Increase gas mileage
Has anyone experienced improvement on gas mileage on their car after replacing the upper oxygen sensor and ignition coils? Before the replacement when I see 2 lines on the gas gauge the car spins around 500km now after replacement I get around 590km. Wife is the one driving the car and she uses it as her daily and the gps is showing same route and average speed on every trip.
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Hello,
I have a 2009 S with 140K miles and, "yes", I noticed a increase (actually, a return to normal good mpg) when I replaced spark plugs, coils, and both O2 sensors. W |
Replacing the O2 sensor, spark plugs, and coils will make the burn much more efficient, which leads to better fuel mileage. Shouldn't be much of a surprise, but rather emphasizes the need for regular maintenance on those items.
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How often would O2 sensors need to be replaced?
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Originally Posted by DVLDOG
(Post 4481508)
How often would O2 sensors need to be replaced?
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Originally Posted by njaremka
(Post 4481552)
The O2 sensors should only need replacement when they start to give OBD faults.
That's how I have worked it on all of my other vehicles. Reading it here it seemed they were being changed for no error reason....thanks! |
How about spark plugs and coils? Whats the good change interval? Should the coil be replaced when it acts up?
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For my non-s R56, I see wear on coils and plugs around 40K miles
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What should I look for to see coil wear? Traces of arcing?
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