Hi all,
ok a few more details about the g/box, the problem is that the 1st and 2nd gear syncro rings and hubs wear in one spot which causes the occasional difficult gear selection, the new g/box has re-designed casings and internals so its a gearbox replacement, not just a strip.
The symptoms are:
1. Difficult selection of 1st and 2nd (but sometimes other gears)
2.2nd gear crunches when engaging(3rd also known to do this)
3.The shifter goes into the "gate" but then great resistance is felt before the gear engages.
4.If you double de - clutch the gear change is
normally OK.
5. The problem is intermittent, it does not depend on the operating temp, driving conditions etc ( mine would be fine for 2 -3 weeks then be bad 5 mins later)
6. 1st gear is impossible to engage if you are going more than walking pace ie changing from 2nd to1st.
The official line from lexus to the dealers used to be do not do anything unless the customer complains strongly, ( My sugesstion is to contact lexus head office first before the dealer) I have also noticed that when people mention the problem to dealers, they are saying
" They are all like that" this is just an excuse to avoid changing the gearbox!!!!
I am not sure up to what chassis number this problem effects, but i was told that mine was about the middle of the grouping with a known potential problem and mine was a V reg - I know that doesnt mean much, but it does mean that there are a lot of cars out there with bad g/boxes.
Remember complain like hell and get your g/box changed.
With regard to the water pump, it leaks around the small metal pipe on top of the pump, you will see if it is leaking as the coolant is red and stains the pump housing, if you are not sure its leaking, after running the car for a while use a bit of paper towel and dab around the pipe/pump junction.
I dont know the policy about changing/repairing the pump, all i can say is that i said mine was leaking( its faulty sealing rings) and they changed it, I am assuming that a groove forms in the casting thus allowing the fluid to seep past.