Jase

Thanks so much for the photo. It gives me a much better idea of what it is. Will give the breakers a call if I can't find one throughout the yards in HK. Many thanks mate Jason

Chips and Ahhh Aristo, thanks so much for the insightful info guys. Really appreciate it. Yeh, the car starts and idles fine, but theres no throttle response. How much do you guys reckon a new Throttle Position Sensor costs? and is that a different part to the electronic throttle? The mechanic is some local chinese guy and he doesn't know the exact term like you gurus do. And I'm no better either!!! btw, I reconfirmed the error codes with the guy and apparently I'm told they are correct!? About the 02 sensor, I'm told there are four of them (is that correct?) and I do notice the slightly bad fuel consumption so it might be a problem as well!! Sorry to bombard you guys with further questions

I have a '97 GS300 Series I with mileage about 48,000km. There is no throttle response and the check engine light (CEL) came on along with the VSC on and off light. The engine seems to idle perfectly (with adequate engine oil) and starting is not a problem. I checked whether it was the link between the pedal and the throttle actuator cable but it is perfectly normal. I manually press on the butterfly whilst the engine is idling and there is no rev and response. The mechanic said the following error code is present: P0141 - O2 or exhaust sensor? P1120 & P1121 - Electronic throttle problem? 1) Is there an alternative from having a replacement as I'm told it'll cost about 1,000 pounds. 2) Does cleaning the Mass Air Flow (MAF) sensor help the problem? 3) What is the O2 or exhaust sensor and what function does it do? Is it costly to get it replaced? I desperately need help and is there a most cost effective solution to solve the problem as I'll be selling the car. Many thanks Jason

I have had the same problem on my IS200 (nearside rear). Not really a problem, just a nuisance as I can only hear it with the windows down at slow speeds. The Lexus mechanic tells me he can fix it with a spring set as fitted to the later models (mine is on an X plate) to hold the pad off the disk. Not bothered to have it done yet. Tango, thanks for the advice. You mean the squeaking is caused by the pad sticking to the disk? I also heard adding grease to the spring washers that holds the pads may work. Any ideas?

Hi all, I also have the same brake squeaking problem on the front right caliper on my '98 GS300. The strange thing is that it will only squeak at slow speeds when I brake at 5 - 10km/hr to a complete stop (ie. nudging forward in congested traffic). I previously thought it was the pad wear indicator telling me its time to change the pad so I had all the pads changed (factory standard) on all four wheels but the problem persisted. The mechanic (non Lexus) told me its because of the new pads wearing in and should drive it for a week and see what happens. I was a little skeptical as the other 3 wheels didn't have a problem and as it turned out I have clocked more than 300kms since the pad change and the problem still exists. I have done plenty of reading on the internet and unfortunately, I don't possess the mechanical skills to undo the calipers, inspect the pistons, disc for warping, hydraulic lines etc etc and I am aware that there are many factors causing the brakes to squeak from blocked vents to grooves in the ventilated disc. However, I do notice the brakes tend to squeak louder in heated weather. I have made a visual inspection but cannot spot anything of peculiarity (ie no grooves on the disc) and yesterday I jacked the car up and try to spin the front wheels freely and I find the left one (the problem one) producing a louder 'scraping' noise than the right wheel when the wheels are rotating freely. (Should they even be scraping to begin with?) I wonder whether the brakes can be adjusted to 'toe in' like you would with brake pads in a bicycle but I doubt its a 'wearing true' problem as the brake don't squeak when I brake at normal driving speeds. I desperately need help before going back to the mechanic who already doesn't inspire my confidence. I could well take it to a brake specialist or the Lexus maintanance but I would love to learn a few things from you guys, and great choice to those driving the same car as I find the car to be excellent all around, especially the cornering and the grunt of the straight 6! Happy motoring Jase