kevin28269

Hey
I have a 2002 Sc430 with 70K
I noticed sometimes my car will lose power due to some reason I dont know. It feel like the car is pushing back, I can feel it in my gas pebal try acc but no power have to do it hard, but it will be gone for 1 minute or so. What do you guys think is wrong with is car. thank for reading

Pearlpower

iTrader: (2)

Could be 3 things on the limited info I have.
In order of likelihood

1) Throttle Position Sensor-loses power every once in a while. Progressively gets worse over time. While accelerating at a normal rate all power is gone for a split second would be the normal diagnosis

2) Pedal sensor-by the gas pedal-same thing

3) MAF sensor on the air intake box.

Do yo have any codes?

A problem with 1 will normally not give a code unless really bad.

kevin28269

Yeah but it said something like heater circuit sensor.
I notice on my daily driving es300, that same code discription, both car sometimes it lose power for a minute until you let go of the gas pedal.
Where do you think this throttle position sensor is. I notice my intake box have a hole in it, i try sealing but no change.

kevin28269

Is it hard to replace the Throttle Position Sensor, that you were talking about. I heard you can sdjust the senor to your own and made the engine more agreesive, thanks