AmbroseJohn

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AmbroseJohn last won the day on January 7 2018

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About AmbroseJohn

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    Advanced Member

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  • First Name
    John
  • Gender
    Male
  • Lexus Model
    GS450h
  • Year of Lexus
    2008
  • UK/Ireland Location
    Lancashire
  • Interests
    Classic Cars
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  1. Do not mess with this. It's your main high voltage battery cable (not a hose). If you don't know what you're doing, it could kill you.
  2. I detected a slight leak and kept meaning to have a look. Every time I went out I was usually in a hurry and when I got back it was invariably dark. So it leaked until it finally fell off. There was no warning, it went from slight leak to dragging in a few yards.
  3. My 2008 GS450h exhaust broke at the 'Y', a couple of months ago. Luckily I talked to my local garage before splashing out about £500 for a custom stainless. They just welded it back together. It seems that the problem is not the metal rotting away but a fatigue crack, so the metal is still thick enough to repair. Good job too and only £60.
  4. Just buy the biggest AH battery that will fit in the hole. There loads out there cheaper than Lexus.
  5. The engine is actually started by the traction battery. The 12v battery only fires up the computers that control the system. If the 12v battery is flat, you can jump it, just the same as a normal car. If the traction battery is flat, good luck.
  6. I was thinking of a coil over system for my GS. I've got a slight leak on a rear and whilst it passed its last MOT, it's probably just a matter of time. Any ideas would be appreciated.
  7. Techstream CD from ebay, along with an old laptop and you're sorted for all sorts of problem solving.
  8. Correct Even though the starter operates from the traction battery, it won't start without the computer to tell it to.
  9. Regular without doubt. Using Premium in an engine that doesn't require it, is just a waste of money. You're just paying for higher octane required by the higher compression of performance engines, which is not required or recommended by Lexus. Fuel providers will tell you different but it's their job to separate you from your money, don't believe them.
  10. My 2008 GS450h is often left in my garage for weeks on end, winter & summer and has never failed to burst into life.
  11. No because that is introduced into the fuel, so would be directly injected into the cylinders. To solve this without dismantling and cleaning manually, something would have to be injected into the air intake. The intake on a direct injection system only controls air intake + the products of the crankcase vent system. Venting the crankcase to atmosphere would solve the problem but the computer would throw a wobbly because it's constantly monitoring vacuum, which would be absent or at least diminished.
  12. Thanks for the info. Yes, the USA do have a bigger problem than Europe but only because we use fuel with 5% Bioethanol. This is due to change to 10% shortly and the problems for direct only injection will be similar for both continents. Doing away with Bioethanol completely and use the land used to grow it, to reinstate the rain forests (IMHO), would be a better option but maybe that's not a debate we should have here. 🙂
  13. Can anyone confirm that the 2008 Lexus GS 450h uses the 2GR-FSE engine? As my car approaches 100,000 miles, I'm thinking of carbon build up on the intake values, which is a problem with early direct injection engines. I believe the 2GR-FSE engine has dual port injection which helps solve the problem. Knowledge of the situation would offer peace of mind and help make the decision, whether to keep it or move it on.