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The importance of cleaning your throttle body

  • robert.lesaca
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25 Oct 2019 13:24 #34536 by robert.lesaca
The importance of cleaning your throttle body was created by robert.lesaca
I own a 2002 Lexus GS300 and I just love this car as it runs well, all electronic components working fine...or so I thought. One morning, the battery went dead. Recharged it and charge was restored after a few hours. Run the engine but the engine RPM just was sitting at idle; only when you depress the acc pedal to the floor would RPM rev up. DTCs indicated the following code : PO120/P1126/P1128. Did all test including scope and resistance and all TPS, APPS and throttle motor control was good. The following day I decided to do some basics - remove inrake resonator and started cleaning the throttle body. After a few minutes, the engine was back to normal !!!

A simple THROTTLE BODY CLEANING every so often comes a long way.!!!

My thingking of why the battery went dead is this : the throttle plates must have been slightly open, locking the clutch inside the throttle control motor that was trying to adjust the plates continously. This was evident of a "faint" whirring sound in the throttle motor assembly when I was inspecting the engine area.

For what its worth...

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27 Oct 2019 08:55 #34581 by Andy.MacFadyen
Replied by Andy.MacFadyen on topic The importance of cleaning your throttle body
Electronics and flat batteries don't play well together. The question is cause and effect or effect and cause, I would want to be 100% sure it wasn't a battery with a dead cell or parrasitic drain.

" Welcome to the 21st"


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