As I mentioned, I pulled the MAF sensor and cleaned it with brake fluid, reset the codes and ran well and still running well, except the check engine light came on in 30 days, not immediately. It was only running the car at 75 mph did the light re-occur. I can't believe it would be the oxygen sensor...wouldn't a problem show up immediately with the check engine light? And have you heard of any problem with oil burning in 2000 prizms? Tks. Rex
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Re: Check Engine Light on 2000 Prizm
Most likely replacing the O2 sensor will fix this code, but that is not 100%, it could be other issues like a vacuum leak or a MAF sensor. The O2 is the one in front or on the engine side of the catalytic converter.
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The check engine light is on to tell you the computer has found a problem that will affect performance, gas mileage, or emissions. Such as the code 171 you asked about. Code 171 is for the fuel mixture on bank one being too lean. The O2 sensor is telling the computer the fuel mixture is too lean and the computer can not make it rich enough.
hi, the main cause of major oil consumption is due to cylinder wall deterioration. this is caused be bad piston ring sets that tend to chip of tiny pieces of the cylinder walls over a long period of time. this will start to show in engines with high millage. this will also lead to compression loss as well if it is not fixed soon.
To fix this issue within the cylinder walls, they will have to be machined and a new set of piston rings will have to be fitted around each affected piston. this will stop the oil from leaking into the combustion chamber and it will restore the compression rate as well.
Is there a few possibilities for a Low mileage per gallon on any car.
But I will mention the more Importants.
The Spark plugs.
Depend on the Mileage on your car, Normally For a Prizm.
The spark plug should be changed every 30,000 Miles.
With Factory Dippon Denso ( ND) or NGK. Both are factory replacement.
Check for any Vaccum leak on the Intake Manifold and The Big Rubber hose from the Throttle Body
To the Air filter.. Or any restriction on the Big rubber hose.
Is very Important to Have changed the Oil every 3,000 miles.
Incredible But Old oil made any car to have low mileage per gallon.
Check the condition of the Transmission Fluid .
Is nessesary to change the first time at 60,000, and after Every 20,000 or 30,000 miles.
To old or burn Transmission fluid made the car run on more RPM to get power.
Compare with new oil ,
Ok. is there a few more things but check this first and let me know.
I hope this help on your question.
Thank you for use fixya.