my itr had recently converted to b20/vtec. everything's fine except for engine check light. my mechanic checked the error code, it suggests few errors,
1. barometer error
2. idle control valve
3. throttle position error

but the engine's running fine. btw, its been converted to obd1. both obd1 & 2 gives the same error code.

checked my set-up below.

please help.

 

Whoever installed messed up on the wiring. Those items should be fixed. Just take it back and have them fix it. If you TPS is throwing a code though, it should idle pretty bad, or not run at 100%. The first two, he may have plugged the wires into the wrong sensor spot. They use the same plugs, so it could happen.

 

the idling's ok i think. at about 1000-1100rpm. the cam sprockets are adjusted already. so i think the idle control valve is pretty much useless now. could it be the O2 sensor? as i know, obd2 cars has 2 wires whereas obd1 has only one. the barometer pressure sensor is quite far from the other sensors right? is there any chance of mixing up the two?