kulat

check your engine mounts they may be loose. depending how loose they are they may rattle during torque at certain speeds.

yes it is located right before the catalytic converter if you know how that looks like. from the exaust manifold. about the dashboard area. the other end of it has a snap on plug for the electrical.

if you know the seller maybe you can have him buy it for you if he is the original owner or maybe reprogram it. Otherwise, its going to cost you in the neighborhood of $350 or $270 for the valet key.

both oxygen sensors will eventually wear out from heat. Since the book does not specify which side sensor is worn out. I assume both send the same signal to the computer in the same circuit. You can try one first and reset the code. but to save you the trouble of lifting your car twice why not replace them both. Its underneath the car and they look like spark plugs. change them both so you wont be bothered by it for a long time.

I experienced the same thing on my 92 LS400. It appears that the engine is underpowered or should be in a lower gear to give you torque. Well, this maybe because u have bad fuel mixture to give you the right torquewhich will take you to a bad oxyen sensor which can tell the computer to send incorrect amount of fuel in the cylinders. Did your check engine lamp ever come on and stay on? If not well, its about to come on sometime. My oxygen sensrs are replaced and I dont feel that vibration anymore.

Muragrove. I had finally decided to bring my LS400 to the dealer. The service manual book was good and my findings was right all along. My oxygen sensors were bad as indicated by a code 25 for lean fuel ratio mixture. code 26 is for rich fuel mix. cost me about $75 for each sensors. I had two replaced. They are located right before your catalitic converters. You can do it in 15 mins. Just for the sensors for them to do it will cost around $375 for the labor. If you're still wondering how to read the code. Well, get a piece of wire and short pins Te1 & E1 in your TDCL port, turn the key on and start counting the blinks on the check engine lamp. as explained in the batauto.com. OR you could just bring it in for $85 diagnostic. they will tell you whats wrong and just fix it yourself.

this the factory issue Service Manual LS400 book vol. I . Its the damage to my pocket I'm scare about thats why I'm here on this forum. You know there's sharks out there. Ill give you details and pages tomorro

Muragrove, I going thru that problem right now. I have the books, I have done reading the code I have done some of the procedures and still hit the wall. This Car is heavilly riddled with sensors. I just could not spend a lot of time working on it and decided to sched a dealer appointment. After seeing the prices on this thread. I will try again. How to read the code is to short TE1 and E1 on the terminal diagnostic port on driver side-left bottom or under hood top of engine, plastic cap labeled diagnostic towards the left front. flip the cap and short terminals with a piece of wire. Turn on ignition key and count how many times light blinks. Mine read two blinks a pause then 5 blinks. Code led me to book on Section TR8 - code then takes you to another page TR?? forget. Reset Check engine light by removing fuse under hood about left in front of coolant reservoir. remove plastic cover and remove fuse EFI about 2-10 sec. plug back in and pray light doesnt come back on. My prob. led me to check speed sensors on left bank and right bank known also as No. 1 cyl sensor and No.2 cyl sensor respectively or wiggle all connectors to sensor. Lots of plastic covers and bolts. Finally, I gave up the guess work. Next is also the fuel mixture sensor or O2. Hoping my dealer would fix this in no time. Your post scares me. Later