Hey hows it going this is my first post and I hope all you guys and gals out there can give me some good info back soon my question.
Well i own a 2001 F-250 with the PSD and I live in Kenai, Alaska and in the morning when its at least 38 or so colder and I start my truck it starts and runs great. But after running a couple of minutes the idle goes up a bit not much but a bit and i get a loud hissing sound. But all i have to do is tap the acclerater and it goes back to normal. But the sound will come back unless the motors close to warm. It only does this on the first startup of the day. When the motor is completly cold. The truck has 196000 on it and i dont think this is normal it doesnt seem to effect it in the performance area of it, it still hauls for being stock pushing 38 inch tires through stock 3.73 gears. But could this have somthing to do with the exaust backpressure valve. If someone could help me it would be great, if this is a problem i want to ge it fixed before winter hits and it gets really cold, and thats only a month or so away here in AK, thank for ur help.

 

it is the exhaust backpressure valve, and it is normal. When it gets even colder it will sometimes do it with light acceleratro pressure. If you get the truck up to temp, then stop & let it idle, it will kick back on if it is cold enough.
bottom line is it is normal.

Congratulations on your first post and enjoy your powerstroke.

 

you can also disconnect it by unplugging it. it's between turbo housing and downpipe.

 

Ok well thanks for your info but man it is loud sometimes very loud. But if its normal i just wont worry about it anymore, Thanks again.

 

Considering your location, I definatley WOULD NOT disconnect it. It's purpose is to help keep the engine at temperature by putting a load on it. I can tell you this though, at -40, it isn't enough. I had a manual switch for the EBPV on my 00 along with an AIC, even with the idle cranked to 1800 and the EBPV closed, 5 minutes of idling in that weather would have it back to stone cold on the guage.

 

i have heard my exhaust hissing before at the tailpipe, started up on a day when it was 70 out or so. not bad. i now know what it is, thanks.

 

Where you using a grill cover? Not criticism, just wondering if they're what they claim to be. I'm in Indiana, and when it gets around single digits and below I keep a large beach towel in the truck. So If I'm at home or at a friends I just lay it over the grill. It makes a big difference in how much warmer the engine gets. The obvious down fall to the towel method is you cant' drive around with it on the grill.

 

Yup, had a nice Cloud Rider stainless insert winterfront:

It made a big difference for the most part, espically going down the road, but, there were a few days last winter cold enough that the thing just didn't make enough heat to stay warm. Of course the worst one I was out in, I had to wait 4 hours at night for the bus to pick up my now ex GF, was -40 with a wind chill of -49F... I'd go for a drive, bring it back up to temperature, and within 10 minutes of idling the heater would stop pushing heat...
I think I may invest in an Espar or Webasto fuel fired heater for my next diesel.

 

Buuurrrr, -49F! Thanks for the info and that's a nice truck and I like the gril. My towel methond should be good. The lowest I've seen the temp her in Indiana is -12 or -15. Big difference from -49. Again, Buurr.

 

Yup, for those kinds of temperatures, your method will probably work fine, although you may find it wants to run a bit cold in a sustaned low engine load criuse situation.
FWIW, with 0W40 in it, a 7.3 will start at -40 on the glows alone, found that out the hard way after my block heater cord shorted out...
That was a nice truck, and I've been kicking myself for quite some time for selling it... It's amazing just how badly skewed your judgement can get when there's a woman involved... LOL

 

Hey guys thatnks again for the info, Also i bought this truck in the states and now i have brought it back up here to AK, How hard is it to install a block heater by yourself, or should I let a shop do it?

 

i think that all of the trucks have block heaters in them. just fish around behind the bumper, and find a electrical cord. i took my bumper off to do the leveling kit, and this cord just fell down, so i tucked it behind my bumper when i put it back on.

 

Whistle when cold???? Mine sounds like a grizzly that just got an enima with a louisville slugger!