00256 givers for refrigerate pressure

[Booboo]

Is this for low pressure or a duff G395 sensor part No. 4H0959126A ?
If I swap the sensor will I need to regas anyway? Also I can't see an O ring bundled with the sensor for sale.

https://www.audi-sport.net/xf/threads/air-con-sensor-diy.331756/

Edit:- Most is answered here.

 

[rum4mo]

Yup, if searching under that code offers "sensor duff" just do it, but always aim to buy a latest version of that frequently updated sensor it will be worth it long term, ebay ones mainly tend to be just someone selling on "auctioned off lots" of VW Group parts that have been superseded.

With a dry clean finger wipe as much of the AC oil off the old sensor and smear that over the new O-ring to stop it "picking up" while being tightened and tearing.

Edit:- wait a minute, you have not tried hard enough to diagnose this, maybe take that fault code at face value and get the system charge checked before doing anything else.

Another Edit:- or at least have a visual check of that sensor, if its showing signs of oil mist around it, it could be the root cause of the low gas pressure and so needs replaced, mainly due to corrosion building up in the alloy body near the O-ring seal area, clearing that might sort it, but normally I'd expect that the area where the O-ring bears on is now not a smooth face and so will lead to further gas loss, so if that is what you find, ie a slightly oil mess or just a dampness near the sensor, then buy a new one and get the gas charge "corrected".

 

[Booboo]

Cheers buddy I'll take a look.
I did have it regassed last year at a local garage but it didn't have the affect I expected. Blew cool and demisted but I wouldn't say cold

 

[NHN]

No regas needed, common fault on numerous chassis, for the cost of a sensor I'd try it given how often it's a fault.

Sometimes the location can be a pain to get too, just don't twist the pipe if it's tight, lube with wd, then slowly undo.

Hopefully it's this.

 

[Booboo]

Booked in at a local Aircon specialist on Monday. He said they use 100% virgin gas unlike most that use recycled. Will scan the car and go from there.
I'll let ya know how it goes.

 

[NHN]

Did you swap the sensor yet?

 

[Booboo]

No I didn't, as when it does work it's not exactly cold. I figure if the sensor was gone it wouldn't run at all? I just thought I'd let them sort it. Guy at garage said he'd check that and refrigerant pressure and go from there. It's a trustworthy local place so I have confidence (he says!)

 

[Booboo]

Little hole in condenser radiator
He shown me little oil leak in the corner. £300 to supply & fit and regas with virgin gas.

 

[NHN]

That's a very good price tbh given the work required.

 

[Booboo]

Car is all sorted. Took him longer than he expected, bit stuck to his price.
He recommended I change my front to centre section exhaust clamp tube as it's corroded. Easy to get at if I do it,or just take it Kwik fit?

 

[NHN]

Yeah it's not a quick job tbh.

 

[rum4mo]

Why not either buy a pair of replacement clamps same type as VW Group use, or just buy a new joining sleeve from Audi as I'd think that Kwikfit would only fit the usual "TV Aerial" style of clamp.

These clamps are a very well known failure point as they rot through.

Better done on a ramp though, so maybe offer somewhere like Kwikfit the job to fit your supplied parts, or at least the 2 clamps as the joining tube itself will be okay.

I'm assuming here that your AC man has used the correct term and its not a flexi section.

 

[Booboo]

Yeah might just get the clamps replaced

 

[rum4mo]

I bought a pair of aftermarket joining sections via ebay for my old 2000 Passat 4Motion, unfortunately guessed/believed it was the correct one, so measured up and bought another pair, so maybe get under there and measure the pipe before and after that joining strip and order one up, simple but messy way to sort that as good as new is to lever these clamps off, open up the new clamps enough to slip them over the - maybe pipe and then move them along to the correct positions, and then use a pair of pipe wrenches to close them up enough to refit the bolts - maybe I even used a gash bolt(s) to close them up fully initially before removing these gash bolts and fitting the correct supplied bolts.

The wrong sized clamps, or at least 2 of them came in handy to sort out my older daughter's late 2009 Ibiza 1.4 16V 86PS after its exhaust ended up resting on the cross brace due to loosing its clamps due to corrosion!

 

[Booboo]

I've checked on the parts data base
They 65mm clamps and a 90mm tube.
Gonna Dremel old clamps off.
Curiosity of our maintenance dept at work.

 

[Booboo]

Damn that spell check

 

[rum4mo]

I'd think that you'd find that a quick application of a big screwdriver will have the broken one out quickly and will destroy the still, if it is still, intact but corroded one, these Mikolar clamps are way over the top for that job, still better to be "over the top" than cause you grief in a few years time, I'd think that the same type as VW Group use but cheaper versions would see you okay for maybe another 8 years.

Edit:- one thing, in case you have not thought of this, or in my case had to deal, this time with both clamps broken is, the plan should be to have the bolts vertical at one side, the bolt head end downwards - I only had a few minutes to sort out my older daughter's Ibiza and I just fitted the clamps with the bolts pointing downwards as the original type of clamps retain the head of the bolts, ie stop them turning - so the quick and easy way is to fit them with the nut end downwards which leaves a long length of bolt sticking downwards, not clever or a good look - but she traded it so not now my problem!

Most of that was probably irrelevant as Mikolar designed these clamps a bit better!!

Edit:- one other maybe mamby pamby comment is, these new clamps as they arrived, will bot have a hole in them to correctly position them on the joining sleeve, the original design of clamps have a depression on them to accommodate the clamp in the correct position - I'm just altering you to that, that is all.

 

[Booboo]

Sorted One 'clamp' just fell off when I pulled on it