GS - 2nd Gen (1998-2005) Discussion about the second generation GS300, GS400 and GS430 (1998 - 2005)

Check Engine Light Problem

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Old 07-04-05, 10:04 AM
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Prost
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Unhappy Check Engine Light Problem

I was driving to the freeway at the on ramp and just as I start to accelerate, my car stall, all the indicator lights were up and there is no power steering or what so ever. I use the momentum to slowly move my car to the side of the freeway and stop the engine/car. The first time it didn't start. I try it for the second time and the engine start, however, the check engine light is all the way for the duration of my way to home. I notice couple things for this drive. The transmission seems like lost all the "memory" of my driving style and "hang" to gear more often, kind of like after resetting the transmission ECU. Also, there seems like no last of power all, AC, radio are also working fine.

I will bring my car in to the dealer tomorrow morning, luckily, I still have my extended warrantry.

Did anyone experience something like this?

Sorry of my "bad" English
Old 07-04-05, 10:37 AM
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Dx3
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Never had this problem myself - but luckily you have the warranty which should take care of it. If you can find an Autozone go there and have them pull the codes for you so you can see where the problem lies.

Good luck and let us know what you find out,

Jonny
Old 07-04-05, 10:48 AM
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Mr GS400
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Most of your symptons point to the Throttle Position Sensor (TPS). When the sensor can't figure out the throttle position it sends a 'fail safe' signal which shuts down a lot of motor management functions.

Your Lexus service shop will easily determine if the TPS is defective when they read the codes.

Good luck . . . .

Old 07-05-05, 03:57 PM
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Prost
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Came out to be a bad transmission shaft sensor (or something like this), dealer repalce it under extended warrantry for free. However, no Lexus loaner, just a Camry for the day.
Old 07-05-05, 04:33 PM
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Transmission Shaft Sensor? Hmmmm . . . Didn't know there was one.

So if your drive shaft falls off there's a sensor to detect it. Now that's really cool. Better to sense it then have it roll down the highway.

I guess if you didn't sense it 'You'd be shafted' . . . No pun intended.

Old 07-07-05, 08:17 AM
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Pickup the car today and they said they replace the Input Shaft Speed Sensor. Anyone know what is that?
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