Go Back   The 75 and ZT Owners Club Forums > The 75 and ZT Owners Club Forums > Technical Help Forum
Register FAQ Image Gallery Members List Calendar Mark Forums Read
Notices

Reply
 
Thread Tools Display Modes
Old 12th July 2019, 14:49   #1
macafee2
This is my second home
 
Rover 75 Saloon & Tourer

Join Date: Sep 2012
Location: Lincoln
Posts: 14,890
Thanks: 1,630
Thanked 3,032 Times in 2,181 Posts
Default common air con failure reasons

Last week I had my air con re-gassed, the mechanic at the Honda dealer thought a faulty relay was the issue. Having tested it I could not agree with that. I have done 200'ish miles and air con still ok.

Went back to dealer today for a check to see if a leak could be found.
Chap thought there was dye on the condenser rad but I could not see it.
I did notice some bubbling at one of the valves in the aluminium pipe when the blue cap was removed but this soon stopped.

I am aware if air con not used seals can dry and leak. If re-gassed and used do they re-seal?

Are there common faults on the diesel for air con failure?

I think I will buy an ultra violet light, remove front bumper and see if I can see anything. If I cant and it fails again then a mobile air con mechanic as advised will be my next port of call.

macafee2
macafee2 is offline   Reply With Quote
Old 12th July 2019, 14:56   #2
Dawn
I really should get out more.......
 
MG ZT 180+ auto

Join Date: May 2016
Location: Ilkeston, Derbys
Posts: 2,743
Thanks: 285
Thanked 1,128 Times in 504 Posts
Default

Be careful who you get. I booked a guy with great reviews for 3pm today. Its nearly 4 and he has yet to appear or answer me.
Dawn is offline   Reply With Quote
Old 13th July 2019, 11:55   #3
COLVERT
This is my second home
 
R75 Saloon.

Join Date: Feb 2009
Location: France/or Devon.
Posts: 14,003
Thanks: 3,851
Thanked 2,167 Times in 1,816 Posts
Default

Quote:
Originally Posted by macafee2 View Post
Last week I had my air con re-gassed, the mechanic at the Honda dealer thought a faulty relay was the issue. Having tested it I could not agree with that. I have done 200'ish miles and air con still ok.

Went back to dealer today for a check to see if a leak could be found.
Chap thought there was dye on the condenser rad but I could not see it.
I did notice some bubbling at one of the valves in the aluminium pipe when the blue cap was removed but this soon stopped.

I am aware if air con not used seals can dry and leak. If re-gassed and used do they re-seal?

Are there common faults on the diesel for air con failure?

I think I will buy an ultra violet light, remove front bumper and see if I can see anything. If I cant and it fails again then a mobile air con mechanic as advised will be my next port of call.

macafee2
If the seals are worn a re-gas does not repair them.

Like saying---put a bit more air in my worn tyres and get a new tread.----
COLVERT is offline   Reply With Quote
Old 13th July 2019, 16:23   #4
grivas
I really should get out more.......
 
grivas's Avatar
 
Rover 75 CDT Club Tourer

Join Date: Nov 2006
Location: Milky Way
Posts: 2,367
Thanks: 105
Thanked 513 Times in 382 Posts
Default

Quote:
Originally Posted by macafee2 View Post
Last week I had my air con re-gassed, the mechanic at the Honda dealer thought a faulty relay was the issue. Having tested it I could not agree with that. I have done 200'ish miles and air con still ok.

Went back to dealer today for a check to see if a leak could be found.
Chap thought there was dye on the condenser rad but I could not see it.
I did notice some bubbling at one of the valves in the aluminium pipe when the blue cap was removed but this soon stopped.

I am aware if air con not used seals can dry and leak. If re-gassed and used do they re-seal?

Are there common faults on the diesel for air con failure?

I think I will buy an ultra violet light, remove front bumper and see if I can see anything. If I cant and it fails again then a mobile air con mechanic as advised will be my next port of call.

macafee2
So what did the guy actually do?, he diagnosed a faulty relay, then what?
grivas is offline   Reply With Quote
Old 13th July 2019, 16:26   #5
grivas
I really should get out more.......
 
grivas's Avatar
 
Rover 75 CDT Club Tourer

Join Date: Nov 2006
Location: Milky Way
Posts: 2,367
Thanks: 105
Thanked 513 Times in 382 Posts
Default

Quote:
Originally Posted by Dawn View Post
Be careful who you get. I booked a guy with great reviews for 3pm today. Its nearly 4 and he has yet to appear or answer me.
these people are busy this time of year, if he hasn't bothered to ring you avoid is my advice.
grivas is offline   Reply With Quote
Old 13th July 2019, 17:39   #6
macafee2
This is my second home
 
Rover 75 Saloon & Tourer

Join Date: Sep 2012
Location: Lincoln
Posts: 14,890
Thanks: 1,630
Thanked 3,032 Times in 2,181 Posts
Default

Quote:
Originally Posted by grivas View Post
So what did the guy actually do?, he diagnosed a faulty relay, then what?
As we could not agree on the condenser rad being at fault he did no more.
Good news is I was not charged for the work done last week or this.

I will take the front end off, get an ultraviolet light and see if I can see anything. If not then an air con specialist will be needed

macafee2
macafee2 is offline   Reply With Quote
Old 13th July 2019, 19:39   #7
trikey
Premium Trader
 
trikey's Avatar
 
Rover 75

Join Date: Nov 2010
Location: Devon
Posts: 33,710
Thanks: 8,837
Thanked 14,831 Times in 8,030 Posts
Default

The most common causes I have come across are

1. Low speed fan not working
2. Condenser leaking due to age
3. No gas in system!
__________________
Lest we forget..
trikey is offline   Reply With Quote
Old 13th July 2019, 20:55   #8
Mickyboy
SERVICING AND DEALER DIAGNOSTICS
 
Mickyboy's Avatar
 
MG ZT CDTI 135 + & MGZT CDTI AUTO 160 & ROVER 75 TOURER CDTI 160 TROPHY YELLOW

Join Date: Aug 2013
Location: Hernebay
Posts: 4,331
Thanks: 818
Thanked 2,414 Times in 1,141 Posts
Default

Quote:
Originally Posted by trikey View Post
The most common causes I have come across are

1. Low speed fan not working
2. Condenser leaking due to age
3. No gas in system!
Condensers I’ve seen loads of them with fins missing mate, I’ve come to the conclusion that it’s a typical age related issue, they are even worse on the Peugeot’s I’ve dismantled.
Mick
__________________
[SIGPIC][/SIGPIC]
T4 Owner
Jobs done : new UBP, Spy hole mod, Rear hub(wheel bearing),plenum cleaned and emptied, Inline thermostat fitted,Full service, In car Digital tv/DVD Bluetooth Satnav etc, Replaced UBP, Restored headlights,Fixed airbag connection.replaced HP pump,replaced rear light seals,changed intercooler O rings.

Jobs to do: ,replace drivers lock,.
[/SIZE]
Mickyboy is offline   Reply With Quote
Old 13th July 2019, 21:01   #9
trikey
Premium Trader
 
trikey's Avatar
 
Rover 75

Join Date: Nov 2010
Location: Devon
Posts: 33,710
Thanks: 8,837
Thanked 14,831 Times in 8,030 Posts
Default

Quote:
Originally Posted by Mickyboy View Post
Condensers I’ve seen loads of them with fins missing mate, I’ve come to the conclusion that it’s a typical age related issue, they are even worse on the Peugeot’s I’ve dismantled.
Mick
Yes Mick, fins missing, cores bent and rotted away, best advice is to get a replacement from Jules if you suspect the condenser to be the issue.
__________________
Lest we forget..
trikey is offline   Reply With Quote
Old 13th July 2019, 21:13   #10
Dawn
I really should get out more.......
 
MG ZT 180+ auto

Join Date: May 2016
Location: Ilkeston, Derbys
Posts: 2,743
Thanks: 285
Thanked 1,128 Times in 504 Posts
Default

Thats what they said mine is. I messaged Jules yesterday but someone said he's on his holibobs!
Dawn is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 10:31.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright © 2006-2023, The Rover 75 & MG ZT Owners Club Ltd