Question about Chevrolet Cars & Trucks
the O2 sensor for bank one sensor one is located between the catalytic converter and the engine in the exhaust head pipe. see photo of your engine cylinder layout, the sensor u want to replace is the one at the cylinder #1 bank on right.
Posted on Apr 15, 2009
There is no sensor for a loose gas cap. What is happening is that the evaporative emission system is sensing a "Large Leak". Usually code p0455. The computer sees this as the most probable cause is a loose gas cap depending on several factors it looks at. You would need to clear the code(s) and see if that was the problem. If the light comes back on, then you have a problem in the system that will not let it seal. Possible solenoid problem, leaking hose / line, etc.
Posted on May 08, 2009
Follow the upper radiator hose, and where it connects to the engine, is the cover for the thermostat. There should be two bolts that hold it on, and a seal that will come with the new thermostat. You'll want to clamp off the radiator hose before unhooking it, so it doesn't leak anywhere. Then remove the hose, take the thermostat cover off, and dry everything off. Put the new thermostat in just as the old one came out, put the new seal on where the old one was, and bolt down. Hook the hose back up, and check for leaks periodically for a couple of weeks.
Posted on Oct 20, 2009
SOURCE: i need a diagram showing
Why would you need a diagram?
You simply need to educate yourself
O2 Sensors have been on vehicles over 25 years,and in the same place
Sensor 1--in exhaust pipe before converter or in converter
Sensor 2 in outlet of converter
An O2 Sensor Code---Does Not mean replace it
Posted on Oct 11, 2010
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Chevrolet Impala comes equipped with two oxygen sensors, one on either side of the catalytic converter. Locating the sensors is as simple as crawling under the vehicle.
The bank 1, sensor 2 oxygen sensor is located downstream of the catalytic converter. To get to the sensor, crawl underneath the vehicle and trace the exhaust pipe until you reach the catalytic converter. Continue to follow the exhaust pipe until you reach the bank 1, sensor 2 oxygen sensor.
You should be able to identify the oxygen sensor as a single wire about 3 to 6 inches long. The oxygen sensor is mounted to the exhaust pipe and should slightly protrude from the pipe.
The oxygen sensor is an important part of the vehicle exhaust system. The sensor tests the amount of air in the exhaust stream. It then sends this information to the engine control computer, which determines how much fuel is necessary to maintain a proper air-to-fuel ratio.
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