Question about 1999 Lexus Gs 300
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Posted on Jan 02, 2017
take it to autozone and have the light scanned. Id almost be willing to bet its an o2 sensor, the bank 1 sensors tend to go bad around that time.
Posted on Nov 14, 2009
I have a a 99 gs 300, check engine light is on as well as the vsc light. What is that and needs to be to done to fix it.
Posted on Nov 02, 2010
It is your Throttle Position Sensor (TPS), the black component on the side of your Throttle Body normally on the right side as you look from the front of your engine.
Take the **** of a screw driver and tap the TPS, while the car is on, you might notice a fluctuation. tapping again may not yield a response but it is prone to jolts.
Before replacing it, try to check the resistance with a Digital Volt Meter on the terminals. You can check Haynes Book at a local supply store that might have it or go to a book store that carry the books. Each series of Lexus/Toyota have there own value. If the values are off, loosen the mounting screws and turn the TPS clock wise until you get the values needed. A slight movement is all that is needed or tolerated so take care not to over adjust or the fix will not work.
If you want to just replace it then not where it is positioned and place the new one starting at a counter clock wise postion then place the new TPS and rotate to exact position the old one was and then tighten down. Caution it is best to check the resistance values to insure proper adjustment.
Hope this helps
Posted on Jan 26, 2011
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