Question about 2004 Nissan Murano
Service engine light will turn off after replacing bank 2 sensor twice; recent repais include new cat converter,exhaust manifold, all sensors,oil change,air filter. cannot psss emissions test. any suggestions will be helpful
Main problem that you have not addressed with the o2 sensor is the fact that the wires have been damaged and that there is a dead short to ground. Probably the wires are severely twisted and a wire has broken and touching the earth wire or the metal body of the sensor.
Posted on Dec 25, 2013
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Posted on Jan 02, 2017
the oxygen sensor looks like a spark plug with wires coming out of the top of it. it is screwed into the exhaust pipe near the engine. disconnect the wires and screw it out of the exhaust pipe turning it counterclockwise then screw the new one in and connect the wires. then clear the codes. one word of warning this is one of the most common codes and does not necessarily mean the sensor is bad. often it will appear if the engine is running too rich or lean because of another problem.
Posted on Jun 26, 2009
Are you the original buyer? If so I would have contacted nissan because most states have what is referred to as a lemon law. According to Statelawyers.com, Lemon Law refers to the statement from the government that was created to protect consumers from defects in automobile. An automobile that has manufacturing defect(s) or if it requires repeated repairs after purchase and if the automobile is under warranty period, such a vehicle is termed as a lemon.
A law was placed for the benefit of consumers to prevent them from a lemon vehicle. In a nut shell if any vehicle such as a car is under warranty period and is suffering from various defects that prevent a consumer to use the vehicle effectively then Lemon law act or the Magnuson Moss Act comes into force.
Lemon law can be enforced on any sort of vehicle like a car, truck, van, SUV, motorcycle, boat or computer, etc. If any of these consumer durables is found to be defective then the consumer is entitled for either money back, replacement or a cash settlement. The law can be consulted with a Lemon law attorney as various states have different lemon laws. Some states have a lemon law for only the automobiles but some also include other consumer durables like computers, etc.
A dealer or manufacturer should have made number of attempts to repair the vehicle before being declared as lemon. Usually three or more attempts in row over a short period of time are required for any vehicle to be termed as lemon. Lemon law is also applicable to vehicles which have been resold but are still under warranty and meet the mileage and time criteria. More often it is very difficult to persuade a manufacturer to accept a lemon vehicle. In such cases a lemon suit is often called for.
To ensure whether a vehicle is a lemon or not one should observe certain conditions of the vehicle before pursuing a lemon law suit. A vehicle should exhibit some serious defect or some abnormal condition. Such a condition should be covered by manufacturer's warranty. Number of attempts for repair should also be taken into account before preparing a lemon law suit. A written notice should have also been issued to the manufacturer prior to a lemon law suit.
A vehicle that has been bought back by the manufacturer from the customer is known as a Lemon Buy Back. Such lemon buy backs are often sold in auctions as used cars by the manufacturers.
The Lemon law enforced for protecting consumers from the lemon vehicles is Magnuson-Moss Warranty Act. This lemon law states that any advertised guarantee should explicitly state relevant information about a warranty. This law ensures that any warranty for goods above $15 should be clearly expressed on the goods and should be clear and easy to understand. The Magnuson-Moss Warranty act enables a consumer to bring suit to any manufacturer, supplier, warrantor, or service contractor for any defective piece of good or services.
A lemon vehicle explicitly loses market value due to its manufacturing defect. Moreover, manufacturing defects may lead to several life threatening circumstances. It also substantially impedes a person's ability to control or operate a motor vehicle for ordinary use or intended purposes. Any manufacturing defect can also create a substantial risk of fire or explosion. All these risk elements call for enforcement of Lemon law in the states of United States. This law helps consumer from all such threats and hazardous circumstances.
Posted on Jan 05, 2010
you may have a bad converter, its not cleaning the exhaust, but on the other hand a bad rear o2 sensor can also cause this problem,there is a wat to test but you would need a scan tool or scope,replace the other sensor, if light returns then replace the converter, no money lost, if you were to replace the converter the o2 sensors should also be replaced. you have 165000 miles it would be crazy not to replace sensor and install new cat, so basically your just doing it in 2 steps and may get lucky and not need a cat. good luck.
Posted on Mar 05, 2010
Testimonial: "Your information is exactly what I needed to know.I suppose I just did not want to spend the money for a cat. converter. Thanks again for your help. "
Here are the most common problems,
Air leaks at the exhaust manifold or in the exhaust pipes. Catalytic converter is damaged, contaminated or has failed. Front HO2S or rear HO2S is contaminated with fuel or moisture. Front HO2S and/or the rear HO2S is loose in the mounting hole. Front HO2S older (aged) than the rear HO2S (HO2S is lazy)
Your vehicle’s computer system has self-testing capability. When the computer senses that there is a problem with one of the components or sensors it stores the correspondent trouble code(s) in its memory and lights up the "Check Engine" or "Service Engine Soon" light to tell you that there is a problem and you need to diagnosed and repaired it. Autozone turning the light off does nothing for you, and is against their company policy. If you do not have the proper tool, reference materials or experience I would take it to a professional. Finding out the trouble code is just he start of the diagnosis process.
Posted on Mar 07, 2010
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