Engine Warning Light / Buzzer

(tcaton) · (tcaton) **Join Date: Sep 2002** 07-27-2005, 11:58 AM

My dash light and buzzer are on all the time and I show good oil pressure and water temp. My question is the warning system go to the ECM I do have two water and oil sending units could one of the be bad causing the alarm.

(rodmcinnis) · (rodmcinnis) **Join Date: Sep 2002** 07-27-2005, 12:06 PM

What is the voltage?

If I have the stereo cranking, the bilge blower on, and the ballast tank pumps filling/emptying the alternator will not keep up with the demand and my warning buzzer annoys the crap out of me.

(gatorhator) · (gatorhator) **Join Date: Jun 2005** 07-27-2005, 12:09 PM

Is it an onlder Malibu?
If so the water temp and oil pressure as well as the Fule warning are set WAY too sensitive. trust your gauges.

(tcaton) · (tcaton) **Join Date: Sep 2002** 07-27-2005, 12:13 PM

Voltage is fine and it is on a MB Sport with a PCM Apex 350. The light is on all the time any other thought on this

click24 07-29-2005, 9:13 AM

i have the same boat and mine does the same thing, it is very common at low rpm's. if you top off your oil it will go away but it is no neccessary if u can stand the buzz

(csquared) · (csquared) **Join Date: Jan 2002** 07-29-2005, 7:26 PM

Disconnect the battery for 10 minutes and see if it continues. Some of the PCM ECMs will hold an error code until it is reset.

If that doesn't work, look for a bad sensor.