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View Full Version : Strange moaning noise, should I be worried??



freemander
7th March 2014, 07:53 PM
Hi all,

Freelander 2 2007 3.2ltr 140,000klms and running perfect.

It was a slightly cooler morning after a long hot summer with dew across the windscreen, car started perfectly like usual. I cleared the screen with the wipers and drove out of the drive off to work. The front windscreen started to slightly fog up, so for the first time in a long time, I placed the air conditioning on demist and like clock work, the windscreen cleared. Upon driving a few Klms further on a straight road, I heard what I thought was a groaning noise in tune with the speed of the engine, the sound like a power steering pump running dry. My heart skipped a beat as the noise got louder every minute I drove the car, so I turned off the radio, and continued to listen. To my disappointment, the moaning was getting louder as it kept in tune with the speed of the engine, so I turned off the air conditioning and fan to identify what was happening and then.... complete silence, the moaning had vanished. I immediately thought air conditioning compressor had pooped itself but just to be sure, I turned it back on to see if the noise would return however, the silence continued throughout the duration of my journey as if nothing was amiss. When getting to work, I started and stopped the engine, turned the air conditioner on and off, vented the screen then back to auto climate control and everything continued like clockwork. I called past my mechanic and told him the story and he immediately thought compressor till I told him the noise has now disappeared. His faced dropped with confusion and was surprised to see the compressor working as it should. He told me to keep an eye on it and he will check further next service. Car has operated as it should for the rest of the day, so my question is, is this a Land Rover thing with the i6 engine, has anybody experienced anything similar and most of all, should I be worried??

Your thoughts are greatly appreciated!!!

John

Scouse
7th March 2014, 08:57 PM
I don't know how the FL2 A/C compressor is set up but is it possible some dirt built up in the compressor clutch which worked it's way out after you operated it then turned it off?

jx2mad
7th March 2014, 09:13 PM
The guy on the nudge bar must have fallen off somewhere:D:D

freemander
7th March 2014, 09:24 PM
I don't know how the FL2 A/C compressor is set up but is it possible some dirt built up in the compressor clutch which worked it's way out after you operated it then turned it off?


Thanks for your reply Scouse, yeah that's what I'm thinking or hoping may have been the cause...

freemander
7th March 2014, 09:27 PM
The guy on the nudge bar must have fallen off somewhere:D:D


..........And all this time I thought it was a hump in the road :-O

camel_landy
8th March 2014, 07:07 AM
Turn the radio up and the noise will go away... :D

M

freemander
8th March 2014, 09:37 PM
Geez, thanks for the advice camel Landy :-)

Turns out it may have something to do with the a/c equalising with the outside temperature causing the compressor to deliver a low output therefore causing the groaning sound. The way to stop it is to turn the temp up or down slightly to de-equalise the air temp or as you say, turn the radio up, the things you learn!?!?!

Scouse
8th March 2014, 10:49 PM
In that case it's probably the TX valve. One of my cars does that from time to time, usually when the A/C cuts back in.

mikehzz
9th March 2014, 08:20 AM
My Jeep does that and it's so loud it sounds like the car is farting. It's got something to do with the blend doors inside the dual climate control ducts cycling and getting out of whack.

freemander
9th March 2014, 09:29 AM
Seems all good now, yeah, it sounded like the car had an upset stomach developing into a fart, all in tune with the rev of the engine, at least it didn't smell lol