2JayZ

Could be the crash sensor for your air bags. If it is still dangling you should re-attach it.

.......recently, got 27 mpg on 350 mile trip averaging about 75 mph. Another reason I am reluctant to replace the Iridium spark plugs which are claimed to last many times more than platinums. All of the comments have been very useful and I thank all of you including the coasting downhill guy who, at least, gave me a laugh. ap You must have the GPriuS400! :D

I think he was saying the manual that came with his GS400 stated that the GS300 used iridium plugs. One owner's manual was printed to cover both the I6 & V8 GS.

Yeah - 29 with the engine off in neutral coasting downhill. Maybe.

My 1998 GS300 was originally equipped with platinums. Maybe my car is just not cool enough for iridium plugs? When given the choice I trust the car and the physical evidence over the manual every single time.

I use a polishing compound called Autosol that is made in Canada. Works great on clear lenses without a buffing machine - just use a small dab of polish and a cotton cloth or towel.

Iridium plugs are not OE. Your car came from the factory with either Denso or NGK Platinum electrode dual-ground plugs. Many of us (myself included) feel the Platinum plugs are best for cars that were "born" with them.

You may want to try this -- run your tank down to reserve and fill 1/2 way (10 Gallons/ 37.5 Litres) with 89 octane. Drive around a bit and see how the car performs. The 89 is only 2 points from the recommended 91 so you may get away with it. If the car runs crappy you can go back to the gas station and fill up the remaining 10 gallons with 93 or higher octane and your tank's final octane will resolve at 91 or higher.

The stated requirement for the 98 2JZ-GE is 91 octane. If you use 87 you'll definitely get octane ping and lose efficiency. Every once in a while I'll fill up with 93 octane and the car seems to run even better than with the 91 octane. I don't have scientific proof, but my senses tell me there is a definite difference. I also avoid fuel containing ethanol unless there is absolutely no other choice.

Wear on the inside edge of the tires is excess negative camber and is an alignment / suspension / rear semi trailing arm issue. Probably what is causing your seats to shake is the fact you have much less rubber on the inside edge(s) of your tires, so the wheel weights that were originally installed when the tires were last balanced are no longer doing their job.

A proper alignment should include adjustment of the tie rods if needed. Does the car still shake? You should have mentioned to the tech who aligned your front end that the rods were newly replaced and probably needed adjustment. FYI this car should get a full four wheel alignment when you bring it in for service.

You may be fueling up at an unscrupulous gas station that is selling lower than posted octane gasoline. Stay away from them. Also, the GS is not fond of ethyl alchohol (ethanol) in it's fuel supply. Run your tank down to the reserve. Research where you can buy quality fuel without added ethanol and fill up with 91 octane or higher and continue to use only that gasoline.

Don't know about reversing, or what you heard on the subject from Lexus, but problems with erratic acceleration moving in the forward direction usually point to a faulty Throttle Position Sensor. Tons of discussion on this forum about the subject. Use the Search function for more information on how to troubleshoot and correct.

For the front end shaking you have to check the basics: * Tire Condition * Tire Pressure * Wheel Condition (Bent?) * Lug Nuts Properly Torqued * Balance (Weights missing?) * Front End Alignment GS cars are also very sensitive to bad tires. Sometimes it looks like you have good tread when you view the outside edge of the tires but as you look toward the inside edge you may find you are down to the reinforcement belts. Seen this dozens of times. If you find the front end is out of alignment make sure to get all four (4) wheels done as this is a car that requires both front and rear end alignment. Quick way to see if a front wheel is bent is to swap front right with rear right and front left with rear left then go for a test drive to see if shaking persists.

How many miles on your chassis? When an alignment tech cannot get the rear wheels set up it means one of two things. Either (1) he is a monkey working in a $29.95 alignment shop and doesn't know how to work on your car, or (2) parts in the rear suspension are worn beyond alignment limits and need replacing.

Aren't gold emblems kinda '90s?

Aren't gold emblems kinda '90s?

Thanks for the chuckle! Best one I've had on this forum so far!

Absolutely, positively not - safety issue.

I watched the MythBusters video. Idling in the garage and operating out on the road are two different things. Needless to say, the running a "normal car" on hydrogen must have some serious problems, other than the backfiring :o , or someone somewhere in the world would be doing that instead of using a fuel cell to make electricity to run electric motors to run the car. No reason for all the extra steps if hydrogen worked well in an internal combustion engine.

Natural gas is a petroleum derived fuel (LP = liquid petroleum), so it can be made to work in internal combustion engines with just a few simple modifications to the fuel delivery system. Hydrogen gas has nothing to do with petroleum, so utilizing it alone in a "normal car" is not a real possibility.

There are some empty fuse locations because of the different electrical equipment specifications for US, Canada and European models.

As I understand it, fuel cells actually use hydrogen to make electricity which then powers the car via electric motors. Pure water is the only by-product exiting the tailpipe. The question now is how to manufacture hydrogen cheaply enough and in the quantity required. There are researchers in Denmark (or Sweden, maybe) that have developed a "hydrogen manufacturing station" that uses water from a nearby natural spring and a large bank of overhead solar panels to make new hydrogen for experimental cars that run along one the major highways in their country.

- Bump :D - Only a Mod can create a new pinned thread, I think.

You definitely can run your car on Hydrogen but you need a fuel cell to do it, don't you?