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Wrong scanner?? If a check engine light is on, there are codes.

Timing sensor? Check engine usually means a problem... Service means that scheduled service needs to be performed like oil change, or timing belt replacement.

I would Check your Catalytic Converter. What often happens is the catalyst that is in the Catalytic converter Heats up and Blows out into your Muffler.

This means It is not the sensor,but your converter and Muffler Need Replaced.I have just fixed two cars with this problem,and they had the same symptoms,Check engine Light.

2015-07-14 16:04:06
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Q: 2001 Pathfinder engine light problem you replaced 2 oxygen sensors then replaced 2 timing sensors the service engine light still on computer shows no code?
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Related Questions

How many oxygen sensors does 2002 Nissan Pathfinder has?

And they are expensive to replace... (i replaced one @ $400)

Where are 2002 pathfinder oxygen sensors?

The 2002 Pathfinder oxygen sensors are critical part of the engine management system. You can find the oxygen sensors in the exhaust system.

How many oxygen sensors does a 2000 Nissan Pathfinder engine have?

The 2000 Nissan Pathfinder has a total of four oxygen sensors - two before the catalytic converter, and two after the converter. The front sensors have 3-wires, and the rear sensors have 4-wires. For a good quality OE-style sensor, they'll cost around $100 each.

What are the part numbers for the rear oxygen sensors on a 97 Nissan Pathfinder?

the part no. are 64,2387,79856

Check engine light came on after replacing both front O2 sensors on my '97 pathfinder-how can you get it to shut off?

Reset it with an OBD2 scan tool. If it came on after replacing the sensors you may have another problem. Reset it and see if it comes back on.

How often should o2 sensors be replaced?

They are replaced when they go bad.

How many oxygen sensor on pathfinder 1999?

4 oxygen sensors (2 front and 2 rear)

What would cause your 98 Durango to just shut down when going down the road I have replaced the pcm o2 sensors fuel pump relays throttle positioning sensor coil electronic pickup?

i had a problem with that on a dodge neon and i did the same things you did to fix the problem but it kept shutting down. Well to make a long story short it tuned out to be the computer( brainbox). replaced it and have not had a problem. This was common to the neon not sure on the durango but mabey something to look into

What does the speed sensor on auto transmission do 1994 pathfinder?

If you mean what is the purpose of the speed sensor on an auto transmission do, then the answer would be it replaces the speedometer cable. Basically it picks up how many revolutions the wheels are making and sends that to the ecu (the computer) and the computer computes how fast you are traveling. All speed sensors do the same job, just some for different purposes. Some cars have speed sensors on all wheels which is used for abs braking, while some (Like this pathfinder) have one used just to tell how fast you are going.

91 Chevy 4.3 running rich WHEN WARM UP?

If the oxygen sensors for the 1991 Chevy 4.3 is running rich when it is warmed up it is best to have the sensors replaced. Once the sensors are replaced this should resolve the issue.

What moves the mouse pointer?

In a ball mouse, the ball, which is moved by contact on a surface, has three directional roll sensors which transfer electrical signals to the computer which then moves the mouse pointer on the screen. In laser and optical mice, the roll sensors are replaced by lasers or infrared sensors, which detect which direction the mouse is moving. This is sent to the computer which moves the mouse pointer. Laser and optical mice are more accurate than ball mice, but don't work on reflective or transparen surfaces such as foil or glass, which is not a problem for ball mice.

What if 2003 Yukon keeps getting PO171 and PO174 codes Unlikely both or all 4 oxy sensors are bad?

Have you had your 4 oxygen sensors replaced? It turns out when they replaced my oxygen sensors, they were after market parts so the service engine light did not come and gave codes even though they were replaced.

What controls the idle on a 1999 ford windstar?

The computer does - there is no way to adjust it. If it is improper something is wrong with one of the sensors - that is the most likely problem.

What would cause a tranny to buck after being rebuilt and having all the solenoids replaced?

The trans may not be the problem. Depending on the car the mechanical linkages or electrnic controlers (computer) or sensors could be bad A competent mechnic with the right scanner can watch all this work and see the issue.

2000 Honda crv had cooling system ckd out and everything is fine but my temp gauge shoots up and stays on high within a few minutes of driving replaced thermostat and sensors?

ask your service station to do a compression test. I had the same problem and replaced all sensors and thermostat but after the test it was found out that there was a crack in the housing holding the thermostat

How do you change o2 sensors on 1996 Chevy Tahoe after cat?

The o2 sensors are before the Cat. the are connected the a computer so unhook them, They can be replaced with the right open end wrench. Make sure that the car has been allowed enoug htime to cool. Tixo

Your 1994 intrepid has a fast idle when in park when you start it and when in town it wants to drive at 45mph how can you fix it Tried to adjust idle already and nothing works?

I think it is all run off the computer. I would guess that some sensor or sensors are bad and need replaced because the sensors tell the computer how the gas and air mixture should be. I would take it and have a computer reading done on it to point you in the right direction as to which sensor/sensors may be acting up.

Can you clean the oxygen sensors on a Chevy blazer?

No, they will need replaced if defective.

How important are o2 sensors in cars?

The vehicles computer relies on the information from the 02 sensors and other sensors to adjust the engine for peak performance.

Why does a check engine light go on in a 1992 Toyota 4Runner with no loss of power and everything under the hood seems to be in proper order?

It could be a "slight" problem with the electronic sensors. If a "check engine" light is on, the computer has detected a problem with the sensors. You need to use a code scanner to detect the fault code.

Very high idle on 1996 Saturn?

have you had it serviced recently? your computer may be re-learning its idle pattern if any engine management sensors or devices have been replaced recently.

Where is the 1998 Mazda transmission sensor located?

You will need to explain your problem. The transmission has it's own computer and sensors. Without knowing your situation it will be hard to diagnosis.

Getting a oxygen sensor code changed sensors reset code code came back on whats goin on?

Wiring, computer, or engine mechanical problem.

Where is the oil sending unit located on a 2000 Nissan pathfinder?

It is important to know the location of all the sensors within a vehicle. The Oil sending unit in a 2000 Nissan Pathfinder is on the engine block, close to the oil pan.?æ

The exhaust from the cat on back including the O2 sensors have been replaced yet the 1994 Oldsmobile Bravada acts like it is getting too much gas Any suggestions?

I had the same problem..... Throttle position sensor .... Mine was defective and was telling the computer that the gas peddle was down all the time....