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Discussion Starter #1
I recently drove several miles in some very fine, powdery snow and it actually plugged up my air filter bad enough that I couldn't go over 15-20 mph. Truck was blowing black smoke like crazy. I limped it home and thawed it out. Now its fine. My question is why a check engine light or some other warning light never appeared? The restriction guage was completely maxed out and the truck barely ran. I would have surely thought that this would have made some kind of warning light come on. I have suspected for some time that the intake air temp sensor isn't working right. Could that have something to do with this?
 

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The sensor sits behind the filter and wouldn't throw a code because it doesn't sense pressure jsut temp. Freezing the filter is just like having a dirty one.
 

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Discussion Starter #3
As electronic as these things are now days, I still can't believe it didn't make some kind of warning light come on. My old powerstroke did the same thing several years ago and it made the check engine light come on and a light for the air filter in the instrument cluster.
 

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My 10 did this this morning in a fine powder snow. I got a light that said service air filter but i wasn't trying to drive fast because the snow was bumper deep. I pulled it when I got to work and could get it inside and replaced the filter and built a deflector from the grill intake out of cardboard to try and stop the direct snow.
 

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Did not noice your pyro spike? I had PDA w/ 6 gun. Did same thing soon after install. No check engine light. Banks alarm went off as soon as I hit the highway. Looked over & seen 1650F, backed off & limped it to town. Air filter was plugged solid & collapsed. I like to think Banks saved my motor that day & paid for itself right then & there.
 

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It is allways possible to plug the filter with snow. I noted the RanchHand in your sig. Is that a front bumper? Many people have had problems with the aftermarket front bumpers directing snow and rain into the air filter.
 

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As electronic as these things are now days, I still can't believe it didn't make some kind of warning light come on. My old powerstroke did the same thing several years ago and it made the check engine light come on and a light for the air filter in the instrument cluster.
That's why they put that fancy yellow gauge on the filter lid.
 

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Looks like you have the PSM mod out the bottom of your air intake? If so, snow is one of the main reason's I built my own (cost is another huge one), and put a threaded sleeve on the bottom so I can plug it in the winter.



 

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I run into filter plugging quite often with the stock air box and High efficacy mopar air filter, and still haven't thrown a code? Just keep a eye on the filter minder after your in snow. The first time i noticed it i thought the turbo was a bit quiet so i had a look under the hood and sure enough it was in the red!
The best way i found to unplug the filter is to just take the whole air box off and into some were warm to thaw out. Typically when your filter is plugged you cant pull the filter out at all because its actually froze to the air box.
 

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to prevent fine snow from reaching air box, put a couple pieces of aluminum window screening over air box feed holes.
i put it in every year when i head over to Montana for the late hunts in snow and blizzards. saves messing with the filter, just pull the screening out and thaw,dry hit the road again. also keeps alot of the mud spray out of the air box.

will not prevent water slush road spray from going into the air filter, freezing and plugging it. water that freezes in the air filter destroys it by expansion tearing the media.
 

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Discussion Starter #11
I plugged the PSM hole and that made it worse. It's trying to suck all that air through one hole instead of two, so there is more of a vacuum effect. I put a pre filter sock like one you would use on those open element K&N filters over the end of the PSM tube and that helped a lot. It can still suck air through there but snow can't get through. I tried putting some window screen in the stock intake hole, but fine powder still got in and restricted the filter. Window screen is not nearly as fine as the pre filter sock. I might order another one and try to make that work. I know for sure that the aftermarket bumper is the main culprit. There is a big open space behind the bumper and in front of the tire that goes right up to the intake opening. If you lay under it, you can look right up into it. I'm trying to figure out a baffle or something to fasten under there to deflect the snow/water from going right up and in. It's gotten to be quite a headache. We've had a lot of snow this winter with big drifts on the roads. I've plugged up the filter over a half a dozen times this winter and we still have a ways to go.
 

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plowing is the worst for plugging the air filter

the big freeway and hwy. 10 ton plows have went to a cab roof mounted air intake for their big CATS. they can't afford the down time unplugging the air filter every hour.
 
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