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Hi, I think this reading might give you the idea: http://www.easterncatalytic.com/education/tech-tips/the-misleading-nature-of-the-po42o-code/

Barney, The unfortunatately I got some issues since two day. On cold start car shakes like someone would wobble a car gently. I did some reading and some state that it would engine mount. The problem is that when the temperature rises the symptoms disappear. I have cleaned the air flow sensor today. Tomorrow will check if the symptoms are gone. Looking at the vehicle history looks like spark plugs were changed at 59k. I have ordered new set in case if cleaning sensor would not help. On on the other hand I have noticed that cooling liquid is always on minimum. Should I top up or just wait and replace it with long life when cambelt is done? How many litres goes to the cooling system? Thank you. Chris

Hello Barney, I am back from my holiday. Came back this morning but could not wait and rushed to Lexus Woodford to speak to gentleman at Toyota who works in parts departamen. He kindly, as he did last time for me, printed out all service history of the vehicle. All is up to date, quiet a lot of items were done (9no A4 pages) and it looks like only Cam belt was not done and cannot see rear diff oil exchange. I have asked why the cam belt was not done as on 10yrs or 100k miles, and here I would have to quote you, as this was apparently only advices to the owner. And I assume as you have suggested previous owner didn't want to spend such a sum on exchange. Currently, I am waiting for my mechanic to come back from his holiday to book car in and to proceed with cambelt and water pump along with rear diff oil exchange. To be honest I am happy with a purchase even more looking at the FSH. Kind Regards Chris.

Rayaans, Thank you for your reply. I alteady got one since 6 months and I was about to use it on my GS300 in Black colou bit unfortunately it was vanadlised and written off by insurer. i have purchased recently silver GS430 instead. I will see difference when I apply. On GS300 I have used carnabua wax which was good though. Dont want to apply Fusso before proper wash and clay the car. Thank you. Chris

Thank you. In one of your posts you have recommended Soft99 Fusso wax. Is this correct?

Hi Rayaans, Is it essential to polish after clay? What wax to use on silver car? I have GS430 2006. Thank you.

Barney, Thank you. My GS430 has got full service hostory. Last stamp was 97k but according to Lexus Birmingham CamBelt was not done. I would assume that if the vehicle is close to 100k they are ablige to exchange otherwise no stamp? I will ask politely Toyota parts depo at Woodford and gentleman will dig out all service history as he did before. I will make a list of parts and see what the prices are like. I will post results mid of next week. Kind Regards Chris

Barney, £360 parts (cam belt and tensioners) + £290 laboure. Thats a lot of money and doesnt include water pump. Lexus Woodford are not good I assume. My judgment is base on the experience of my firend which drives 2012 450h. I dont remember what was the issue from the top of my head but Lexus Woodford wanted to strip engine to look for the problem which would cost approx. £4000! The same mechanic checked and fixed including part £350. I might ring Lexus Bristol and ask for a quote though but still I am more towards trusted mechanic which will check all vehicle. That will be sometimes next week I suppose as I am still on my holiday. Thank you again Barney.

BarneyTT Thank you for your reply. Last service was done at 97k but unfortunately last owner didnt exchange cam belt. Currently my car has 108k. I live in London and I got quote from Lexus Woodford: -£360 for Cam Belt Including tensioners -£290 for labourer. I just bought it recently as my GS300 55reg was vandalised and uneconomical to repair. Got money back from insurer in 3 working days since they have made decision. Shame as this was well looked GS! I started to look for GS430 as apparantly engines are very good. The only concerne is if I should change Cambelt along with tensioners, waterpump and maybe radiator, as to prevent any isssues with leaks to gearbox? If I would look to change all those components than it wouldnt be at Lexus. Purchase original parts with Lexus and installation by trusted mechanic. Would you recommend to exhange radiator as well? Kind Regards Chris

Hi, Was it including tensioners? What about water pump? I have recently purchase 2006 GS430 and unfortunately at 97000 miles previous owne wasnt bother to exchange cam belt. Kind Regards Chris

Hi Steve, Hope you are well. How are you doing with the Lexus. Have you done suspension? Regards Chris

Hi Mateusz, Any short video how you exhaust sounds. Thanks.

Hi All, I have set of Goodyear Eagle Asymmetric 3 on my GS300 SE-L and as Rayaans stated, they are good tyres. On the motoway driving 80-90Mph I can get 40-42MPG, Urban 34-30MPG. Those values drops during cold weather: Urban 15-18MPG, Motorway 30-35MPG. Hope this help. Chris