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#1 User is offline   Sarakina 

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Posted 04 May 2021 - 03:38 PM

Had the system re-gassed last year but no cold air. Had it re-gassed today and still not cold. The guy who gassed it said the clutch didnt seem to kick in?

Been told on the R5 there's a rubber donut of some sort on the rear of the compressor? A known failure point apparently. Anyone have any advice? Compressor was replaced in 2019 prior to my purchase, hoping its not that again.

I like this car but it has started to become a money pit now :blink:
2005 T1 2.5 SE Sport: with a growing number of new bits.

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#2 User is offline   NoobyT 

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Posted 04 May 2021 - 04:49 PM

Both the air con compressor and the alternator have a Gates coupling.

It's in two parts, one of which is rubber.

Because everything is gear driven at the front of the engine on the R5 and the V10 (which is two R5s) the Gates coupling is used to protect the engine in the event that the compressor or the alternator seize.

The Gates couplings should be regarded as service items and replaced every 100,000 Kms or thereabouts.

https://www.ebay.co....g-/184151935383
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VW Touareg models are as follows:
Generation 1: T1 is model 7LA and the facelift T2 is model 7L6
Generation 2: T3 is model 7P5 and the facelift T4 is model 7P6
Generation 3: T5 is model CR7

Models, engines, build years, etcetera - all essential reading - is here:
http://en.wikipedia....kswagen_Touareg and here:
https://www.autoevol...swagen/touareg/

The world's most comprehensive guide to buying a used Generation 1 VW Touareg [T1 & T2 2002-10] that could save you money [even more essential reading!] is here:
http://www.mytreg.co...at-to-look-for/


FYI: Porsche Cayenne 955 = T1; 957 = T2; 958.1 = T3; 958.2 = T4; 9YA = T5
Brilliant site with a lot of information and many photos of all the Cayenne models since launch! https://www.stuttcar...ls/cayenne/958/

#3 User is offline   Andrewgrale 

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Posted 04 May 2021 - 05:52 PM

Is the fan working?? On ALL speeds, especially speed 1??????

There is a wee resistor built into the resistor that activates the air conditioning system, if you have no speed 1 the air conditioning will not work
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#4 User is offline   Andrewgrale 

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Posted 04 May 2021 - 06:04 PM

View PostNoobyT, on 04 May 2021 - 04:49 PM, said:

Both the air con compressor and the alternator have a Gates coupling.

It's in two parts, one of which is rubber.

Because everything is gear driven at the front of the engine on the R5 and the V10 (which is two R5s) the Gates coupling is used to protect the engine in the event that the compressor or the alternator seize.

The Gates couplings should be regarded as service items and replaced every 100,000 Kms or thereabouts.

https://www.ebay.co....g-/184151935383


Have you any experience of changing the world's shortest fanbelts Nobby???

I doubt that mine have ever been changed and there's nearly 400k kms on it 😓
06 Touareg commercial auto 2.5 R5 19' Desert alloys and cloth seats

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17 Fiat Tipo 1.3 mj Lounge

And several other Italians

#5 User is offline   Sarakina 

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Posted 04 May 2021 - 06:40 PM

View PostNoobyT, on 04 May 2021 - 04:49 PM, said:

Both the air con compressor and the alternator have a Gates coupling.

It's in two parts, one of which is rubber.

Because everything is gear driven at the front of the engine on the R5 and the V10 (which is two R5s) the Gates coupling is used to protect the engine in the event that the compressor or the alternator seize.

The Gates couplings should be regarded as service items and replaced every 100,000 Kms or thereabouts.

https://www.ebay.co....g-/184151935383



This is what the AC guy i rang talked about. Looking at the parts i guess the rubber wears out which is available separately, doubt my luck is that good though. I'll get to my specialist when i can and get the car lifted.
2005 T1 2.5 SE Sport: with a growing number of new bits.

#6 User is offline   Sarakina 

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Posted 04 May 2021 - 06:43 PM

View PostAndrewgrale, on 04 May 2021 - 05:52 PM, said:

Is the fan working?? On ALL speeds, especially speed 1??????

There is a wee resistor built into the resistor that activates the air conditioning system, if you have no speed 1 the air conditioning will not work



Plenty of air circulation. Its automatic climate control so no #1 fan speed as such.
2005 T1 2.5 SE Sport: with a growing number of new bits.

#7 User is offline   NoobyT 

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Posted 04 May 2021 - 06:46 PM

https://m.youtube.co...h?v=SVflk9JRfws

Marius was the R5 guru. Went by the user name e4Pikanini on clubtouareg.

https://m.youtube.co...h?v=410_cK4JlGA
Tip! Search this forum using Google or Bing with [site:www.mytreg.com word word word ]

VW Touareg models are as follows:
Generation 1: T1 is model 7LA and the facelift T2 is model 7L6
Generation 2: T3 is model 7P5 and the facelift T4 is model 7P6
Generation 3: T5 is model CR7

Models, engines, build years, etcetera - all essential reading - is here:
http://en.wikipedia....kswagen_Touareg and here:
https://www.autoevol...swagen/touareg/

The world's most comprehensive guide to buying a used Generation 1 VW Touareg [T1 & T2 2002-10] that could save you money [even more essential reading!] is here:
http://www.mytreg.co...at-to-look-for/


FYI: Porsche Cayenne 955 = T1; 957 = T2; 958.1 = T3; 958.2 = T4; 9YA = T5
Brilliant site with a lot of information and many photos of all the Cayenne models since launch! https://www.stuttcar...ls/cayenne/958/

#8 User is offline   Sarakina 

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Posted 04 May 2021 - 06:53 PM

View PostNoobyT, on 04 May 2021 - 06:46 PM, said:




I'm guessing thats showing it shouldn't rotate as freely? Whats the fix, DIY possible or speciality stuff?

Second video means specialist in my case.
2005 T1 2.5 SE Sport: with a growing number of new bits.

#9 User is offline   hunterlees 

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Posted 05 May 2021 - 07:25 AM

It is possible to do a visual check on the Gates coupling.
I have previously posted on my a/c whereby a faulty ambient air temp sensor was giving negative temp readings so the a/c wouldnt kick in, despite the system being fully gassed etc.
The only real answer is to get a proper vcds scan and look at the live values

And also the guy that regassed your system is a numpty - it doesnt have a clutch.
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#10 User is offline   Sarakina 

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Posted 05 May 2021 - 11:31 AM

View Posthunterlees, on 05 May 2021 - 07:25 AM, said:

It is possible to do a visual check on the Gates coupling.
I have previously posted on my a/c whereby a faulty ambient air temp sensor was giving negative temp readings so the a/c wouldnt kick in, despite the system being fully gassed etc.
The only real answer is to get a proper vcds scan and look at the live values

And also the guy that regassed your system is a numpty - it doesnt have a clutch.


I can see the coupling referred to merrily spinning so thats a relief. Need to get it to my indie when home again, Saturday with luck.

Maybe its the sensor you refer to, do you recall the costs?

ATS re-gassed it, nice guy but far from an AC specialist tbf. ☺
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#11 User is offline   hunterlees 

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Posted 05 May 2021 - 03:07 PM

Really only a VCDS scan will point you in the right direction, but for info the sensor I replaced is located in the passenger side near the pollen filter, and cost about £12.
I don’t recommend just replacing things on a trial and error basis - get a scan.
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In my 14th year of ownership :-)
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2018 BMW 530d M Sport Touring.

#12 User is offline   Sarakina 

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Posted 05 May 2021 - 04:46 PM

View Posthunterlees, on 05 May 2021 - 03:07 PM, said:

Really only a VCDS scan will point you in the right direction, but for info the sensor I replaced is located in the passenger side near the pollen filter, and cost about £12.
I don’t recommend just replacing things on a trial and error basis - get a scan.



I won't speculate, I've managed to book a scan for Saturday.
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#13 User is offline   Sarakina 

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Posted 08 May 2021 - 07:00 PM

Car was scanned this morning and it flagged a "fresh air quality" sensor located under the front scuttle. Happily the indie dealer had one. Fitted it and another scan run to clear the fault only to have yet another sensor flagged. This time the ambient air temp sensor was apparently showing -1° so the AC wouldn't kick in.

Unfortunately this sensor wasn't ex stock, so another visit next week which i hope will sort the problem. £150 down so far and counting.
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#14 User is offline   hunterlees 

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Posted 08 May 2021 - 07:33 PM

Air quality sensor has no effect on the a/c at all !
The ambient air temp sensor is the one i mentioned before.
Easy job to replace yourself and a common item across the VW group.
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#15 User is offline   Sarakina 

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Posted 09 May 2021 - 07:07 AM

View Posthunterlees, on 08 May 2021 - 07:33 PM, said:

Air quality sensor has no effect on the a/c at all !
The ambient air temp sensor is the one i mentioned before.
Easy job to replace yourself and a common item across the VW group.


Well, my advice was to have the car scanned. Having done so my notes as above is the outcome. I recalled your post regarding the ambient air temp sensor, I've been quoted £32 'fitted', more than you suggested. As i have no scanning facilities myself i am dependant on the Indy that does.

It seems they don't know the air quality sensor is not related to the AC issue, so replaced the first identified fault, which is logical. Hopefully the ambient temp sensor will be the fix. As no motor factors had an equivalent it was ordered from VW UK. If it arrives early enough i may get a call to return on Monday.

** The £150 expenditure i mentioned previously will include this second sensor, the external fresh air sensor was £120 fitted. I checked with the nearest main agent who quoted £106+VAT to supply. If it doesent exceed £150 all sorted ill be philosophical. With two scans included it won't be bad VFM.

I do wonder what impact the air quality sensor will have now renewed?
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#16 User is offline   Sarakina 

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Posted 10 May 2021 - 06:47 PM

Got the anticipated call to return to the indie to fit the ambient temp sensor.

Long story short, VAG parts distribution centre sent the wrong one :angry:

Back again, maybe tomoro :unsure:
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#17 User is offline   NoobyT 

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Posted 10 May 2021 - 08:29 PM

"Oh cock!" as Captain Slowcoach would say!
Tip! Search this forum using Google or Bing with [site:www.mytreg.com word word word ]

VW Touareg models are as follows:
Generation 1: T1 is model 7LA and the facelift T2 is model 7L6
Generation 2: T3 is model 7P5 and the facelift T4 is model 7P6
Generation 3: T5 is model CR7

Models, engines, build years, etcetera - all essential reading - is here:
http://en.wikipedia....kswagen_Touareg and here:
https://www.autoevol...swagen/touareg/

The world's most comprehensive guide to buying a used Generation 1 VW Touareg [T1 & T2 2002-10] that could save you money [even more essential reading!] is here:
http://www.mytreg.co...at-to-look-for/


FYI: Porsche Cayenne 955 = T1; 957 = T2; 958.1 = T3; 958.2 = T4; 9YA = T5
Brilliant site with a lot of information and many photos of all the Cayenne models since launch! https://www.stuttcar...ls/cayenne/958/

#18 User is offline   Sarakina 

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Posted 11 May 2021 - 02:36 PM

To bring this matter to closure, should anyone be interested, three workshop visits and two sensors replaced, the cabin now gets cold air.

I did think last year when the car was new to me, it didnt really blow properly cold air. With hindsight i think the sensor/s were duff when i bought the car, numpty me for not checking it even on a cold January day.

Grand total was actually £160 cash, the ambient air temp sensor was rather more than the £12 suggested. £32+VAT from a main dealer, 40 beer tokens sorted that with fitting. I dont think my aging back would have enjoyed the positions the fitter had to get into, so i'm happy with the outcome.

Its now finally ready for its second expedition to Greece, this time with correct import papers!
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#19 User is offline   NoobyT 

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Posted 11 May 2021 - 03:15 PM

Glad you are sorted. Do a post or three with pix on your travels!
Tip! Search this forum using Google or Bing with [site:www.mytreg.com word word word ]

VW Touareg models are as follows:
Generation 1: T1 is model 7LA and the facelift T2 is model 7L6
Generation 2: T3 is model 7P5 and the facelift T4 is model 7P6
Generation 3: T5 is model CR7

Models, engines, build years, etcetera - all essential reading - is here:
http://en.wikipedia....kswagen_Touareg and here:
https://www.autoevol...swagen/touareg/

The world's most comprehensive guide to buying a used Generation 1 VW Touareg [T1 & T2 2002-10] that could save you money [even more essential reading!] is here:
http://www.mytreg.co...at-to-look-for/


FYI: Porsche Cayenne 955 = T1; 957 = T2; 958.1 = T3; 958.2 = T4; 9YA = T5
Brilliant site with a lot of information and many photos of all the Cayenne models since launch! https://www.stuttcar...ls/cayenne/958/

#20 User is offline   Sarakina 

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Posted 11 May 2021 - 03:35 PM

View PostNoobyT, on 11 May 2021 - 03:15 PM, said:

Glad you are sorted. Do a post or three with pix on your travels!



I meant to post more pics last year but nothing really seemed interesting enough.

I'll try harder this time ☺
2005 T1 2.5 SE Sport: with a growing number of new bits.

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