Question about 1997 Chevrolet Cavalier
CHECK FUEL PRESSURE IF OK CHECK ON DATA COOLANT SENSOR THERE CAN BE MORE CAUSES ON THIS SYSTEM
Posted on Jun 29, 2009
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Posted on Jan 02, 2017
SOURCE: PO171B Bank 1 System
Engine lean means you are getting too much air in relation to the amount of fuel. Thats the easy part the hard part is fixing it.Many different factors cause this. If your vacuum hoses leak anywhere under the hood or under the dash, If your evap system has a leak, EGR or PVC valves can be leaking If your intake manifold gaskets leak it will also show running lean. If you are running without an air filter or leaks around the air filter or if your gas cap gasket is worn. This is probably the hardest code to fix. If you just start changinng the parts it will cost a fortune. You may want to find a trusted mechanic and let them do it. Good Luck
Posted on Sep 26, 2010
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