Nedd

in park, my idle speed is low, car shakes and i can hear "puff puff puff" sound from the exhaust which usually result in an engine misfire CEL. (click on link for my idle speed)
http://http://yfrog.com/6zimag0024xj

when i turn the headlights and ac on, the idle speed increases and the shaking stops. Any idea whats happening? I've change spark plugs and wires but no improvement. How do i increase the idle speed to normal? I believe increasing the idle speed could help since i don't feel the shake when the headlight plus the ac is on(increases idle speed) See link for idle speed with ac and headlight on. I need help!!!

http://img697.imageshack.us/i/imag0026q.jpg/

Nedd

http://yfrog.com/6zimag0024xj

TLin401

Have you ever cleaned the throttle body, throttle body plates, and bore?

TLin401

This thread will help with cleaning the throttle body, bore and plate.

https://acurazine.com/forums/showthr...tle+plate+bore

I had the same issue with the low idle and I followed this thread and it went back to normal.

Nedd

thanks for the link. I'll attempt cleaning tomorrow

Go90go

Adjust your fast idle valve. A lot of times, it loosens itself and it's not surprising for the amount of miles we've all got on our cars.

~Cheers~

Nedd

How do i do that if i may ask?

Thanks

Go90go

On my motor, it's on top of my throttle body, but on the C32, it should be on the back of the intake manifold runners, IIRC.

~Cheers~

Nedd

I bought a bottle of throttle body cleaner and removed the air intake hose. I then sprayed liberally on the plate as well as behind the plate. There wasn't much deposit on the plate. I also adjusted my fast idle which improved the shaking problem. Anyway what is the correct idle speed for the 2.5TL?

TLin401

IIRC it should be between 650-750.

Go90go

I thought it was 650. In any case, the JDM versions had much stricter tolerances for idle speed. The 3.2s without navi were to be set a 650 plus or minus 5, and the navi models were to be set at 620 plus or minus 5. USDM sticker says 650 plus or minus 50!

~Cheers~

Go90go

Never mind, it has to be 640 for non-navi and 620 for navi, while the timing is the same at two different RPMs!



~Cheers~