by Remps » Sat Jan 04, 2014 3:41 pm
My work 2013 F550 went into limp mode on me a couple weeks ago towing 17K down the 881. Got to do 25 kph for about 20 mins before I found a place to pull over, pile of traffic behind me. It would only rev to 1500 in park. Waited a half hour till the other feller I work with showed up with the other '13 F550, switched the trailer over, and continued on my way. He managed to get 60 kph out of it going back to town unloaded. He got back to town, shut it off, started it again, and it was fine.
I thought of trying it before I called for backup, but was worried it wouldn't start again, and being -30C, I didn't feel like freezing. We plugged a diagnostic reader into it later, it showed an overboost code. I never got it to go over 25 psi when I was driving it. I did get 30 psi out of it once after I changed the air filter in it last week, then back to 25 max. I think the computer didn't realize there was extra air available till I floored it once with the new filter, then it recalibrated itself. Btw the airboxes in these F550's like to hold water. Drive thru heavy snowstorms brings snow into the airbox, then park the truck in the shop overnight, and the waffle bottom of the airbox holds the water. Stupid design. So now if I drive thru snowstorms, I gotta pull the airbox apart at the end of the day, dry the filter and clean the box. I like the transmission though, it works great, nicer than an allison imo. Well, so far anyways. Pulling 17K up a 6% grade has it down to 3rd gear and 50 kph. 300 hp and 660 ft lbs isn't enough.
'90 D250 R/C,727,IC,6x.009's,1/8" bump,fuel psi,straight pipe w/5" stack.
'90 W250 R/C,47rh,K@N,HX35,1/8" bump,2nd gen IC,boost,egt,trans temp.3.07's.
'96 2500 S/C L/B,2wd,NV5600,3.54 L/S,cai,egt,pacbrake,mbrp exhaust,10 plate.
Bring back the Bank of Canada, PRE- 1974.