I just picked up a 78 F150 Ranger XLT with a 351M in it this past friday. I am absolutely in LOVE with her. She is a great solid truck. One issue I am having though is that she blows hot air out the vents over the hump but nothing is coming out the top of the dash. I am guessing that i will have to take the dash off and clean out the box check the door etc. What did you do to rectify?
View 3 RepliesMy A/C is blowing cold but only thru the defrost vents. First it was blowing normally from the dash but during acceleration or under load, the a/c would randomly blow from any vent, from the floor, dash, defrost. Now that stopped and it only blows from the defrost vents above the dash-board.
1997 F-150 XLT, 4.2 Liter, V6, manual transmission.
My 02 Mountaineer doesn't have any air flow volume out of the heat, defrost, or a/c vents. The temp will change from hot to cold and the air direction will also change from floor, dash, windshield, etc. The a/c recirculation door also seems to be working. The fan sounds as it is running very fast, just not putting out any volume. What should I look for?
View 3 RepliesI have a 2008 F350 and there is nothing blowing out of the vents or defrost for AC or heat. It doesn't matter what fan speed is set. Would this indicate a blower motor? Where exactly is it located and how to change?
View 8 Replies2006 F250 with the dash controlled 4x4. I typically keep the front hubs locked on this truck. I have recently noticed that when shifting into 4x4 that the a/c or heat will switch from blowing out of the vents to blowing out of the defrosters. Any clues how to fix this?
View 1 RepliesI have a 2002 SuperCrew - I've recharged the coolant - I can fill the air coming from the top defrost vents.
No matter what button I press on the air controls and can't get the air to switch to the vents. What the problem could be?
1994 f150. When i use the max a/c setting, sometimes after a few minutes I hear a little thud and then all the air starts coming out of the defrost vents. This doesn't happen when using the regular a/c setting.
View 2 RepliesCar do this? Seems odd to me. Iss there a way to disable via VCDS?
View 22 RepliesI have a 86 f250 with rebuilt 302, new radiator, new hoses and heater core. I know the cold to hot selector works to open the door. now the ac works great although my heat is not working properly. I can put the defroster on with heat and the blower in the engine compartment comes on like normal. Now the problem is that we i put it on heat the blower in the cab does not blow air through any vents. I just purchased this vehicle and not really sure how everything works.
Funny thing also when the ac is on i turn the blower on low and its really high then the high is really low (its like to switch is working backwards) not sure if that has anything to do with it. Then when I was looking in the engine compartment i noticed the wiring harness has a plug going to the blower, then one plug to what looks like a heat strip of some sort, then someone took two oranges wires and wire nutted together to get the engine compartment blower to work. So now I'm wondering if I am missing something there??? Here's a pic of the engine compartment.......
I recently found out that my check valve needs replacing for my a/c vacuum. The problem came from when I turn my AC on, the panel vents do not work. Instead, the Defrost vents push the AC air out. How to replace the vacuum check valve? I would like to avoid the high cost of dealership prices.
View 14 RepliesI have an ambient temp switch connected to the vac port on my throttle emissions control solenoid for my 2150 carburetor. It's a 78 F-150 with a 5.0L 302, automatic 2WD. Would a bad ambient temp switch screw up my idle? I've disconnected the vac hose and it won't idle at all, and it does the same thing when I disconnect the two wires from the ambient temp switch. If I leave everything alone, I can get the idle down to around 1800rpm, but any lower than that and it stalls.
Is it possible to swap out this throttle emissions control solenoid with another type? I've looked everywhere and can't find an exact replacement, and I have no instructions on how to tune it.
Dash lights are not working in my 78 F150. The climate control lights come on and are dimable with the headlight switch. I pulled the cluster and the Blue/Red wire has voltage. Which might be the ground? The Seat belt light comes on at start and the left turn signal will blink. What am I missing. Oh the cluster is deteriorating. some of the bulb holes are chipping out.
View 1 RepliesAbout mid-October I noticed when it as real cold out and I had the heat running whenever I would come to a stop I noticed there is very little to no heat coming from the vents, despite the engine being warm and running at operating temps. At the time I was working for a shop and I asked one of the mechanics what the problem was. He said that it was the radiator not having enough coolant.
Turns out when we pulled the cap the coolant res, was just about bone dry. So we added in about a gallon or so of coolant with the truck running and sure enough at idle the heat was back.
Fast forward to the last couple of weeks and when I am sitting at idle again same thing happens. So somehow the engine is losing coolant. Its not ending up in the oil (no white on the dipstick) and there is not a coolant leak. As it sits there is 255,300 miles on the truck now. 1999 5.4L F150....
I noticed a couple weeks ago after starting the truck and turning on the a/c that nothing was coming out of the vents. I found it odd when after driving a few miles the a/c kicked in and started blowing cold air. Today I needed to put on the defrost and same thing, nothing came out of the vents. I drove around for a while hoping it would kick in just like the a/c did but nothing. I did check the fuses and relay. When you turn the control either to heat or a/c you can hear a clicking sound under the hood. It's trying to engage but nothing is coming out of the vents.
View 12 RepliesRecently I noticed that I still have hot air coming through the vents with the climate control system completely off. I can tell that the fan is off because it's not blowing through the vents but the vents are very hot.
View 13 RepliesThe other morning I started my car up and no heat or air would come out of my vents. The night before I had to drive through a blizzard and my car was completely packed with snow. The climate controls function normally, everything is lighting up when i select a button, but no air is coming out of the vents (rear defrost and seat warmers work fine). There is no sound of the blower starting when I turn the air on, hot or cold. I live in Northeast Ohio so we currently have several inches of snow and it's well below freezing outside. I live in an apartment so my car is outside 24/7 between being here and at work. I looked up a bunch of posts on here and other websites to try to figure it out. I ended up taking my cabin filter out and it is completely packed with snow. So i vacuumed out the snow that was left in the cabin filter housing as far as i could reach. I also unpacked as much snow as possible from wheel wells seeing as the HVAC vent goes to there, and the blower still doesn't work.
What I am guessing, which I could be completely wrong, is that the HVAC vent is completely packed with snow and it's not letting the blower turn. I guess my question is does that seem remotely possible or is it something else completely? My climate control doesn't work on the highest setting so I don't think its the relay I read about and my heater has been working fine with no noises or anything and I don't believe it would just go bad out of the blue.
2012 Passat SE 2.5
Snap, crackle and pop sound coming from the vents in the front and rear when the heat is on. It sounds like rice krispies with milk.
View 4 RepliesThe vents in my 2002 Prius are starting to become problematic. When I turn on the heat, the air is not coming out. When I hit the glove compartment, the air starts to come out, but it is very low and stops after a minute or two. I just want to know if the blower motor is dying, and how to replace it, if it is really the blower.
View 1 RepliesI have a 1999 Dodge Durango SLT 5.2L (318) 4x4. My problem is that there is no air or heat coming from any of my vents. It started out where there was no air coming out on the lowest setting. Then a few days later, no air from the next highest setting. It then continued to where absolutely no air coming from any setting. I don't know where to even start looking.
View 3 RepliesI have a 2003 GMC Envoy XL. There isn't any heat or air conditioning coming out of the overhead vents. My mechanic tells me it is a control head module. I would like to try and fix this myself. I don't know where this module is located on the vehicle. It seems I could just remove the defective one and replace it with a new part. Are these modules easy to find in part stores and how expensive is this part?
View 2 RepliesI have a 2006 Azera Limited and I am not getting any heat coming out of the passenger side vents. It will blow cold air so I know the blower motor is working and pumping out cold air, and I am getting heat on the drivers side just fine. With the cold weather now settling into Ohio, I wanna jump on this issue before it becomes a bigger problem.
View 1 Replies