Ford Super Duty (1999-2016) :: Luke Warm Air When HVAC Controls Turned To Hot
Nov 22, 2013
When my hvac controls are turned to hot, I'm getting only luke warm air. When moved over to cold it feels like the a/c is on...granted it is 21 degrees here. What I've done so far:
1. Flushed the coolant system at the local COOP TBA
2. Flushed heater core-Both heater hoses are hot to the touch as well as the heater core itself. The hoses are within 10 degrees of each other tested by an infrared temp gauge.
3. Verified the blend door actuator is moving. I can see it spin while attached to the box as well as I pulled it out and plugged it in it will move from hot to cold.
4. Smacked the #$%! out of the blend door box.
The fan still functions as it should from low to high. The truck also gets up to operating temp as usual.
Is it possible the actuator is still faulty even though it moves and not going all the way to the heat side? I considered picking up a replacement but I hate to start throwing parts at it.
Did the blend door give up? The snow is here and I need the heat for those 4am waterfowl hunting trips.
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My manual heat/cold adjustment dial is working fine and transitions from heat to cold readily. However when in max heat, it is blowing luke warm. The higher the RPMs going down the road the warmer it blows (still not near as hot as normal), then idling at stop lights or in park it goes back to warm only.
My engine temperature is running normal at all RPM levels while driving and idling. Partially clogged heater core maybe, where higher RPMs force more water through it? I assume its not the water pump or thermostat since my operating temperature is staying normal...
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I just picked up this truck and have found my first undisclosed problem. The A/C only works on MAX. If you turn to any other setting, regardless of selected temp, the air blows hot. And I mean full hot! I was thinking the control panel assembly is bad?
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I have a 2005 F350 6.0 with 4 wheel drive.
Late last winter, the 4WD stopped working. I diagnosed it to be a vacuum problem. Like a moron, I purchased a vacuum pump and threw it in there, I just figured that it was bad. It turns out the new pump I bought was bad, but the old pump was fine... Go figure. At any rate, when I switch to 4WD, my HVAC goes to full defrost and the 4WD does not engage.
I think I've narrowed the problem down to the 4WD actuator, since if I hook the vacuum pump output directly to the hubs, the 4WD works fine. If I switch it into 4WD, I can hear the vacuum releasing in the actuator, but it doesn't seem like any vacuum actually gets routed to the hubs. It just opens to atmosphere.
I've noticed that after switching to 4WD, the actuator only "Releases" the vacuum for a few seconds, and then seems to close itself. Is this normal? If I cycle the 4WD selector from 2WD to 4WD repeatedly, it will continue to cycle.
1. Is there any way to service this valve, or should I replace it?
2. Is the valve acting normally?
3. Am I on track with this repair?
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So my vents stopped actuating to different positions in my 2011 6.7 F350. I read that it could be a vacuum pump or solenoid issue. In any event, I turned 4x4 on and went down the street and made a u-turn - 4x4 seems to be on as the truck wants to hop the outside wheel when turning. I want to check the vacuum pump anyway but for the life of me cannot find it anywhere. Moreover, google turns up nothing which is making me start to believe the new trucks have a completely different system.
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I'm installing an aftermarket radio in my 2004 SD. The illumination control stopped working (when I turn on the lights, the radio doesn't get darker), and now the dash and a/c panel aren't backlit any more.
This is the first time I've driven it since the new radio. I thought I might have seen a spark when testing to see which wire was the illumination control, but I'm not sure. I've got a fuse box diagram, but so far all the fuses look good.
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My HVAC blower motor stopped today while the wife was driving the F250. I thought I should swap relays (with the heated mirror relay - same Ford Part Number) to rule it out or identify it as the culprit. However, since these are close to the firewall, I have a hard time getting the grip and leverage to pull the relay out of the Battery Junction Box (BJB). How to make this a bit easier?
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I was recently on a trip pulling my 32' Travel Trailer, and out of the Hvac system started blowing scalding hot air and soot and smoke into the cab. I pulled over to check things out and could find nothing wrong. When the turbo kicks in it blows even hotter. I could find nothing wrong at the time. As I got back on the road again it started again a few miles down the road.
I made it home and started checking things out. Around the dash, airbag, glove box, on the window , headliner and carpeting, is covered in soot and smoke. the computer is now telling me that ALL the doors are ajar, power locks and key fob do not work, 3/4 of the window switches do not work and 1 window does not work now. I removed the glove box and the panel underneath it to look at the HVAC system.
What I saw about made me cry. The Plastic that houses the HVAC system had started melting and the HVAC hoses have melted. I have still not found the reason for any of this to happen. Also when I got the truck a year ago the Turbo would spool up around 1800 to 2000 RPM. Now it does not spool up until around 3000 to 3250 RPM.
HVAC system and hose
HVAC system housing
Glove Box and Vent
Air bag and Vent
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So I just got my 2014, upgraded from a 2007, and one change that is bugging me is the steering wheel controls for the radio. In the old truck clicking the scan up/down buttons scanned to the next radio station, in the new truck it scans through the preset radio stations. I really don't like that. Can it be changed or am I stuck with it?
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I just purchased a donor wheel from ebay... it was the right price, and I'll turn around and sell the shell and the switches when I pull the wires out.
I'm looking forward to the wheel getting here. I expect to be able to swap the wiring harness inside the wheel and then be able to add the redundant audio control switches. This should leave me with the impossible setup of having a black vinyl wheel with cruise and audio controls.
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Ordered a 2015 f350 CCLB FX4 XLT 6.2 about 2 weeks ago.Tried to see if the control buttons on the steering wheel were lighted couldnt tell in the daylight.
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Driving my new to me 2010 Super Duty this morning in the dark and noticed that the mirror controls are not illuminated. Is this normal or are they suppose to have illumination?
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sitting at a redlight with radio off, sounds like heater door or something under the dash is moving. Thing is, all the controls for heater and a/c were off.
2009 f250 5.4.
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I have a 2005 f350 lariat 6.0. My horn, cruise volume, heat and fan controls on the wheel are not working. The airbag light isn't on. I am thinking that it's the clock spring. The stereo controls were intermittent for a while so I think it's the clock spring. I just want to be sure. Anything I could check?
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On my 02 f350 xlt my turn signals work but not my wiper speed switch, when i put the small fuze in, the wiper go full speed and wont stop unless i pull the fuze out... What could be wrong?
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My 2000 F-350 SD 4X4 V-10 has no cruise control, and the A/C controls are not powered. Is it possible that both these power option circuits are run through a fuse link, and better yet, through the same fuse link? A/C has been troublesome in the past, but the cruise quit one day without warning. All fuses are good. Tried jumping the A/C pressure switch to recharge it, but no power is present.
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What all would be involved in swapping from regular ac controls to automatic climate control like the lariats have on a 2015 xlt superduty?
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What all would be involved in swapping from regular ac controls to automatic climate control like the lariats have on a 2015 xlt superduty?
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My truck at idle sounds like it has aftermarket cams and the exhaust coming out of the tail pipe smells really rich. when driving down the road my heater controls default to defrost. Also when I fill up with gas it takes forever to get it to fill all the way. I am lost on where to begin with the problem [ I did check the tank vent hose and their is no blockage] Possible vacuum issue?
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this doesn't make any since to , what's going is, sometimes the AC starts blowing warm air, I found out if I goose it I can hear what sounds like the damper door slamming shut, then AC starts blowing cold again. I changed out electric vacuum pump, but it still does it, starting to get worse & its hot.
Truck is a 2002 f250 powerstroke, the way I understand it, is only thing vacuum pump is supposed to control is AC & 4 wheel locks, my truck is only 2wd. I don't understand why when when I goose it ,it goes to working, what can I do to fix this.
I just found out the " heat and cool "adjustment is electrical, not vacuum, it goes to something under dash, but what it is, heat strip, reastat(sp)??? where and what damper am I hearing. It is not like heater is on ,not that hot, feels like ambient temp, I am at a loss...
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So the other day i opened the door and heard a super loud clunk noise come from the door and when I turned the car on and pulled hte window down it wouldn't go down all the way, only about 75% of the way so I assumed like BMW cars the window motor died but oddly it continued to go up and down just now 100% down.
Then 3 days later when I came to drive the car again the window went down to the 75% mark and now its jammed there with no movement even if I tried to lift the window up myself. Usually a broken motor allows this to happen but since it isn't budging I am wondering if its an electrical issue with the power window button more than the motor?
I say this because when i try to lower the passenger window from the driver side it works than out of no where on the 3rd time it wont move at all than 5 minutes later it will move or if it doesn't move I just go and pull the window down from the passenger side then I come to the driver side and try it and it works again than it'll stop again. So maybe its the power window control buttons on the drivers side that's failing?
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