Question about 1988 Oldsmobile Cutlass Ciera
You should not have to completely remove the exhaust, but dropping the front of it will greatly help in changing the O2 sensor. There IS a special socket for removing / installing the sensor that is a must have to prevent damaging the wires on the new sensor. The old sensor may be difficult to remove, so I suggest some type of rust buster sprayed on before removal. Where you need to separate the exhaust depends on which O2 sensor you're changing - usually there are at least 2, an upstream and a downstream, separated by the catalytic converter.
Posted on Nov 05, 2010
Yes a standard oxagen senser tool will get it outwith out dropping anything. It looks like a crows foot line wreanch. and a crows foot line wreanch will work. it's 7/8 inch. sometimes you can put a closed end wrench7/8 over the connector and put the wrench on you may have to try the wrench may ways till you find a way that fits. Most of the time once the senser is loose it'll come out with your fingers.
Posted on Nov 05, 2010
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Posted on Jan 02, 2017
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Nov 12, 2017 | Honda Cars & Trucks
Oct 12, 2011 | Cars & Trucks
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.
Aug 25, 2011 | 2006 Chevrolet Impala
REMOVAL & INSTALLATION WARNING
The oxygen sensors each use a permanently attached pigtail and connector. This pigtail should not be removed from the oxygen sensor. Damage or removal of the pigtail or connector could affect proper operation of the oxygen sensor.
NOTE Take care when handling an oxygen sensor. The in-line electrical connector and louvered end must be kept free of grease, dirt or other contaminants. Avoid using cleaning solvents of any type. DO NOT drop or roughly handle any oxygen sensor. GM says, "A dropped sensor is a bad sensor." A special anti-seize compound is used on the oxygen sensor threads. The compound consists of graphite suspended in fluid and glass beads. The graphite will burn away, but the glass beads will remain, hopefully making the sensor easier to remove. New or service sensors will already have the compound applied to the threads. If a sensor is removed from an engine and if for any reason is to be reinstalled, the threads must have anti-seize compound applied before reinstallation.
WARNING The heated oxygen sensor may be difficult to remove when the engine temperature is less than 120°F. Excessive force may damage the threads in the exhaust manifold or the exhaust pipe.
Fig. Note this special socket with a cutaway slot to accommodate the oxygen sensor's wire harness (pigtail)
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