Car Air Intake and battery Shaking during idle (high stft)

[Heytherewussup]

Hi,

I’m still searching on my problem for my stft. Goes up to 30-40 During idle. Sometimes car vibrate during idle and the stft goes up. But if I on my aircon to level 3, the stft goes down.Need help and advice! Car so sluggish and high fuel consumption. Thanks in advance

 

[obi_waynne]

Check the air flow meter, o2 sensors and the cat. Have you done lots of short journeys? Do you use a good quality fuel?

Have you tried a fuel injector cleaner like the BG range?

 

[Heytherewussup]

Yes, I been doing a lot of short journeys and a good quality petrol. I been using liqui molly injector cleaner following their recommendation usage every 2,000km - 3,000km. I did a smoke test if there’s leak but the only smoking coming out Is from the EGR valve the black hole area as couple months back I had P0171. So far I have change fuel pump and filter, clean my MAF, EGR Valve and throttle body. Replaced my air box intake rubber seal. Changed a new battery on January.