Fair play for having a go, make sure you keep us updated
I should have mentioned I did that as soon as it was up to operating temperature. All seems good. I'll report back once I've done the gearbox service and looked over the ACMGlad to see your up and running again. I think a clutch relearn is in order if it's been slipping, that's if it does'nt do it when you put the map on.
Congrats - glad to hear you've managed to sort the problem.I've got a video of the solenoid and how it sounds when it's free. I'm not sure how to post it other than adding a Youtube link!
This picture is more just for reference. It essentially shows that this is a manual gearbox with automation. The ACM module selects the gear by moving the pistons which in turn engage the forks that they mate to. If it didn't have the ACM module, you would have had a gear lever in the car, and a clutch pedal (hope that helps explain the role of the ACM module).
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I removed the old paper secondary filter which is also up in the box and replaced it with a stainless one. Some say you should keep the paper one which filters a finer level of particulate than the metal one. I tend to agree but I think there's a balance between starvation caused by excellent filtration, and good oil flow with decent filtration.
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I cleaned the sump and the magnet thoroughly, there was some sludge on the magnet but nothing extraordinary I don't think? Although this is the first GR6 box I've worked on:
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I dont have more pictures as it was getting late! But I then replaced the large square filter with a new one and put it all back together.
Findings and conclusion so far:
When I dropped the transmission oil, it absolutely reaked of burnt clutch.. like a learner driver has been riding the clutch in traffic up a hill on a hot day kind of smell. The oil was also black and very goopy/thick. I suspect this was very much overdue a transmission service.
After putting it all back together, refilling with oil and following the heat up, changing of gears cycles and adjusting the oil level, I can tell it feels different in selecting gear. It didn't seem to 'clunk' into gear and didn't seem to shudder/judder at low speed movement.
That said, I haven't driven it yet (as I said, it was late and I live in the countryside so it's too dark to break down LOL). I'll be doing the rear diff service today, then taking it for a drive. Do a clutch relearn then drive again. let's see how it goes.
Look out for an update!