Ever since I bought the truck a few years ago I noticed there is hardly any air blowing out of the vents, in fact I can barly feel the air moving. I know the vacuum line to operate the doors is hooked up, and the blower motor is working fine. The cable operated door is moving correctly also. I plow snow in the winter and when I'm plowing the parking lot at work it will roast me out of the truck, but once I hit the road to move to the next job it gets cold again. The thermostat is working fine also. Any ideas why the air barely moves?
An expert who has achieved level 3 by getting 1000 points
An expert that got 10 achievements.
An expert that got 5 achievements.
An expert whose answer got voted for 100 times.
Re: no air coming through the vents
Sounds like the door that brings in fresh air is not closing enough so when you get to moving it is not letting the cab recirculate the inside air and bringing in some from the outside which comes from the bottom of the windshield on the outside. along with when you get to hitting the gas going down the road you might be loosing a little vacuum and that door going to your vents might close a little.. ? what you thinkin? just a few ideas might not be a fix though thanks Jerry
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones). click here to download the app (for users in the US for now) and get all the help you need. Good luck!
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Do you have an AC pollen and dust filter? If so it is likely plugged and no air flow is getting through. Another cause of this is that the AC condenser core inside the dash is plugged with dirt and leaf matter (cars without any filter) I really need the make, model, year to be more precise.
Sounds like a faulty blower motor, however it could be a bad connetion somewhere. The next time it doesn't blow, tap the blower motor lightly with a hammer or the handle of a screw driver. If it starts up, you definatly have a motor with bad brushes, and the easiest thing to do is replace it.Good luck , and contact me with any furthur questions.
From what I hear it is a vacuum line issue. Mine is doing the exact same thing. So, I am going to get a diagram and try checking the vacuum lines to see if any are loose or tore
I go under the dash and feel the air flowing out the floor and it is coming out of the defrost, also. I noticed under the drivers side today that air is flowing and there seems to be a gap in between a part under there. There was some material stuff I saw around the edge of it that sticky brown stuff and it sometimes before came out my vents all the time. Anyways, not sure if my air is just not sealed good to blow out the vents but it is something that happened not long ago and we've not done anything under our dash area.
That sounds like a vacuum leak if you have a car that uses vacuum hoses to move the damper for the HVAC system. Newer cars have very few vacuum lines generally, so it might not be too hard to find the one thats bad, if that's the problem.
Hello msbrig, This is a REAL SWAG
(stab in the dark... (a bit reasoned))...
Confession... I'm no GM expert... but General Motors & FRIDGIDAIRE
are the "GREATS" in automotive A/C.
This is the BEST DOCUMENTED QUESTION I have
I hope I am not doing a disservice by attempting an answer...
If your vents blow al any time... you ought disregard their behavior.. Likewise temperature controls...
and DUAL EVAPORATRS... front & rear...
The fact that your troubles are intermittent in the FRONT & REAR is a really great SYMPTOM...
You are MOST LIKELY looking at only two POSSIBLE PROBLEMS....
1. - Either your CHARGE is insufficient to keep
the compressor running.(pressure switch monitored)
2. - You have a SATUATED DRYER which is allowing moisture to block your EXPANSION VALVES (internal ice) ...
External frosting is expected... a lot of externalFROST is an indication of #1. (above: low charge)...
A descent refrigeration person should be
able to tell you the HIGH and LOW pressure loads... and watch your system cycle for a few minutes... Which should be long enough to DETERMINE if you are experiencing
INTERNAL MOISTURE ISSUES...
Some folks ROUTINELY replace the ""DRYERS' (desiccant) I do not... I use brains, gauges, experience... and your vehicles HISTORY
I am here most every day... Push comes to shove... I have the
Lincoln Navigator... dual EVAPORATOR system...
(I'll pull the book & take a look).
You can comment me back...
I bought ALL THE TOOLS years ago... NOTWITHSTANDING my amateur standing... I only let the JAGUAR DEALER jam me for an $800 Schrader Valve since 1965 (Mustang(all the rest... I did myself)).
Happy to chat... comment me back.
(again: here daily)
Check the ac filter, it might be dirty and thats why it is not blowing out enought cold air. The filter is located under the wiper cover but behind the firewall on the passengers side. You access this by lifting the hood and removing the rubber type gasket that holds both together, right on top of the blower unit.