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 22nd May 2019, 20:19   #1
Russp
Loves to post
 
MG ZT

Join Date: Dec 2018
Location: holt
Posts: 296
Thanks: 219
Thanked 112 Times in 49 Posts
Default Aircon regas ?

After my earlier thread about air-conditioning not working I've now replaced the fan and resistor.
I did not disturb the air-conditioning circuit and the fan is now working but its not blowing cold.
It had a regas a few months back and was working fine until the fan went
As the system probably overheated before the problem was found , will it need regassing again or could the condenser be at fault?
Russp is offline   Reply With Quote
Old 22nd May 2019, 20:41   #2
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

Probably only coincidence.---

Did you have your Air-Con leak tested before getting it recharged ??

Must have had a leak that needed fixing because of the first loss of gas.
COLVERT is offline   Reply With Quote
Old 22nd May 2019, 20:44   #3
Russp
Loves to post
 
MG ZT

Join Date: Dec 2018
Location: holt
Posts: 296
Thanks: 219
Thanked 112 Times in 49 Posts
Default

It was working OK for a few months
Do they not leak test the system when regassing ?
The condenser looks a bit ropey could this be the source of the leak?
Russp is offline   Reply With Quote
Old 22nd May 2019, 20:59   #4
trikey
Premium Trader
 
trikey's Avatar
 
Rover 75

Join Date: Nov 2010
Location: Devon
Posts: 33,711
Thanks: 8,837
Thanked 14,831 Times in 8,030 Posts
Default

It is usually the condenser Russ, drop Jules a PM, he stocks new ones.
__________________
Lest we forget..
trikey is offline   Reply With Quote
Old 22nd May 2019, 21:03   #5
Russp
Loves to post
 
MG ZT

Join Date: Dec 2018
Location: holt
Posts: 296
Thanks: 219
Thanked 112 Times in 49 Posts
Default

Cheers Andy
Not looking forward to taking it to bits again !
Russp is offline   Reply With Quote
Old 22nd May 2019, 21:04   #6
SCP440
I really should get out more.......
 
MG ZT-T 260

Join Date: Feb 2016
Location: Witney
Posts: 2,503
Thanks: 6
Thanked 910 Times in 571 Posts
Default

Quote:
Originally Posted by Russp View Post
Do they not leak test the system when regassing ?
Depends on who did it, I have heard of numerous places just putting some gas in to put some cash in there pocket.

The other problem a lot of places like Halfrauds and Kwik Fit have people who don't know how to use the kit so they just plug it in and when it warns there is a leak they just override the warning.

As soon as the ambient air temp goes above 20 degrees most A/C engineers are flat out so if you want it done quickly you pays your money and take your chances.

To do the job properly takes about an hour.
SCP440 is offline   Reply With Quote
Old 23rd May 2019, 06:51   #7
sewerman
Gets stuck in
 
MG ZT+ CDTi

Join Date: Feb 2014
Location: Wolverhampton
Posts: 632
Thanks: 166
Thanked 264 Times in 154 Posts
Default

Just had mine recharged at ATS with a Groupon voucher, mine lasts about 9 months before becoming ineffective there was 150g of gas in the system new it's about 500g I just get it filled every year

But talking to the chap who did it and he says the machine does a vaccum test and it's possible some pin holes are pulled closed so no leaks but the system when under pressure can force pin holes open , he didn't say why the machine didn't do a pressure test , but I think some air con specialists do?
sewerman is offline   Reply With Quote
Old 23rd May 2019, 07:00   #8
SCP440
I really should get out more.......
 
MG ZT-T 260

Join Date: Feb 2016
Location: Witney
Posts: 2,503
Thanks: 6
Thanked 910 Times in 571 Posts
Default

To do the job properly you should do a pressure test with Nitrogen and a vacuum test, if either are not done you are not doing it correctly.

Not heard of the pin hole thing before but every day is a school day, it is usually seals drying out, a failing hose, joint or component.

Any car that can not hold its charge for at least 18 months has a leak that needs fixing, I have worked on cars that still have a good charge of refrigerant after 10 years and they still work.

If a recharge was several hundred £'s I suspect a lot more cars would be repaired or have no A/C.
SCP440 is offline   Reply With Quote
Old 23rd May 2019, 08:12   #9
Russp
Loves to post
 
MG ZT

Join Date: Dec 2018
Location: holt
Posts: 296
Thanks: 219
Thanked 112 Times in 49 Posts
Default

The condenser looks pretty rough a lot of the fins have dropped out presumably as a result of it getting hot with no fan so I've ordered another one
Russp is offline   Reply With Quote
Old 23rd May 2019, 10:56   #10
KeithA
Loves to post
 
Rover 75 Conny Tourer Auto

Join Date: Mar 2016
Location: Essex
Posts: 347
Thanks: 75
Thanked 94 Times in 71 Posts
Default

Quote:
Originally Posted by Russp View Post
The condenser looks pretty rough a lot of the fins have dropped out presumably as a result of it getting hot with no fan so I've ordered another one
Both of mine have required a new condenser due to deterioration and small leaks - I'd guess there is a good chance you require one.
__________________
2003 Tourer, Connoisseur Auto
KeithA 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 22:16.


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