Then it started playing up again.....To an extent the issue can be very voltage sensitive. ie short trips in very cold weather. Warmed up and charging off the alternator for a while, the issue moderates then fixes itself again completely after a few miles. That`s even with a fairly new Varta Blue premium battery fitted. Cold starts even with an engine that fires instantly, drops plate and terminal voltage on the battery and the wipers come out in sympathy. Its most frustrating. My used replacement still sits in a box in the garage!
Your air compressor doesn`t seem to have gone well. The bore must be in near perfect condition to tolerate a piston ring replacement. Bagpiping Andy does a replacement pattern cylinder to get around wear in that area. Also note that the silica gel media in the canister can become sopping wet having mopped up loads to condensate water over the years. That can make a compressor dysfunctional. Silica replacement kits can be found on the 4x4 Airseals site and are not expensive. A wet and clogged media canister will stop air from passing to the other suspension airline parts. So if you haven`t done that job, I`d suggest that might be a wise move before going further.
Check the airsprings for leaks also. Do this by going to each corner in turn and lift the car body work by putting your back to each wheel arch then with your hand behind you, try lifting the car. Any air leakage then found is often down to a worn airspring.
If you were to lock the car at 21.00hrs and be there again at 09.00hrs the next day, you would be treated to the spectacle of a twelve hour suspension reshuffle! Its quite amusing to watch the car especially if not parked on a flat surface. Up and down, wait, one or two individual adjustments, lots of expulsion of air from the pump area and finally an adjusted suspension. On that basis then, its not surprising that you found your car seemingly unaltered after a week. By my reckoning, it will have shuffled at least fourteen times over seven days of inactivity!!
There you go.
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