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964 C4 light refurb

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Old 03-10-2018, 01:45 PM
  #1036  
CBA
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Project looks fun. Curious what or why did you build the wood platform for?
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Old 03-10-2018, 02:02 PM
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Originally Posted by CBA View Post
Project looks fun. Curious what or why did you build the wood platform for?
Those are ramps to allow me to use a floor mounted scissor lift
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Old 03-10-2018, 02:41 PM
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10-4. Learn something new everyday.
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Old 03-10-2018, 03:29 PM
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An earlier view
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Old 03-11-2018, 04:43 AM
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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. Itís not my first rodeo.
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Old 03-11-2018, 04:46 AM
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The rubber shift boot unexpectedly needs replacing, as ití's split. Others may skip these things as it's hidden by the leather boot but I canít. Part number 993 424 139 00

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Old 03-11-2018, 10:58 PM
  #1042  
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You read a lot about electrical gremlins due to poor ground connections. I wasnít 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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Old 03-11-2018, 11:05 PM
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I did exactly the same on all the car's grounds. Great minds...
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Old 03-12-2018, 06:49 PM
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Originally Posted by Super90 View Post
I did exactly the same on all the car's grounds. Great minds...
Wait until you get to the air con
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Old 03-12-2018, 06:58 PM
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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 Ďbull in a china shopí routine Iíve 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 itís leaking.
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Old 03-12-2018, 07:01 PM
  #1046  
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Leak testing. He used two testers as they are very sensitive and doesn’t want false positives.
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Old 03-13-2018, 03:35 AM
  #1047  
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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. Iíve 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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Old 03-14-2018, 12:16 AM
  #1048  
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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.
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Old 03-14-2018, 12:30 AM
  #1049  
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Receiver dryer has been replaced.

Last edited by John McM; 03-14-2018 at 12:54 AM.
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Old 03-19-2018, 06:37 AM
  #1050  
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Testing servos. Apply 12v to pins 4&5. Reverse polarity to make the servo go the opposite direction.
All five are working. Now to reinstall the fuel tank.
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