My LS400 is not running like a V8 should. For the first few years i've had the car it ran great. I use to fool around and drive fast, and when i hit the gas it picked up speed and roared like a V8 should, now it doesn't pick up the speed nor rev up like it used to. What could be the problem? What do i need to fix?

Asked by John Jun 05, 2014 at 03:29 AM about the 1998 Lexus LS 400 RWD

Question type: Maintenance & Repair

My LS400 is not running like a V8 should. For the first few years i've had the car it ran
great. I use to fool around and drive fast, and when i hit the gas it picked up speed and
roared like a V8 should, now it doesn't pick up the speed as fast nor rev up like it used to.

John answered 10 years ago

Any lights on the dash kit up? How many miles on the car? Change any parts lately? No check engine light. 134590 miles. And a few months ago I changed out the alternator, PS pump and line because I have multiple ps leaks. A week ago I changed out the gasket valve covers. Today I changed the air filter. And about six months ago I had a tune up done. Didn't change the distributor cap or spark plug wires. I'm going to do those soon as well as a throttle body cleaning.

Mark helpful

Your Answer:

My LS400 is not running like a V8 should. For the first few years i've had the car it ran great. I use to fool around and drive fast, and when i hit the gas it picked up speed and roared like a V8 should, now it doesn't pick up the speed nor rev up like it used to. What could be the problem? What do i need to fix? 1 Answer

My LS400 is not running like a V8 should. For the first few years i've had the car it ran great. I use to fool around and drive fast, and when i hit the gas it picked up speed and roared like a V8 s...

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