Having a problem with the blower speed. Only blows on high. As soon as you move it below max it blows very little like its on low nothing in between. What could cause that?
View 3 RepliesMy dad has a 2000 f250 4x4 with the 5.4. he said his blower would only blow on high. I told him it was his blower motor resistor. i thought it was under glove box. he took it apart and said no but there was a little box thing with wires he took off anyway and put back on. I then told him it was under hood below a/c lines. he replaced old one with a new one from auto zone and replaced the pigtail( plug too) fan works on high and a little bit on low very very little when u switch it to medium it stays the same. High works great. So we replaced the fan switch. (Radio was a bitch to remove) and it still does the same thing. I checked all fuses . when I check the plug at the resistor there is power to the center pin it stays on when u switch to low and medium but when u turn high on power goes out( on test meter) is there something I am missing? the blower blows on high even when u remove the plug from the resistor. Is that normal?.
View 4 RepliesRecently got a 2003 f 250 6.0 that has had a little work done on it. Absolutely love it with 1 exception. When I turn on the ac or heat It blows a 10 amp fuse that goes to the blower relay. It was occasionally now it's all the time.Blower ok, fan speed resistor ok. What or where to look.
View 8 RepliesWell my blower motor only blows on high which IMO points to the resistor, went and bought one and still only blows on high. Tried to test the plug that goes to the resistor but couldn't get anything, shouldn't there be 12v going to the plug and then step down to the resistor until high is selected then 12v bypasses the resistor all together? Blows strong and cold, too cold actually since we cant turn the blower down so we have to turn it off for a few minutes.
View 9 RepliesI just bought the truck and the ac was working and now out of nowhere when you turn it on it just blows hot air so I just assumed it was out of free on so I bought an ac pro but that did nothing.
View 5 RepliesVery strange things happening with 2009 F350 Gas, first the heater blower only is now working on high, progressively has gotten worse, low settings started not working a while ago, now only high works. Just recently the strangest thing, start the truck OK, turn on radio OK, turn lights on then the radio goes off. Will bring it to dealer in a day or two if I can't figure this one out.
View 3 Replies2005 F350 Lariat ..... I cant get my AC to work in my truck.
AC will not cycle on, Originally thought the system was low because I jumped the pressure switch and it cycled fine (But did not cool inside the vehicle). Checked the pressure and it was in the 40lb range on the low side. My blower will only blow on high but I assumed it was a defective fan speed control.. Possibly an issue with the climate control?
My '01 recently seized up and a buddy determined it was the AC pump. Replaced the belt with the bypass version. A month later, I moved across the state to Iowa. A couple weeks into living here I turned the truck on and it was idling really high (about 2500-3000) but would settle down to around 1100 when put in gear. However, shifting into gear is causing a progressively worse "jump" into gear. Hadn't really had the money or the time to take it in so I let it mostly sit unless I absolutely needed the truck.
Today, the idle is still high and does seem to cycle a bit in that it will rev up close to 3000 then settle back down around 2200 or so and then rev back up again and so on. I backed it down the drive into the sun for a little warmth and it darn near jumped a foot when I shifted. I turned the heater on defrost so I could clear the windshield and absolutely nothing came out.
I can't get into a garage for a few days to get it hooked up for diagnostics. So I thought I'd try here. My research leads me to think part of my problem may be a vacuum leak and/or maybe a sensor somewhere.
I have a 2000 F250 and the blower motor stopped working, the a/c clutch locks in but the blower will not run. I back tracked and I have no power at the motor or the resistors, or the speed switch. There has to be a relay that is turned on by the a/c selector to power the blower circuit. I guess my question is need a schematic of the a/c circuits? Or the location of the relay?
View 7 RepliesMy batteries drained twice and now I prob. need new ones but with the key off I can turn the blower on any speed and the passenger airbag light blinks. I hear the clicking from a relay under the dash when I do this. I have checked for leaks in the windshield and found none . The fuse box and the GEM are completely dry. My ignition switch will pull out with the key in it . I noticed this just the past few weeks . Now yesterday my odometer speedometer quit. It did pull a code for this. Maybe it is connected maybe not . My odl light is flashing but still works. My cruise doesn't but I realize it is connected to speedometer.
2000 F350 supercab diesel....
I've got a 2000 F350 crew cab with a camper I bought in Chile and I'm going to be driving it from the tip of south america back to the US. It's a 9 month epic family road trip. It'll involve crossing the Andes several times and going over 15,000 ft. There are roads up to 19,500 ft in various places.
My question is am I going to have problems with the altitude? What can i do about it? I've got another truck which is a unimog, it's slow as hell but has a special kind of booster gas you can inject in to the engine to get it started in very cold weather and at high altitude. I chose the F350 for the truck instead of the unimog because a unimog is slow as hell (think 40mph max speed), but it handles extreme conditions well.
My blower in my truck only blows at levels 3 and 4. Do the blower motor going out? Switch? Motor relay? I've read a bunch of things try?
View 5 RepliesI bought a used 99 f250 v10, i went to turn on the a/c today, and it only blows where the defrost is toward the window. it gets cold after awhile, but nothing out the vents, the heat either.
View 9 Replies2002, F250, 5.4, ZF6, 140k.
My heat only blows through the defroster. I was looking for my vacuum pump, but can't seem to find it. I find plenty of diesel threads where they show it, but mine isn't in the same location. I can actuate the diverter by hand and it will make the heat stop at the defroster and come out at your feet.
I have attached images of my rig.
Were to look for the vacuum pump? Any key spots to look for failed vacuum lines? What is this?
This is where most threads say the vacuum pump should be.
This switches from defrost to floor when operated manually.
I have a early 2003 SD with the 5.4 triton. It has a oil leak on the passenger side, the oil blows back and gets on the exhaust.
I have been under the truck with the engine running looking at where the head meets the block and at where the valve cover meets the head and can not see a leak.
Sitting there running at idle it does not drip a drop off the engine but the entire underside of the truck is coated in oil.
I did notice that the depression around one of the upper valve cover bolts was filled with oil, I cleaned out the oil, let the truck run and it stays dry.
2007 F350 Dually, 6.0L
AC will blow cold, then shift to blowing warm, muggy air, then back to cold. Seems to be some relationship with throttle movement. Cruising steady ac seems normal. Multiple throttle shifts in changing traffic seems to trigger the warm air. Once accelerate back to normal cruise, can feel clutch/compressor shift and blows cold again.
Any ideas? I have read a possible cause can be the ac clutch can wear and need to remove spacers? Is this a DIY job? What about the ac clutch relay switch? On reading an online repair manual, seems that the clutch is magnetic, and if no battery power to clutch, it removes itself from compressor?
Just had an EGR delete kit installed. Any relationship to this and ac problem?
The truck starter and radio would magically turn on and off after the first rain, it was hard on the starter and I had to replace the starter and the cause of that problem was the vacuum line coming from the brake booster running over the top of the wires in the 4 plugs attached to the driver side fender. It rubbed through exposing the wires and got wet connecting them. I cleaned them and put the electrical tape silicone and then it has been working fine for a couple months.
Now every time I try to start fuse #20 blows. So far I have traced the wire that goes through fuse 20 through the firewall being the blue wire with a orange stripe on it it goes through the top plug upper left most wire. From there I followed it through the 4 wheel fender plugs the furthest plug from the firewall still being the blue with orange stripe. If I unplug that plug and try to start the truck it won't start but the fuse does not blow.
I then followed that wire all the way to the neutral safety switch. I hate tracing wires. (About 8 hours so far). I am thinking neutral safety switch. Also another thing I am thinking is weird is that blue wire with the orange stripe is grounded when the safety switch is plugged into the transmission and if it is unplugged is is not grounded. And I don't think it is supposed to be grounded because that is the hot wire when the key is in the start position.
Details about the truck : 1999 f250 diesel 7.3 super duty automatic 4x4 dated 4/99
I have taken pictures of the plugs and wires I was going to post it but don't remember how.
So my heater works when I'm rolling down the highway. When I'm at about 20 mph or less it blows cool air. Also when it's just idling it blows cool air. What I might have an issue with?
View 6 RepliesMy truck is a 2000 f350 with a 7.3 init but when I shut it off and open the doors the power is still on in the truck and ac blows then shuts off. Relays are going crazy and I can not find the problem.
View 7 RepliesI have a 2011 F250 with ac problems. When you start it in the morning and turn the ac on it only takes a small amount of time for the air to start cooling. If you turn the truck off then start it again after driving to town the ac blows hot air out up to 4 minutes (yes I timed it) before it starts cooling. I took it to a local repair shop and the first time they said it only had half the freon it needed. The charged it and off I went. Same problem. The second time they informed me the fan clutch was not engaging and replaced it. I picked it up and the first time it was turned off and back on it had the same problem. I am scheduled to take it back to the same repair shop on Monday.
View 1 RepliesThere used to be a audible pop in my stereo speaker when my heat would kick on. Now there is not. My heat did this last winter around the same time. I checked Fuses. The blower blows, but it just blows cold air. It could be a thermostat, or a clogged heater core. 1997 Ford Ranger 2.3L ...
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