(continuation)
Then spray liberal amount of TB cleaner on the butterfly to loosen all the gunk. Place the big rock on your gas pedal or have your assistant press on the gas pedal to open the butterfly. Spray TB cleaner all over and wipe off all the dirt. Yung gold na "screen" I just sprayed TB cleaner until it's clean, I did not wipe it baka mabali or what. Be cautious on working with the butterfly, use minimal pressure on it as much as possible, you don't want to break it or say bye bye to your Throttle Body.
Photo during the cleaning
Wipe off as much dirt as you can using the toothbrush. Marami pang dumi sa pinakaloob pero I just sprayed a lot of TB cleaner on those and didn't bother to reach it kasi ang layo na at di na kaya ng toothbrush, baka may masira pa ako.
After cleaning
Return all that you've removed and make sure the air tube is fitted properly and secured by the clamps, tighten the screws properly. Then remove the negative terminal of the battery for at least 15 minutes to reset the ECU. The one who taught this to me did not reset his ECU at first so he got a Check Engine Light (CEL). After resetting the ECU, the CEL is gone.
You can also clean your MAF sensor while you're at it but I don't have the pics for that since I already cleaned mine a few months ago. Basically you just remove the MAF sensor and spray CRC Mass Airflow Sensor Cleaner if you can find one or an Electronic Contact Cleaner (Quick Dry and with NO LUBRICANT. Don't use WD40 or any other chemical) on the sensor. It's 2 thin wires medyo tago sya and be careful not to wipe or touch it or else you'll break it. Let it dry naturally then put it back. Also reset the ECU after doing this.
The MAF sensor is this one. Pretty easy to remove. Just a pair of screws and a connector attached to it.
View from inside the tube.
This is a short video I took when I tried to start the car after cleaning the TB and resetting the ECU. First try, hindi nagstart. 2nd try tinapak tapakan ko yung gas pedal so nagstart na. Nanginginig at first so hinayaan ko muna then moments later I revved it, nawala na yung nginig. Medyo mataas lang ang idle at first pero it will return to normal soon enough.
Vios startup after cleaning Throttle Body - YouTube
Test drove the car after a few hours of cleaning the TB and damn the throttle response was definitely better. Medyo tumigas yung feeling ng gas pedal pero kaunting tapak lang aarangkada agad. Have yet to measure the FC pero I'm sure it will improve. Napansin ko rin na hindi na nanginginig when going to a full stop as well as on idle. Dati kasi bumababa yung idle rpm to 500 paminsan minsan and nanginginig yung makina, ramdam na ramdam sa cabin.
So there you go. Enjoy the improved fuel economy and throttle response! Any questions or clarifications, fire away!