Engine Rattle At Start No Power Check Engine Vsc

[lovlex]

I have a 98 LS 400 with 62,000 miles on it. I was reading in my owner's manual that when you start your car, sometimes you will hear a sound in the engine compartment which means that the anti lock brake system is in the self check mode. Today when I started my car, I heard this rattling noise under the hood so I figured it was the brake system doing its check. After about 20 second of this, I decided to press on the gas pedal to idle the car up to see would that stop the noise. When I pressed the pedal, the engine did not idle up. I put the car in gear and the car did not accelerate in any gear. It was like the gas pedal was dead. I noticed that the engine light, check VSC light, and traction control light (I believe) all came on. I restarted the car 3-4 times and then the noise went away and the gas pedal started working and all the warning lights went out. I know that the VSC controls the brakes and engine to keep the car from skidding. Please help!!!!!!!!!!!!!!!

Thanks,

Adam

[djspawn00]

The VSC lights come on with the Check Engline Light anytime the CEL light is activated.

[MIKEY2TIMES]

YA MY 1990 LS400 DOES THE SAME THING TO ME SOMETIMES I HAVE A MECHANIC THAT WORKS AT A TOYOTA DEALERSHIP I BROUGHT IT IN AND HE SAID THAT THE ELECTRONIC THROTTLE OR SOMETHING LIKE THAT ALOT OF LS400's DO THAT AND THAT THOSE WHERE THE SIGNS AND HE ORDERED THE PART PUT IT IN AND DOES HAPPEN ANYMORE.

[lovlex]

i was also reading this on the forum and was wondering could this be my problem?

"I think folks sometimes forget the many differences that the 98+ LS have over previous models. Your throttle body can and will get dirty but this will not cause the problem you noted. The 98+ LS does not have an EGR system as the earlier ones do, they’re able to reduce emissions through the use of VVT-i. You have an electric motor mounted at the throttle body which controls the throttle, and is most likely what caused your intermittent problem. That still doesn’t justify replacing the complete throttle body, rather the motor assembly only, which runs about $290."