Jaguar differential units.
Discussion
No PHers, not a request for the correct SI unit to describe the difference between Jaguars and other vehicles (or, even, between different Jaguars), but an attempt to trawl for some advice/knowledge/wit on a small but worrying noise from the diff unit on on my 1998 Daimler Super V8.
Car's done around 105k and there is a peculiar whining noise from the rear of the car (not the mother-in-law - I checked).
Manifests itself at m-way cruise when making small throttle adjustments (the whining noise, not the mother-in-law) - a slight whine for a few seconds and then all is quiet. Slightly different note when accelerating (gently) and decelerating - for some reason this made me think of heterodyning, and then diff unit wear. Am I mad?
Also noted a slight "clunk" from the driveline (somewhere) when changing from D to R in parking manoeuvres.
I suspect this may be the start of something expensive - though to be honest, I suspect buying the car was always going to be "the start of something expensive"
Car's done around 105k and there is a peculiar whining noise from the rear of the car (not the mother-in-law - I checked).
Manifests itself at m-way cruise when making small throttle adjustments (the whining noise, not the mother-in-law) - a slight whine for a few seconds and then all is quiet. Slightly different note when accelerating (gently) and decelerating - for some reason this made me think of heterodyning, and then diff unit wear. Am I mad?
Also noted a slight "clunk" from the driveline (somewhere) when changing from D to R in parking manoeuvres.
I suspect this may be the start of something expensive - though to be honest, I suspect buying the car was always going to be "the start of something expensive"
There may be some wear in the diff allowing the gears to start running at the point they become slightly noisy under some load conditions. If thats the case then it'll probably go on for ever like that without actually failing.
Suck the oil out through the filler hole and refill with a heavier grade oil - Something like Redline or Penrite EP 140 or EP 250 will quiten it down nicely.
Suck the oil out through the filler hole and refill with a heavier grade oil - Something like Redline or Penrite EP 140 or EP 250 will quiten it down nicely.
Gassing Station | Jaguar | Top of Page | What's New | My Stuff