BobTee

Stwart,

Sorry this is rather coming late. I had a similar problem with my 1999 GS300 and solved the problem by replacing/toggling in a fuse that was making partial contact. This is just a fuse problem. Check your fuse in the driver's compartment and replace any blown fuse or toggle in every fuse to seat in proper.

Goodluck!

My 1999 GS300 I bought about 2yrs ago just began consuming excess gas. I had just changed all the six plugs (original Denso) and carried out some maintenance but discovered a leak at inlet air manifold and car is idling rough and shaking.

Anyone out there with useful tips to stop the excessive gas consumption and smoothen the idling?

Trust u guys to solve this problem.

I had a similar fault on my 1999 GS300. I finally find the solution by stroking the throttle cable that was stuck some how. Open the bonnet and try it out.

Goodluck!

Bobtee.