AC churp
AC chirp HELP!!
So I have a funny issue that may just be me being nitpicky. When I turn on the AC I hear a funny dove like chirp from the passenger side. It increases as I increase speed. It seems to go away after I'm going 35-40 but it may just be the car noise that drowns out the dove chirp. Thoughts?
Last edited by symaxwell; Apr 10, 2013 at 10:50 PM.
Super Moderator
Joined: Jan 2011
Posts: 16,322
Likes: 88
From: Savannah Georgia
Inside would be the fan bearing, fan motor is under passenger dash. But same fan for heat or AC, so running the vent should produce the same noise, but should not follow engine rpm. Under hood would be pulleys or AC clutch, which increase with engine rpm. With engine running you can hold a yard stick flat against your ear, and touch it to various things like the compressor, and hear internal noises more clearly.
Chirping on a D2 should also be a front drive shaft about to split open and flail tranny until it breaks. I don't know if the small change in engine load from AC on is making yours make noise. The shaft certainly increases speed with rpm.
Chirping on a D2 should also be a front drive shaft about to split open and flail tranny until it breaks. I don't know if the small change in engine load from AC on is making yours make noise. The shaft certainly increases speed with rpm.
Last edited by Savannah Buzz; Apr 11, 2013 at 12:12 AM.
Rock Crawling
Joined: Nov 2012
Posts: 315
Likes: 1
Do you feel any vibration in your truck when you are going 30-40mph? I have a chirp coming from my vents that sounds like a bird when ac or my heater is on, it occurs most of the time when i hit the brakes and sometimes it just randomly does it. When I increase the fan speed on the climate control the chirp goes away. I'm 99.9% sure that my chirp sound is coming from my blower motor, and it is the blades inside spinning. Try turning your AC on low and set the fan speed to high and see if the chirp goes away. That is a good way to see if its the blower motor. Also common sense just hit me...which doesn't happen very often lol. If the chirp sound is occurring while your truck is not moving then you can rule out your drive shaft, for the drive shaft only spins if the wheels are moving.
Pro Wrench
Joined: Dec 2012
Posts: 1,364
Likes: 31
From: Placerville, CA USA
Do you feel any vibration in your truck when you are going 30-40mph? I have a chirp coming from my vents that sounds like a bird when ac or my heater is on, it occurs most of the time when i hit the brakes and sometimes it just randomly does it. When I increase the fan speed on the climate control the chirp goes away. I'm 99.9% sure that my chirp sound is coming from my blower motor, and it is the blades inside spinning. Try turning your AC on low and set the fan speed to high and see if the chirp goes away. That is a good way to see if its the blower motor. Also common sense just hit me...which doesn't happen very often lol. If the chirp sound is occurring while your truck is not moving then you can rule out your drive shaft, for the drive shaft only spins if the wheels are moving.
How to service the Blower Motor.
https://landroverforums.com/forum/di...llation-55530/
EDIT: Just an FYI, my motor is still quiet and has not made a peep since the oiling.
Last edited by SuperSport; Apr 11, 2013 at 12:57 PM.