Question about 2003 Oldsmobile Alero
Faulty heater control valve.Its located under the hood on the passenger side in front of the firewall.
Posted on Oct 29, 2012
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Posted on Jan 02, 2017
IF DECELERATION FUEL REDUCTION SYSTEM IS NOT OPERATING, FUEL ECONOMY WILL BE REDUCED WHILE HC AND CO EMISSIONS ARE INCREASD.SEE ON MANY ENGINES WITH DECELERATION FUEL REDUCTION SYSTEMS THE PCM STOPS GROUNDING THE INJECTORS IN A SPECIFIC RPM, DURING DECELERATION.
Posted on Jun 24, 2011
I had the same problem in my 03 alero. I turned the key into the on position pressed the gas peddle down 3 times and it went off and hasn't been on for over a month.
Posted on Jun 17, 2009
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