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Discussion Starter · #1 ·
Fans kick in but engine idle stays the same. Had auxiliary drive belt changed with cambelt on Thursday, a/c compressor is defo running, hasn't been accidentally left off... any ideas? It had an official VW a/c service last year.
 

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Shiu,

Is yours clima or manual aircon ?

The compressor will always be running on later models, there is no clutch, the gas flow / compressor action is regulated by a bypass valve arrangement.

Sounds like something has not been reconnected after your belt service.

My bet is on either a temp sensor or pressure sensor, most likely pressure sensor which is located at the cambelt end of the engine bay (near the suspension turret).
 

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Discussion Starter · #5 ·
Cheers fellas, mine's manual a/c, will have a look in a mo. Colin how do you know so much about this mundane stuff, I only know about things that come in funky colours or cost far too much money for what they are. I've been thinking it's got to be something was left disconnected, last time it worked it worked absolutely great.
 

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Cheers fellas, mine's manual a/c, will have a look in a mo. Colin how do you know so much about this mundane stuff, I only know about things that come in funky colours or cost far too much money for what they are. I've been thinking it's got to be something was left disconnected, last time it worked it worked absolutely great.
I know stuff beacuse somewhere along the line I've encountered those sorts of problems, not neccessarily with the Golf though.

Could be a little more tricky with maual A/C as vagcom will not have anything to talk to.
 

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Revo getting it too hot and bothered? [;)]
Shu do you have revo on ur 1.6?

And does your air con need re-gasing maybe?
 

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Discussion Starter · #8 ·
Revo getting it too hot and bothered? [;)]
Shu do you have revo on ur 1.6?
Yes [:)]

No the air-con had an official VW service last year when they were running a special offer. I'm almost certain now that it was just something left disconnected, so I'll get them to look at it next week, or if I have time tomorrow I'll check my Haynes (for what it's worth) to see if it's anything obvious.
 

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Shui, if you would like VAGCOMing, I'm not working Monday so could pop down to you to check your car out.

I've also read in the past, that A/C compressor switch off when the throttle is fully opened, maybe REVO is causing this to happen ?

If not, I've got around 4 cars that need a re-gas, so I was going to see if a deal could be done on the work, if you would like to join in ?

Anyone know of any good A/C specialists around the Kingston/New Malden area ?
 

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Discussion Starter · #11 ·
Russ that'd be great if you could. I don't park anywhere near work though due to political and vandalism reasons (that time you saw it on the forecourt all of "mangement" were out of the office so could get away with it...), shall I come to you after work (PM me your address) or if you'd like to meet at Krispy Kreme (I park at my aunt's house near there) I'll get ya some doughnuts for your trouble [Y]

I don't know of any a/c specialists, only those ones that visit car parks in vans with their equipment. I had my a/c serviced at John Ashley last year (so I don't think mine needs a re-gas just yet, when I last used it recently the air was nice and cold) but they'll just charge 4x.
 

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I'm sure vagcom would not be of much benefit with it being manual aircon.

To be operational the following all need to be in order;

Gas in system

F163; A/C thermal cut out switch, two terminals (it's either on or off)

F38; Ambient temperature switch.

The F163 and F38 are wired in series, so bearing that in mind when you've got your tester on it.

F129; combined high and low pressure switch. (most likely as it's right at the cam belt end), combind unit with simple on/off switches but note they are on two separate circuits and it looks like the low pressure side is normally closed circuit, the high pressure side open circuit, bear this in mind when testing.

To check for gas and note this is illegal; simply remove one of the filler cap covers and depress the valve for a fraction of a second, if 'stuff' escapes there is obviously gas in there.
 

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Hi all,

@ ct.p

I have a golf v6 (climatronic aircon) which is blowing hot air, had the gas checked, no problem found. They said there is no electrical feed getting to the motor.

What would you recommend ? Take to VW, or can you give me any ideas of what to look for on the air con motor ?

Thanks

Ian
 

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No suggestions others than what is described above.

Also are your fans working ? Do a search on threads by Andymac, he is the fan guru on here.
 

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Thanks for the reply.

Yer both fans work (looked at the big al mod), im a little confused about the compressor always being active..

If it has no clutch then theres is no need for an electrical feed. So it looks like my air con motor is dead then :(

Really could do with a diagram for the air con system.

Thanks any how

Ian
 

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I have a V5 with Climatronic. Fans don't kick nor does the compressor..! Have been told its electrical.

I'm looking for someone with access to Vagcom to give it the once over..!

Anyone...? I'm in Staines (Middlesex) but will definately travel to get the damn thing sorted.

Cheers

Lee

Also have a compressor/clutch spare if anyone is interested.
 

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My air con is doing the same at the moment. I bought a pressure guage from Halfords to see whether it needed re-gasing but it shot right around into danger and told me I needed to seek proffesional help. I already knew that lol but it doesnt help my car much!

The guages are about ?20 Shiuming, alot of money to fork out just to see whether it needs re-gasing or not I know but it might help.
 

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I recently got one of those Halfords gauges too, along with a gas top-up bottle.  Mine was in the blue (NORMAL) even though I thought the air ought to be colder. It's handy to be able to check the gas pressure yourself even if it you don't do it more than once a year.
 

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OK from the point of view on all this air con faults it could be a number of faults.

Whoever started this topic said his air con was serviced last year but when did he last have it working?

Your supposed to use it for approx 10 mins at least every month if not then the seals dry out and the gas leaks out the system.

To the people saying the compressor is engaged at all times part of the compressor will rotate at all time but they use a magnetic clutch to bring the pump into use. If it ran constant it would over pressure and blow a hole in the system somewhere.

Main reason that AC will not cut in is due to low gas levels as its designed as a safety feature so you dont run the risk of running the compressor dry and siezing it up.
 

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Discussion Starter · #20 ·
OK from the point of view on all this air con faults it could be a number of faults.

Whoever started this topic said his air con was serviced last year but when did he last have it working?
Just days before I noticed it had stopped. I know about running it periodically to keep it healthy.

As it happened, it was the Revo remap that knocked it out - the code that was loaded was originally developed for a model that had Climatronic, not manual a/c. Revo dealer coded it back for me and it's nice and chilled again now [Y]
 
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