I noticed the other day that at approx 42MPH the viscous clutch appeared to be locking and unlocking, but as I was on a road with a 60MPH speed limit I thought it was a one-off.
Coming up the M1 on Sunday, through the 40MPH roadworks, it was a real PITA. I either had to keep to a speedo reading of 39MPH or 45MPH. At almost spot on 42MPH it feels like either the O/D or the viscous clutch is switching on and off about every 0.5 of a second. Taking the O/D off seems to stop it happening, so it is not entirely speed related, but driving at the same revs with the O/D off doesn't cause the same symptoms.
I have checked the ATX oil and it seems to be a reasonable red-ish colour.
Any ideas please. It is doing my head in.
Coming up the M1 on Sunday, through the 40MPH roadworks, it was a real PITA. I either had to keep to a speedo reading of 39MPH or 45MPH. At almost spot on 42MPH it feels like either the O/D or the viscous clutch is switching on and off about every 0.5 of a second. Taking the O/D off seems to stop it happening, so it is not entirely speed related, but driving at the same revs with the O/D off doesn't cause the same symptoms.
I have checked the ATX oil and it seems to be a reasonable red-ish colour.
Any ideas please. It is doing my head in.
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