MickDef02

After reading your replies and scratching my head for a few hrs I took her for a drive into town (Darwin) in the hottest part of the day. A few k's down the road I turned on the A/C and after a minute or so at constant speed (80kp/h) I heard the Viscous kick in, so I drove round for a while letting the engine temp get up to max operating. Then on the way home I turned off the A/C and the Viscous disengaged after about another 2 minutes or so. It has only started doing this for about 6 months or so with a fan change in that time so the only thing I can think of is a re-gas of the A/C as it's radiator is creating enough excess heat to engage the coil on my fan. I know a few blokes over hear who cut a free flowing exhaust panel behind the passenger front wheel to help with air flow but I'd rather not have to bust out the grinder just yet.

I've had a backlash in my rear end (Salisbury Diff) for a while now, as well as a solid whine above 60kp/h. Took it to a local mech who reakons I need a new crown and pinion which he was going to charge handsomely for. I came home and knocked the back plate off the diff to have a look and both the crown and pinion look in top nick. There is no free play between them. However, with the gears in neutral and hand brake off, the rear driveline has significant play from the transfer all the way down to the diff. I'm under the assumption that the free play is a result of wear in the rear axle rather than the diff itself. I've heard that the Salisbury's are close to bulletproof. Would this be a fair place to start?

G'day, I'm having trouble with a Viscous fan on my '02 Defender. My fan is newish and operates as it should, until I use my A/C. About a minute or so after I turn on the A/C my fan will engage and remain so, even down the highway at 100k, which loads my engine and destroys fuel economy. But if I turn the A/C off the fan disengages after about 2 or 3 minutes. The condenser fan works as it should and I've flushed the main radiator and refilled her with proper coolant. I've also taken the intercooler off and given her a good clean. There are definitely no obstructions to air flow and the engine has never remotely overheated. Im at a complete loss. Driving the outback with no A/C is a bit of a pain. Any help or advice would be tops. Ta.