Ford 6.7L Power Stroke Diesel :: Climate Control - A/C Compressor Will Not Engage And Allow For Cooling The Cab Of Truck
Mar 18, 2015
Here is the issue i am having. 2011 F-350 King ranch with all bells and whistles. In Arizona now we are in the season that the weather is cold in the AM and sometimes hot enough in the late afternoon to need the A/C in the truck. with the settings on Auto which i normally do, and the external temp reading in the 80s, and the internal thermostat set at 70 or lower, the A/C compressor will not engage and allow for cooling the cab of the truck. But sometimes it will work just fine. I am assuming there is a temp sensor for cabin temperature. Where that is located. or will i have to change out the entire Climate Control Module. I would take it in to have it checked out but it is an intermittent problem, and i cant not have my truck for a couple of days while they try and figure it out.
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First off my vents stopped blowing completely. At this time the thermostat was still functioning. Fuse 28 was blown. I replaced the fuse and it blew again shortly after turning the heater on. I replaced the relay and resistor and still blowing fuses. For some reason I tried a 30A fuse and it didn't blow but a few minutes after turning on the heater there was a burning smell. I immediately turned it off and pulled the fuse back out, which was hot. I then replaced the blower motor and at this point there is no power at all to the control panel. The fuses are all fine as well as the relay and resistor. There's power to the fuses. So it seems like somewhere between the fuse box and the control panel I'm losing power.
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I have a 2005 6.0 f350 lariat... My climate control doesn't switch very well I can get it to go to floor sometimes after 15min of pressing the button. The vacuum pump is good the tank has no cracks. I feel that the system is either plugged up or has a leak. I cleaned the tank after my hub seals went and it sucked a ton of dust and dirt through my wheel bearings in to the tank. Is the vacuum switching part of the digital display? Or is there a separate part?
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My engine cooling fan came on when I first started the truck, was reading of 2k on torque app, ECT was appx 100* with the EOT a little cooler after about 5-10 minutes things went to normal around 600 rpm. It did not happen anymore during the drive, I was seeing about 192* ECT and 198-200 EOT. I let her set for 2 days and took her to town and the fan was at normal RPM's, Is there any problems or is that normal?
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I had a nice level straight stretch in front of me and engaged the cruise control. No go! I tried a few more times and it still did not engage, even with various button sequences. My thought was that this truck is a computer on wheels. So at the next opportunity I stopped and shutdown the engine, turned the ignition switch OFF and then restarted started the engine (and rebooted the computer). The cruise control works fine!
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So the A/C compressor died on my truck. I am looking at replacing it myself and it looks rather tight in there. My labor manual says I have to pull the fan/fan clutch, fan shroud and right inner fender to gain access.
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If the truck is cold when i put it in drive it engages fine. Drive to the store, start it up again after its warm, I then need to rev to 800 rpm to get it to engage. Once drive is engaged one time i can go from park to drive, rev to drive doesn't matter it works correct every time. Rebuilt the transmission with suncoast kit. New precision industries billet torque converter. New trans pump, new valve body, replaced all pistons and seal rings. Replaced all the solenoids except lo rev and overdrive. Will change those in the next couple days. Side note transmission had this exact issue before i rebuilt it. Exhaust back pressure reads 55 to 60 psi at idle. I replaced sensor, cleaned pipe, and checked the wires for cuts. Previous owner had a smoke switch wired up at some point but he removed it before i bought it. Truck is tuned by innovative, sxt livewire... does the same thing with stock tune.
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Strange thing happened yesterday and again today. I have my compressor hooked up to up fitter #3 ,turned it on yesterday to fill the tank back up to 120psi. Before it filled up i shut the truck off to fuel up..but the compressor kept running for a few seconds after the truck was off. and today doing some running around the compressor turned on out of the blue when i was driving..but the switch was off.
The shut off switch (on the compressor itself) turns it on at around 90psi and shuts off at 120, but the thing filled my tank to 180 before i noticed it was on, pulled over to shut the truck off and again it ran for 10-15 seconds after the truck was off. I'm pretty confused. maybe it has something to do with the build up of snow under the truck, we just got 16" two days ago. but still when the up fitter is off shouldn't that cut the power from the accessory hooked up to it?
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I have a 2004 F350 with 6.0. My problem is the 4x4 will not engage from inside the truck. I have to get out and twist each hub to lock in the 4 wheel drive. If I rev the engine with high rpms the front will lock in with a big jerk. It use to lock in just by turning switch. What is the best way to fix it?
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Had just got done filling up with diesel, drove 1/4 mile and truck just died. Tried to start it and nothing. No power to edge tuner either. Fuse #22 20a under steering column blown (engine control). Replaced and keeps blowing. not sure what is causing it. Just another wrench to throw in my wedding week!
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I have a 2008 Toyota sienna XLE and just recently I have been unable to change the heating/cooling zones. For instance I can't change it to defrost even if I press the defrost button. Right now it is stuck on vents. It's all electronic controls on my model and even if the display is showing feet or defrost it is still coming from the vents. I live in New Hampshire and on cold snowy days I've got to be able to change which zone I want heat.
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Well, last night I took my F-350 up a wheeling trail. I'd been up quite a few times in my old Rover, so I knew I could go a ways in without damage. Just uphill, muddy, and ruts / rock steps.
One thing I notice is that when you engage low range in the diesel, the transmission starts in 2nd gear. My previous gas Super Duties always started in 1st. I'm assuming this is to protect the transfer case from torque overload. Also, the throttle response seems to change when low is engaged (the pedal becomes less responsive, which is nice).
I've had the gas Super Duties off road before, and all of mine have had the locking rear diff. The diesel lugged along perfectly. My biggest fear was crunching the DPF / SCR / DOC canister on a rock step. In that respect, I'd rather wheel a gas. The manual shift function makes a lot of sense in low range - you can force a start in 1st, 2nd, or 3rd. And prevent meaningless up / down shifts since the grade can change quickly.
These trucks' biggest hindrance is their size. However, if you have the trail room, they are actually excellent off road. Many people look at a Super Duty and see a vehicle good only for pulling or hauling. Not so, these trucks are as good as a Jeep off road, again with trail room being the only concern. The locking rear diff was never really needed, but I engaged and disengaged a few times to keep the mechanism free. I really love this feature.
One thing that happens frequently for me in north-east wheeling is water crossings. Could be a simple brook but mostly it is mud holes encountered on tight trails. In some cases these are only a foot or so deep; in other cases they are 4 feet deep. Ford states to "try" to keep the water below the level of the hubs, which amounts to about 15". Aside from possible front axle contamination, my biggest concern would be the electronics on the diesel which are mounted to the frame or floor pan (transmission module, NOx module, etc.) The gas Super Duties don't have these concerns. In the old days, as long as a diesel had air, the engine would run under water. This engine requires electronic control of many things, including the injectors...so it won't. There are also some axle / transmission breathers which run about floor pan high to be concerned about, but these can be easily extended.
Maybe it's due to the twisty frame which GM loves to insult Ford about, but these trucks have excellent wheel articulation. I'd be surprised if a coil sprung power wagon flexed more, at least in the rear. I'm impressed.
Finally, the traction control. I experimented a bit on a slippery rock step. This was the only step which required the rear locker - sort of. The front wheels climbed the step, but the back flexed to the point of one rear wheel basically almost off the ground and severely unloaded. With 4x4 Low engaged, and traction control "off" as much as Ford will allow, the truck could not pull itself up. Turning traction control on allowed the truck to very nearly pull itself up. A little more throttle / finesse probably would have gotten the truck over, but lots of ETC operation glazes the brakes and spews brake dust everywhere. Being able to start in a higher gear manually really adjusts the torque control. Locking the rear end and the loaded wheel bit right in and she went up and over.
When doing some off-road driving, the "off-road" screen for those of you with the LCD message center is kind of fun and informative to watch. It's nice to see how far your wheels are turned left or right when spinning in ruts or what crazy angle your truck is on. Howie Long could probably document the exact up / down / left / right slope angle a Super Duty needs to be on in order for the tailgate not to open. I never had an reason to open the tailgate while in these crazy angles, of course.
Overall, very impressed. It's not as good as my old Range Rover, but I would say more talented off road than ALL other Ford vehicles except the Raptor.
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Under normal driving, my cooling fan rarely comes on. The truck runs ECT 194 to 200 and EOT about 7-8 degrees warmer. On grades in the mountains, not towing, it will cycle on if the ECT gets to 210, cools it down and cycles again if needed. My question is, under similar conditions, what does your truck do? When towing my 5th wheel, about 13k, when its 90 degrees plus, at between 60 and 65mph on level ground, my ECT runs 210 and the fan comes on to around 1400rpm and cools it back down to about 204.
When the ECT gets back to 210, the fan does the same. On uphill grades, I see as much as 220 ECT. When this happens the fan comes on at around 2500rpm and cools it down to about 199 pretty quickly. I have a new oil cooler so my oil always follows and on my last trip I never saw more than EOT of 225 on the longest, steepest grade. The reason I ask is to see if this seems normal. My mech keeps mentioning that if my fan is cycling it may be head gaskets. But, I don't have any other head gasket symptoms. I think it seems pretty normal. If the fan doesn't come on and cool the engine when its working this hard, then what is it for? What does your truck do under similar conditions?
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The 2011 Platinum's "black" interior is really chocolate in color. This just killed a potential sale today. But I did drive it and it didn't dissapoint. Probably out of my price range,but if money wasn't and object, probably would go for the loaded blk. 4x4 Platinum.
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Was driving the last week and happened to look down and notice the display for my climate controls was completely black. They were still running at whatever I had them last set at but couldn't change anything or turn the system off. Pulled into a parking lot, turned the truck off then started it again and everything was working fine.
Couple days later, was driving down the road again, glanced down and now my climate display, stereo display and odometer display were all black but once again everything was still functioning, just couldn't change anything. Turned my wipers on to check those, heard a little click, and all the displays popped back on like normal???? Wipers worked just fine too.
I'm assuming a short somewhere but wouldn't even know where to start to look or if it's even within my limited skill set to try and track down.
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getting ready to do a cooling system flush per the instructions Cheezit posted a while back, which say "refer to Cooling System Draining, Filling and Bleeding in this section." I think I can figure out the drain and fill but how do you bleed the system?
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I have a 2003 6.0 Exc. I have installed an external "Bullet Proof" oil cooler, and essentially all of the "bullet proofing" accessories with the exception of head studs. I also have installed a Mishimoto oil cooler, as the OEM cooler had a crack in the upper tank, My particular problem is that the cooling fan does not kick on (audibly) until about 230 deg or so. It quickly cools to about 215, and the fan kicks off (audibly). On the long uphills here in AZ, it will repeat this process, sometimes getting as high as 240deg.
(As monitored by my EDGE tuner) I have utilized the blue-wire-to-ground trick noted elsewhere, manually turning the fan on myself, and that works great. What I'm asking, is what sensor sends coolant temp to the ECU, ( and where is it located in the cooling system) which in turn determines how much to turn the cooling fan on? What typical level the sensor sends to the ECU to control the fan? I would like to put together a circuit that "fools" the ECU into turning the fan full "on" at about 210 deg, and stays on until the coolant temp reaches 195 or so. I would like to check that sensor first, and make sure it is working correctly before I try to band aid a fix.
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My truck was parked at home and hadn't been started for 10 days. When I did start it for the first time, I heard the cooling fan spooling up or down, consistent with the engine rpm. After pulling away from my home I saw the fan speed spool up to near 2,800 rpm during the short period it was locked-in with the engine speed.
While driving out of my neighborhood, and about 1/3 of a mile from my house, the fan returned to normal speed of about 480 rpm. I have the FSS pid displayed on my Scangauge and was able to see the fan speed while hearing it. Now I know what the fan sounds like at a high rpm. It makes quite a roar.
This has never happened before. I've driven the truck a few times since then and it hasn't occurred again. What may have caused this?
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I have a 2003 that won't engage all the time. I have manual locking hubs.
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2006 F350 6.0 throwing code P0480 and I'm having a hard time figuring anything out pertaining to my truck. Trying to figure out what exactly it is and how to fix it myself.
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I currently have a 2003 F-250 6.0 with 112,000 miles on it. While traveling interstate speeds (70+) and the I can hear the cooling fan rev up and down every 10-15 seconds. Is this normal?
Also when it spins up, it sounds normal then make a high pitched squealing noise. Thoughts?
I am also needing to rebuild the fuel bowl. I noticed DieselOrings offers rebuilds for the 7.3 but not the 6.0. Will these fit or any suggestions on parts?
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