fast99z28

my 99 z28 started to idle very low recently (400-500). Oil pressure drops, the lights dim etc... anyone have a clue whats going on????

autotrix

iTrader: (5)

A good start would be to check your battery condition, connections and the charging system.

fast99z28

thanks

DaddySS

What has changed? Are you using the same gas, did you do anything under the hood, etc. Two things control idle, the stop on the TB and the motor and cable on the right fender. Check those too.

The lights dimming etc. is because of the low RPM.

Weezzer

Pull the IAC valve off the TB and clean it with carb cleaner.

96slow6

Tha Iac doesnt usually cause a low idle. It will cause a step in idle or a high idle if its sticking. It wouldnt however just idle low period. And the flux of the lights definatly points to a power source or ground problem.

Weezzer

When ever I've had a problem with low idle or wouldn't hold an idle it was a dirty IAC.

96slow6

If it wont hold idle i would agree. Im not saying you are wronge just not what i have seen. But like i always say i have an lt1 wtf would i know?

qwkta98

change ur spark plugs