Question about 2009 Chevrolet Malibu
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Posted on Jan 02, 2017
This is probably referring to problems with your bank 1 oxygen sensor. Without the vehicle make, model and year I can't tell you where it is located. However, if you replace your front oxygen sensor that should clear up the problem. Also, if you do replace it, I always run some fuel injector cleaner through a full tank of gas at the same time. Hope this helps!
Posted on May 17, 2009
what this means is bank one is running weak ,this is caused by a problem with the O2 sensor on this side of the engine now a lot of more modern vehicles use two sensors one before the cat and one after the cat ,they are situated in the exhaust down pipe ,now iam not familiar with this vehicle so i cannot say if it has one or two sensors but put you head under the bonnet and see what is waht if it has two sensors then change the one after the cat first ,now their are four wires on a sensor and two of the colours are the same so disconect the plug and test the sensor for continuety on the two wires the same colour ,now if the continuety is ok this means the heater circuit is working ,now the other two wires will show the voltage over time but you will a special meter to check this like a automotive test meter which measures frequency and dwell which i doubt you have so just check the heater circuit on each sensor on the bank 1 and if in doubt just change them for a universal type and in the box comes a diagram on what colour wires go to the appropiate connection on the wiring loom as you will have to cut the plug off and use a strip type block connector unless you buy originals which are expensive compared to auto factor replacements .
Posted on Jan 28, 2011
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