'99 & up 7.3L Power Stroke Engine and DrivetrainDiscussion of the 99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.
Just a heads up on a possible winter situation. The air filter clogged with snow yesterday in my 2001 Excursion. (I don't remember the name for the upgraded air filter, AIS I think.) The symptoms were no power and a rough running engine. I'd driven for a couple of hours in blowing ice crystals that ended up clogging all the little inlets of the filter. The housing itself had some snow in it, but the inlets all had blockages which is what I think caused the issue. I had limped to an interstate rest stop to evaluate options and was able to use the hand dryers in the restroom to blow out and melt the snow.
So is there a modification to the air inlet stream to block snow?
The filter minder prior to the trip had registered some blockage but not the full stop that I saw when I opened the hood.
To effectively do the zoodad mod you cut the rubber out as well.
Back home we all had twist grommets on the grill and a canvas cover that fit the grill perfectly, from headlight to headlight was covered with the canvas cover. I have herd of guys putting a piece of plastic or a piece of cardboard in a gallon ziplock in the opening of the zoodad mod cut out.
__________________ My Truck: Early '99 F350 CC LWB 4X4
What conditions were you driving in that caused it to clog up? Were you 4 wheeling through snow? I've driven my truck through many snow storms and with the zoodad mod I've NEVER accumulated any snow on my filter. And in those conditions played around in the parking lots full of snow, while no other vehicles were around, and played around close to 50#s of boost. I can see it getting clogged playing around in deep snow causing it to get clogged or maybe perhaps a blizzard, but under normal conditions this would never happen. Please be honest and explain your driving conditions prior to pulling over at the off ramp? Are you in one of the states that are having blizzard like conditions currently?
"Vehicle operation in heavy snowfall or in dry loose snow that may swirl around the front of the vehicle may feed excessive amounts of snow into the air intake system. This could plug the air cleaner with snow and cause the engine to stall."
I experienced this on a NY to Chicago run a few years ago. About 5 hours into the trip (major snowstorm) my air filter idiot light on the dash lit up. Pulled into a rest area and removed air filter which was a solid block of ice. This was with original/stock air box. I haven't experienced this condition with the AIS...yet. But then again, I haven't driven for that length of time in a major snow storm since then either.
Early 99 F250 PSD (XLE4) XLT, Extended Cab, Short Bed, 4X2, BTS Trans/TC, 3.73 Limited Slip, Transfer Flow 48 Gal. Mid-Ship Tank
Western WA - Member since August 2001
Conditions were a bit unusual, at least as far as the lenght of time we had. It was a dry loose snow that just swirled. It didn't stick to the road, just billowed up with any passing vehicle. And we had hours of that before it was a problem.
Sounds like the gril cover that's sitting in my garage may have prevented the issue. So I'll be installing it before my next road trip.
Ok, so this is an experience we know to expect when running a completely stock intake system. How about those running aftermarkets? Anyone else have any troubles? Or is it just limited to those running the stock systems?
On Saturday I towed about 5,000lb on a 150 mile trip with snow accumulations of about 1 inch per hour. Temperatures hovered around 20 degrees F for the entire trip.
I have a zoodad mod on my truck with a stock air box and motorcraft filter. I had the air filter pack up on me about every 40 miles. I carry a spare filter so I pulled over and swapped the filter out. I knocked the snow out of the filter and put it on the passenger floor, by the time the filter had packed full of snow again the filter in the passenger compartment was dry and ready to be used. I noticed that if I was in traffic, the filter seemed to clog up faster than when I had no traffic to contend with.
2002 F250 7.3L 4x4 ext. cab, short bed, auto, 285/75/16 BFG AT, Walker muffler, DP F5, aprox. 100k, race and rally car hauler
Tailgunner had issues with his air filter becoming a blue block of ice after performing the zoodad mod. However, it seems the 6.4 has this problem right out of the box. Look here. Apparently, Ford did not test the 6.4 in the driving snow we get here in Michigan and points North.
2002 F350 Lariat CC 4x4 Auto 4.10 DRW, DP-Tuner F5 live tuned stock, quiet, 40dd, 40, 60, 80 tow, 80e and 120r, B&W GN, BrakeSmart, 'pooned tank, tank and pre-pump mods, 2µ Dahl 100 filter, regulated return, BTS dual HPOP, AC singles with EDM 34 lpm nozzles, AIS, H2e, Spearco 6.0 IC, Hypermax 3.5" dp--> MBRP 4" 304SS exhaust, BTS tranny, 203º T-stat, Chevron ELC, coolant filter, Oilguard bypass with Schaeffer 9000, WranglerNW 200 amp alternator & Optima group 31 batteries, Nippon-Denso starter, SPA gauges, SteveRacer mods, Hella 80/100W 9007s, Hella Micro DE foglights, 1000FF driving lights, 220W backup lights, Stancor contactor, Michelin XPS Traction tires, X-Springs, Bilstein shox, custom bumpers but otherwise stock. Nov 30 '99 build engine with 16 K miles, Fluidampr, Comp Cam 910 springs, Melling LPOP and ARP headstuds.
I have the DIY Tymar filter system,I havent had it in snow yet..but I dont see how it could ever clog at all. I used a 4" piece of metel pipe(some use PVC but not me) and Napa air filter that I cant remember the # of,sealed around the filter and the pipe with silicon and you can bet shes breathin clean air....(just my 2 cents worth)
99.5 F-250 Super Duty w/7.3 Powerstroke
4X4 Short Bed/Crew Cab
Magnaflow 4" Turbo back SS Exhaust/5" Tip
DP-Tuner>No-Start,Stock,High Idle,60HP Tow,Decel,80HP Econo,120HP Race,Lope Idle
Autometer Ultralite Series Gauges(Boost,Pyro,Trans)
Rancho RS 5000"s
B.T.S. Valve body
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