trinituner.com

ok fellas,

i noticed when i stop in traffic, the rpm goes to 1500 then right back to almost 0 causing the car to vibrate, then if i turn off the ac, it will shut down...this never use to happen before.
any idea what causes this?

i feel u have a fuel problem. try to clean u injectors, get new fuel filter, clean or change air filter.

something wrong with the step up?

kl122 : original engine ?

is yes

check the idle air motor

have the same problem at present

its d original engine, D15B 3 stage Vtec, i will check that out, thanks!

Chek the TP sensor nd a proper tune up. Most likely the TP sensor