964 C4 light refurb
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Joined: May 2001
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From: Auckland, New Zealand.
Thread Starter
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From: Auckland, New Zealand.
All of the carpet is out, surfaces brushed down and ready for the new carpet when it arrives (delayed due to a back order of 4KV Navy Blue Sliverknit). The soundproofing is dry and in great condition. This should be a quick and quality install. It’s not my first rodeo.
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From: Auckland, New Zealand.
The rubber shift boot unexpectedly needs replacing, as it’'s split. Others may skip these things as it's hidden by the leather boot but I can’t. Part number 993 424 139 00
Last edited by John McM; Mar 11, 2018 at 06:30 AM.
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You read a lot about electrical gremlins due to poor ground connections. I wasn’t having issues but thought it was worth cleaning my battery ground while I was in there. A small Dremel with a wire wheel attachment sorted it.
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The mobile air con tech visited this morning. He injected R134a into the system, pressurised the high pressure circuit to 200psi and took his leak detectors all over the system looking for tell tale signs of R134a leakage. It sounded like an ICU.
Unfortunately, the pressure dropped to 175psi with no leakage detected. He even said the evaporator looks in good condition based on sight.
Rather than do my usual ‘bull in a china shop’ routine I’ve accepted his advice to replace the TX valve and receiver dryer, recharge the system with dye added, refit the fuel tank then run the system through a few cycles until we can detect where it’s leaking.
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The air con technician dropped off some parts for me to fit. He even gave me o rings and some PAG oil to coat them. The evaporator will go in my spares box. I’ve taken a note of the receiver dryer and TX valve parts for my Australasian friends. Btw the TX valve also fits a John Deere tractor!
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From: Auckland, New Zealand.
I replaced the thermal expansion valve (TX) valve. One of the pipes had corrosion on the mounting face so a light sanding was needed there. The O rings were soaked in PAG oil inserted on the pipes then firmly inserted and fasteners tightened.
