crashtest Sonny

iTrader: (1)

when you turn on your headlights, rpm goes down on idle? when i idle normal without lights on, i idle at 800. but when i turn on my headlights, it goes down to 500-300.

altoid

should pop up to 1000-1100

CHRIS 1.8

Your idle shouldn't drop down that low. Just adjust your idle up more.

altoid

or check your fast idle control solenoid. that could do it too, might throw a code for that one though

USDM 4G VTEC

yes it should drop
but then the engine rpms should slowly pick up again some more rpms bc of the electric load.... its called voltage regulator and the engine should compensate a lil when the rpms drop bc of load

crashtest Sonny

iTrader: (1)

the only code i have is knock sensor code. but then since i put on my chipped ecu, i have no code. another weird thing is...usually when my car is cold..the rpm is pretty high, like around 1500 - 1700, then it'll go down as it gets warmer. but when i warm up my car today, it sat at 800, then when it got warm, it went up to 1100. hahah weird.

crashtest Sonny

iTrader: (1)

?

incubus

it is possible that the grounds on the car need to be replaced.
that can have a bearing on your idle RPMS.
is your car idle hunting?

crashtest Sonny

iTrader: (1)

im not too sure.. but ill try and replace it.