spostgate

It is definitely the water pump. I have had exactly the same problem on a (engage shame mode) Triumph TR7. It was actually the jack shaft wearing out the drive to the pump. To answer your earlier question: YES the water pump is the only thing driving the water around your engine (apart from a little thermal circulation i.e. hot water rising through the system). I wouldn't reccomend driving the car until this problem is sorted out as you will cook the engine.

could be an airlock i've had pretty much that effect in another car but must admit it did overheat too. I have found with the waterpumps i have had go on me they leak before they stop working altogether and have you seen about filling the radiator up with the correct fluid as you shouldn't use just a water antifreeze mix there is a specific toyota fluid and constantly dropping and refilling that could get expensive ←

Does anyone know where I can get polyurethane bushes for the steering rack on my Mk.2 GS300 1999. If not does anyone know exact dimensions so that I can get some made?

If I rock the steering wheel from left to right on My GS300 with 42k miles, I notice that the rack moves on it's mount. It is attached to the chassis via bolts, surrounded by rubber around a metal tube. Is it normal for the rack to move prior to moving the wheels. I believe that the design is to absorb vibration but I think the movement is excessive. Any ideas?

Thanks for all the tips. I'll try getting the alignment done asap. One thing I have found though:- if I get someone to wobble the steering wheel from side to side, the whole steering rack moves on it's mount due to the rubber surrounding the 2 bolts that hold the rack and pinion housing to the chassis. Is this worn rubber surrounding the bolts or is this normal?

My recently purchased Lexus GS300 Mk2 with 40k miles has what can only be described as twitchy steering. I've had the discs replaced on the front and all wheels balanced and the tracking checked but still it twitches. It seems to require a lot more input than I have ever experienced on any other car just to stay in a straight line. The input required isn't excessive it's just a bit irritating. I notice it more around 60-70 mph. Is there anyone who has had this problem and found a solution. Could it be ball joints?