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SC300

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Question
Fix vacuum leak and reset idle.
The idle should not be adjusted unless it has been tampered with. The idle is controlled by the idle air control valve. The vacuum leak once identified and fixed should correct any idle problems you have.
Question
Not shifting into overdrive
This transmission is electronically shifted. Possible causes of no overdrive include a faulty transmission range switch, valve body, faulty overdrive brake, or faulty ECM. Faults codes should be read out with a scanner, and statuses read. You may want to...
Question
Cannot shift into overdrive
On the SC300, when the shifter is in the 3-D position if the shifter is to the right, then the over shift function is enabled. Once the engine reaches a combination of speed and load the transmission will automatically shift...
Question
Power windows malfunctioning
In the junction box there is a main power relay that supplies power to the power window switch and motors. This relay gets its work side power from a 30A fuse. These items need to be checked. If power is...
Question
Brake system issues
It sounds like you may have a brake caliper sticking which could be dangerous. The pads should be close to the rotors when the brakes are disengaged, but not making enough contact to squeal or drag. You should have this...
Question
Car won't start after gas is filled up
Fuel pressure needs to be checked on your 1996 Lexus SC300. The fuel pump is cooled by the fuel, so running out of fuel can cause the fuel pump to heat up and can become less effective or non-operational. This...
Question
The car won't start, battery and starter replaced
Thanks for writing in about your 1997 Lexus SC300. Power at the starter needs to be checked along with all of the connections. When checking connections to the starter, the battery will need to be disconnected to prevent a dangerous...

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