Hi,
I have a problem in my car Scion tC 2006 automatic 60,000 mi. Lost acceleration reaction on pedal gas is very bad I must slowly push pedal gas.
Next symptom when any time I stop idle Rpm bounce down and up to 1200 Rpm once.

I must wait until Rpm he dropped to move again. Computer doesn't see Check Engine, new all filters and oil motor and transmission??

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Use a OBD2 reader and see whats going on. If you don't have one go to Autozone or Oreilly and get the codes checked. I had a Nissan do that and it ended up being the MAF sensor.

 

Perhaps a brake booster leak? its a hose that runs along the firewall to part of the intake.

I used to play with explosives, and now I only have 10 fingers....