Skip the auto shop - Our mechanics make house calls

Q: air conditioning

asked by on

So my air conditioning hasn't been working right.. it had when out.. my uncle fixed it but when he fixed it, he fixed it to where it would turn on and off but would have to be plugged in and unplugged from under the dashboard. my fan doesn't turn on and of by the knobs. it went out again. my uncle had to replace my alternator and for some reason my air conditioning started working again but still had to be plugged in and unplugged from the under the dashboard. when ever I hit a bump or sometimes don't hit a bump the fan make this rattling sound and the vibration is hard to where you feel it on the wheel , gas, brake, and floor. its very difficult to drive with the air on when alone cause then when it starts making the loud noise and vibration I have to pull over to go under the dashboard to unplug it. especially with it getting cold is very hard. I would like to have my fan working right and to be able to use the knobs to turn the air and heat off and on..

My car has 140000 miles.
My car has an automatic transmission.

Hi there. From the description you have provided, there is a combination of problems concerning your vehicle’s air conditioning system. The electrical bypass your Uncle incorporated, should be corrected first. Not knowing, what was done electrically to bypass the controls requires inspection. It could be, the a/c control panel is faulty. The loud noise and vibration from the fan, is most likely, a bad blower motor. I recommend your vehicle’s air conditioning problems be diagnosed and repaired by a certified technician from YourMechanic.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. air conditioning

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Fuel and temperature gauges broken

Hello. There are a couple of reasons why this could be happening. One being that the instrument cluster is malfunctioning where the fuel gauge and temperature gauge are located. There is a circuit board on the back of your instrument...

Q: Air is blowing cold but have to toggle the switch for it to work.

In some cases, the air conditioning toggle switch can become dirty or obstructed with debris; which can cause the symptoms you're describing. The best way to diagnose and repair this issue is to have one of our professional mechanics...

Q: I'm buying a 2002 Camero, v-6 from my brother whom didn't drive it much.

A blown head gasket may cause a number of different symptoms. A head gasket that fails between cylinders will generally cause a misfire and potentially compression leaks from one cylinder into another. Low compression will eventually result in a rough...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.