if it idles rough too, check your plugs, if not, check your fuel filter.
Yes, and you would probably have a check engine light on also.
If the car is have issues accelerating it may be running to lean. Ensure the engine is using the proper air to fuel mixture so the car will not run lean.
Looking at the engine while standing at the front of the vehicle. The #1 cylinder is the back left corner.
carb problems, adjust the idle screw and see if that helps
under the power steering pump, left hand lower side off engine, while under the hood facing the engine.
The Lexus ES300 and LS400 have different engine configurations and specifications, which means their parts are generally not compatible. The ES300 typically features a V6 engine, while the LS400 is equipped with a V8 engine. As a result, components such as the engine block, cylinder heads, and many other parts are specific to each model. Always consult with a professional or refer to specific part numbers for compatibility.
Because the RX400h is a hybrid, it regenerates its batteries when slowing down. While doing that, the engine brake is disabled to maximize the regeneration. While going downhill for a long time, you can enable the engine brake by putting it in the B gear.
Start the Rx. While engine is running have a friend put it in drive while foot on break. Check trans fluid level on dip stick.
In the 1992 Lexus SC 400, the Engine Control Unit (ECU) is located under the dashboard on the driver's side. Specifically, it can be found behind the kick panel, which may require removal for access. This placement helps protect the ECU from environmental factors while still allowing it to efficiently manage engine functions.
It's best to do because you have to have the front and top of the engine apart so might as well do it while it's apart.
The "check engine" light should be illuminated. Start with investigating the code(s). They may lead you to the cause.
Lexus offers two convertible models, the Lexus SC and the Lexus IS C. You can find complete details and information on both models on the Lexus Website. The Lexus IS C starts at just under $40,000, while the SC MSRP is closer to $70,000. The following link will take you to the Lexus convertible page: http://www.lexus.com/models/allModels/#