Tip & How-To about Acura Integra
O2 sensor needs to be
replaced when you get low gas mileage in car.
So before replacing the
sensor it needs to be tested.
The procedure to test O2
sensor is as follows: ---
1) First drive the
vehicle for 15 minutes in normal temperature.
2) Then Stop the vehicle
in park mode and turn the engine off.
3) You will see primary
O2 sensor on the exhaust manifold, the manifold will be very hot
to touch so take care.
4)
The function of O2 sensor in the car is to measure the amount of
oxygen in car and then send that information to engine to adjust fuel pressure.
5)
Now to measure the O2 sensor reading. Carefully disconnect the wire at the O2
connector, and hook the positive lead of volt meter to the O2 sensor side of
the connector and connect the positive lead of volt meter to harness side of
the connector.
6)
In the O2 sensor you will notice two black wires that are not used for testing.
7)
Now before beginning the important part of the testing procedure,
check out properly that wires of O2 sensor and wires of volt meter are not
getting touch to any other metal part or the manifold.
8)
After checked and confirmed. Now start the car and see the voltage in engine
idle position.
9)
The reading will go high or go low but the average reading that it should show
is 500 mV.
10)
Now let the engine run and with engine running disconnect the fuel
pressure regulator vacuum hose, and plug the hose with your finger.
11)
The 500 mV reading will go to 700-800 mV.now remove the finger the reading
will fall low to 300 mV.
12)
But if these readings are not showing properly that indicates the fault in the
sensor.
13)
The secondary O2 sensor is located after the catalytic converter. The procedure
to measure secondary O2 sensor is exactly the same like how you measured the
primary O2 sensor.
14) The secondary oxygen
sensor is located under the car.
15) Put the car on jack
stands on the rack, this will give you proper sensor location in the car.
16)
You can test secondary O2 sensor to conform the fault before replacing the O2
sensor.
17)
The cost of replacing the O2 sensor is near to $100.This cost is for if you do
it yourself.
This
will help. Thanks.
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