, 11:21 AM
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10-4. The heater core shat the bed this morning. Thanks for the direction
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  #9  
Old January 23rd, 2008, 12:04 PM
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Its not expensive, just irritating to replace. The hood has to come off first - and you need to move the washer bottle.

In the pix, you can kind of see how its done. Since you need three hands most of the time, it was hard to take more pix.

It kind of looks like if you take off the top plate (pointed to by the scewdriver) then the core will slide right out - not so! There is another plate just like this on the bottom that prevents this. Remove all the mounting bolts, and finesse the heater box up and out of the truck, you have to rotate it a bit. Dont worry about draining the cooling system, just reach over, grab the two hoses, and snap them off the core, leaving the plastic pieces in the end of the hoses, elevate these quickly to minimize coolant loss. If you want, you can plug the core, or better yet, just dump coolant all over the engine compartment as you try and get the box out.

Once out, the replacement is pretty straight forward, but you'll want to buy some foam weather stripping because the stuff in your box will be crap. Just get a roll of the black/grey adhesive stuff at home depot - I think I used the half-inch stuff. Clean the inside of the box really well so that it will stick, and then use some thin cardboad to assist getting the core down inside without ripping up the foam.

Buy new heater hoses too, since you might not be able to re-use the ones you have. I think thats about it.
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  #10  
Old January 23rd, 2008, 12:37 PM
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"just dump coolant all over the engine compartment as you try and get the box out" - I agree, there is nothing like the smell of engine coolant in the morning...it is the smell of Victory!
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Old January 23rd, 2008, 04:04 PM
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Same happened to me a couple of years ago. Thankfully I live in Florida and just disconnected the heater all together. No A/C, might as well have no heat...
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  #12  
Old January 23rd, 2008, 04:38 PM
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When I read, "Misting on the inside", my first thought jumped to that "crying on the inside kind of clown" saying. Then I thought this will thread will lead to something about replacing the heater core. The clown thought reappeared, only it was that clown from the Stephen King book.
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Old January 23rd, 2008, 06:17 PM
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Jim: That information is perfect! Thank you!

Robert: Put the bong down. Slowly back away.
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Old January 23rd, 2008, 07:34 PM
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Quote:
Originally Posted by Andrew Vick

Robert: Put the bong down. Slowly back away.

Just wait until you have AC troubles. The part search odyssey could be the background story for another King book.
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Old January 24th, 2008, 06:47 AM
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LOL. I mitigated my losses there by selling the AC a year ago. Not much need here, but heat while being able to see would be nice. Picking up a core and hoses in Denver today, weekend project.
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Old January 24th, 2008, 07:13 AM
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It'll only take you a couple hours. Good luck, take pix so we can see how miserable you are!
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  #17  
Old January 26th, 2008, 08:27 PM
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Done! Not that bad, and replaced all the hoses at the same time. Also got 5 hours in at Highlands.
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  #18  
Old February 4th, 2008, 07:47 PM
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Funny, this just happened to me with the exact same symptoms. I noticed a slight misting of the windshield on the way to to visit Doug Crowther and check out his 110's. Just before I headed home, Doug jumped in to run to the hardware store and told me he smelled anti-freeze. I keep some in the back, so dismissed that too. By the time we got to the hardware store the misting was very evident and the leak was not very noticeable in the engine bay. Doug advised I bypass it, and I did just that. Other than a bit chilly of a ride home, all was well!

Time to find a RHD heater box!.

charles
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  #19  
Old February 5th, 2008, 06:37 AM
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There were 2 different types available through World Pac. Mine, and most D90's (LHD) use the one with the horizontal inlet and outlet. The other one has vertical ports, which I would assume point down. Might that be the one you need?
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  #20  
Old February 5th, 2008, 07:11 AM
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I don't have a world pac account, but autopartswarehouse.com lists the same two variants fro the cores. Yes the 110 inlet/outlet point down on the 110, and the heater boxes look the same otherwise so that should be fine (waiting to hear back from george first though).

If you don't mind me asking, what did you pay at world pac? It's $168 for the downward facing at autopartswarehouse.com.

charles
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