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About monarch

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  • Lexus Model
    LS 400

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  1. Hey Monarch. I'm new to the world of Lexus. 1992 LS400 271K running like a champ. Just wanted to make friends with the Gurus on the site. Thanks

  2. Yes, stay alive so you can come home and fill your Lexus with the oil you defended:IRAQ'S PIPELINE TO CALIFORNIA Iraq has historically been a big supplier of California's crude, accounting for one fifth of all the state's imports in 2002. The spigot was cut when the United States invaded Iraq in March, but it was restored in August. -- Sources of oil in California Foreign imports 30.3% Domestic 69.7%. -- Sources of foreign oil imports Iraq 20.1% Saudia Arabia 19.5% Ecuador 13.7% Mexico 8.4% Angola 8.3% Argentina 7.3% Yemen 3.7% Australia 3.5% Others 15.4% Source: California Energy Commission
  3. Could be way overdue for a new fuel filter, air filter, spark plugs, distributor caps, distributor rotors, spark plug wires and oxygen sensor. Could also need a throttle body cleaning and a change of transmission fluid using Toyota Type T-IV.
  4. You're right - I forgot there is one pre cat sensor per exhaust manifold on the V6.
  5. There is only one oxygen sensor you need to replace - it's the one in front of the catalytic converter. If you go to this website and type in "oxygen sensor" in the space for keyword, you'll see a new front sensor for a Federal emission ES like yours is about $114.00 with free delivery via UPS Ground This genuine Toyota sensor will look and fit perfectly, just like the factory original one and will last just as long. And after front sensor replacement, fuel economy should improve noticably. The rear sensor (behind the catalytic converter) should last many more years
  6. nc211, on your way northwest up to Santa Barbara, on highway 101, you'll see more Lexus's and Infiniti's on the road that you have probably ever seen anywhere else in the USA before, particularly around the ritzi towns of Calabasas, Thousand Oaks, Westlake Village, etc. Or, if you take the coast highway #1 to Santa Barbara, you'll also see Lexus's and maybe Lamborghini's and Ferrari's around the movie star towns of Malibu and Pacific Palisades. In Santa Barbara Lexus's and Porsches are very popular At I think you'll see there are over one dozen Lexus dealers in the Los Angeles
  7. According to Consumer Reports, a near new LS400 filled with conventional oil, factory filters, facotry spark plugs, etc. gets 30 MPG on level ground at a steady 55 MPH. Your particular LS400 probably gets more like 27 MPG at 55 MPH because a number of maintenance items need attention or have been neglected over the years such as the air filter, oxygen sensor, throttle plate, distributor caps and rotors, etc. Expensive K&N filters and synthetic oils not only fail to increase gas mileage (by more than a trivial amount), they also distract car owners from spending time and money on the m
  8. Compressor and magnetic clutch life can be greatly extended by observing a few rules: 1) Run the AC system at least 5 minutes at least once a week throughout the year, not just in summer. 2) If several days have elapsed since the last time you ran the AC system, turn it on only if the car is at idling speed, not while the engine is spinning fast such as on the freeway. Inside the compressor there are pistons and cylinders just the inside of a car engine and compressor oil drains off critical parts after several days of non operation.
  9. No residual pressure = no residual refrigerant was in the system. There were recent threads on recharging the '91 LS400 and they answer the questions you have posed.
  10. Here are the $23.00 Denso universal oxygen sensors the Ebay seller claims will even work on even the 2003 model Lexus's:
  11. The heater should still work in winter even if the air conditioning system is empty of refrigerant. In fact, the air conditioning system (compressor) is designed to stay shut off if the outdoor temperature is below 32 degrees F. The purpose of the engine fan is to PULL cool air from the front of the car through the radiator in order to cool the coolant inside the radiator. The engine fan has nothing to do with the heater.
  12. We discussed this in detail for you two years ago:
  13. Would you want to buy the cheapest spark plug available? Probably not, because you probably realize how important the spark plugs are for top engine performance and fuel economy. Same thing applies to oxygen sensors.
  14. Use of dyes is not recommended by Toyota because Toyota considers dyes to be a system contaminant that could degrade long term system reliability / durability. Toyota has always recommended use of an electronic refrigerant leak detector or (in the old days) a halide torch leak detector. Dealers and most AC shops have an electronic leak detector. An easy way to prevent refrigerant leaks from ever developing is to simply run the AC system for at least 30 seconds and preferably for 5 minutes or more once every week or two throughout the year, including the winter months.
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