Hi, I've been searching for a vaccuum leak since june and I can't find it, I think this is why i have a BOUNCING IDLE between 1,200 and 1,800 RPM. I tried adjusting the TPS without success... Boucing idle stops WHEN...

1. Enable the A/C (2,200 RPM)

OR

2. Get to a red light in neutral then putting the car in any gear (1,500 RPM). If I push the throttle now I can't have a good idle anymore.

So... what do you think? I tried checking for error codes but I have a JDM and the car doesn't have any Check Engine Light.

Sorry for my bad english? Haha...

 

Thanks anyway?

 

You're welcome.

 

I think you can still check for codes. IIRC the procedure is the same (GRN to TEN), but your exhaust temp light blinks?

 

You test it per the FSM:

 

While you are reading the FSM, there will be some troubleshooting tips for the idle. You will also want to check the mechanical settings for the throttle body. If the mechanic settings are misadjusted it will allow improper amounts of air. After you have those mechanic settings adjusted, retest your TPS values as they will change with changes in the mechanical settings of the throttle body.

I don't understand how you would think the boost sensor has anything to do with a surging idle but so it goes

 

there is like 50000 threads on idle problems, i've posted in about 6 in the past few months. here are some pics of the idle adjustments and other things that effect a hunting problem. Also check that your clutch switches are okay, and your dashpot it adjusted/working correctly. But my best advice is to just open up the many many other idle threads on this forum and start reading.