quick A/C blower question
Thread Starter
Joined: Jun 2006
Posts: 596
Likes: 0
From: San Antonio, TX
quick A/C blower question The last two time i use my AC, it starts nice and strong, but then there is a noise coming from the blower motor, and the air comes out at a much slower rate. i have it at full blast and it feels as if its in the first or second setting. does crap easily get into the blower motors, or might it just be giving out?
Pull the blower motor out and check for trash in the blower wheel or in the case, sometimes plastic bags etc get sucked up in there.
Does it blow on every speed? If so the resistor is good, when the resistor goes out they will only blow on high speed.
It is possible the blower motor itself is going bad but that would most likely blow the fuse due to excessive current draw.
Does it blow on every speed? If so the resistor is good, when the resistor goes out they will only blow on high speed.
It is possible the blower motor itself is going bad but that would most likely blow the fuse due to excessive current draw.
Thread Starter
Joined: Jun 2006
Posts: 596
Likes: 0
From: San Antonio, TX
yea it blows in every speed, slow but progressively as i change speeds. yeah the resistor is ok, hopefully its just mesquite leaves or the little seed pods that they drop
Thread Starter
Joined: Jun 2006
Posts: 596
Likes: 0
From: San Antonio, TX
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
My wife's car does this occasionall. Esp on longer trips. I have pulled the blower motor out and checked for leaves, etc. I am wondering if it is some sort of vacuum leak or other problem. It sure is aggravating.
I see blow fuses and bad relays frequently when electric radiator/condenser cooling fans go out..
What kind of car? If it has a vacuum controlled mode door then the door could be sending some of the airflow out other vents that it shouldn't be. If it tends to have these issues more while under acceleration and not during decel or idle then you mostlikely have a vaccum resevoir leaking. If it is electronically controlled I would look at the a/c system, the evap core could be starting to freeze and cutting down airflow, this could be caused by a faulty low pressure switch, faulty thermostatic swithch, or low freon. Also it could be that the motor is giving out after being ran for a while, but this is pretty unlikely, electric motors usually work or don't, and if they start dragging due to too much load or bad bearings etc you will generally have electrical problems like popped fuses or burned connectors, when the load goes up so does the current draw from the motor. The circuit isn't built to handle more than the motor draws when it's healthy so you will see signs.
I see blow fuses and bad relays frequently when electric radiator/condenser cooling fans go out..
I see blow fuses and bad relays frequently when electric radiator/condenser cooling fans go out..
I still wonder if it could be something in the case blocking it, but I have torn into that twice to check and couldn't find a thing.
Its an 02 Z28. the blower is still going, but very little air is coming out anywhere. I have started bringing tools along. I pulled it apart on I45 once and disconnected the vaccum harness behind the glove box to see what was going on and couldn't get anywhere. Sometimes shutting it off and letting it sit for a few minutes makes a difference. Sometimes it needs to sit for an hour before it goes back to normal. It is so intermittent I can't just decided to spend some time working on it.
I still wonder if it could be something in the case blocking it, but I have torn into that twice to check and couldn't find a thing.
I still wonder if it could be something in the case blocking it, but I have torn into that twice to check and couldn't find a thing.
Its an 02 Z28. the blower is still going, but very little air is coming out anywhere. I have started bringing tools along. I pulled it apart on I45 once and disconnected the vaccum harness behind the glove box to see what was going on and couldn't get anywhere. Sometimes shutting it off and letting it sit for a few minutes makes a difference. Sometimes it needs to sit for an hour before it goes back to normal. It is so intermittent I can't just decided to spend some time working on it.
I still wonder if it could be something in the case blocking it, but I have torn into that twice to check and couldn't find a thing.
I still wonder if it could be something in the case blocking it, but I have torn into that twice to check and couldn't find a thing.
Not that I am aware of and that probably wouldn't help for very long. I wouldn't think it would cost much for a new one.
