I just wanted to see if anyone else's hybrid motor or motor is idling at like 1500 rpm. I ask this because my old b20vtec had idling issues as well. the there is some headwork done on the lsvtec. i'm just not very comfortable having a motor idle that high, does neone know where to start to solve this problem? or is this normal?

 

Tune it. Crome is free and the Hondata S100 is $195.

 

One of the things that cause high idle are vacuum leaks.

Check for proper seal at the following locations.

- IM gasket
- TB gasket
- Anthing that bolts or connects to a hole on the IM such as vacuum lines, IAC etc.
- where the injector goes into the IM

Check proper operation of
- IAC (solenoid operated valve on the back of the IM plenum near the TB. Also check you have the correct plug. Many people of connect the plug for purge valve to the IAC).
- check that the fast thermal idle valve (FTIV) is not stuck open. You can check this by putting your finger over the hole that feeds this valve air when the engine is fully warmed up. There are two holes to the left and in front of the throttle plate. The lower hole is the air feed for the FTIV and the upper hole is the air feead for the IAC).
- also check that the throttle plate is fully closed. Should be "almost shut". Very little air needs to pass the throttle plate to idle at 800 rpms for stock cams.
- proper operation of PCV valve.

 

okay i'll try that, btw when i turn on ac it idles normal at 1k, does that have nething to do with nething?

 

Anytime you put more load on the motor like turning on the A/C your rpm will lower. That's why Honda engines have a idle air control (IAC) valve. When you turn on the A/C it puts a load on the motor and the ECU tells the IAC to let more air in to get the rpm back up. On newer cars with drive-by-wire the extra air is controlled by the drive-by-wire throttle plate. This in a sense counts down on the number of components necessary to control idle speeds.