Question about 1990 Ford Thunderbird

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If the oxygen sensor ( up stream ) has not been replaced in more than a couple of years ,will this cause my cars perfomance to run badly ?

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1 Answer

The upstream O2 gets replaced every 100,000 miles

Won't run really bad if you just have a check light on
but performance won't be so good.

Posted on Dec 05, 2012

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Posted on Jan 02, 2017

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dutchman05
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SOURCE: oxygen sensor

yes it does. Your computer can not calculate how much gas is needed for real and that will make it run rough to say the least. To change them is quite easy
just in front or just after the first bend of your exhaust.
unplug and unscrew.

Posted on May 17, 2008

chiquititas
  • 1010 Answers

SOURCE: smog failed cause cam sensor

You should check the make sure the thermostat operates normally and that the fuel octane is 87 or higher (usually the lowest grade available at the station, so I doubt this is the issue). If your engine temperature isn't too high and the fuel is 87 octane or more, I'd expect you probably have a catalytic converter issue

Posted on Jun 24, 2008

  • 91 Answers

SOURCE: oxygen sensor keeps going bad,

It could be the problem or he just wants to make a lot if money. I had a similar problem and it turned out to be electrical. I had another component out that caused an abnormal electrical condition, it could be happening to you. Check to make sure the sensor is within it electrical limits, (volts, amps, and ohms) and then refer to your vehicles electrical schematic to find relative components within the system. Don't go rippin into you motor, yanking off the heads, until you eliminate the problem as being electrical. get a good multimeter and remember, its only a 12v system. good luck

Posted on Aug 15, 2008

  • 5 Answers

SOURCE: check engine light on,idols rough,fine at all other speeds.

I decided to check the idol air control valve,when I removed it I found the problem right behind it. The P C V valve hose was just about into where it fastens to the intake,the other end was bad also. Cost me aout $6.00 Where auto parts stores were telling me parts would cost two or three hundred $$.

Posted on Jan 21, 2009

csmock132
  • 4669 Answers

SOURCE: check engine light on,idols rough,fine at all other speeds.

It either has a vacuum leak or a dirty MAF. To test for vac leaks spray the engine with carb cleaner to see if the engine speed changes., if it does you fond the leak. The most common leak is pcv line coming straight off the back of the throttle body. Check there first. Also check to make sure there are no air leaks between the throttle body and the mass air flow. Don't replace the idle speed motor or the tps, they won't fix it. It is possible the o2 is the problem, but it usually isn't. P0107 Is usually always from the stuff i listed above.

Posted on Mar 01, 2009

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4 Answers

What causes the oxygen sensors to keep going bad in a 2001 Ford F-150?


Contamination from oil comsumtion your engine probably go thrue lots of oil

Mar 24, 2015 | Ford F-150 Cars & Trucks

1 Answer

How to test oxygen sensor


When we detect a lean mixture code from our vehicles, our first reaction may be to replace the oxygen sensor. However, testing oxygen sensors before replacing them is a good idea. The best way to check the operation of the sensor is to run a simple test. And all you need is a voltmeter. A voltmeter is usually cheaper than car diagnostic tools and is available within 100 eurs. Here I will use an original Autel PowerScan PS100 for 56 eurs from EOBD2.FR.
How to check if your oxygen sensor is bad and needs to be replaced:
Step 1. Find the oxygen sensor sensing wire, connect Autel PS100 to the feedback wire and ground and then choose the mili volt operation.
Step 2. Turn on the ignition key to start the vehicle and run the engine at idle to warm it up. Watch data on PS100. The voltage should move slightly at whatever voltage the sensor is centered at.
Step 3. When you pull the oxygen sensor data stream up, the output voltage from the sensors should constantly bounce between high and low with the meter dropping and rising, as the engine is running in closed loop. The volt meter should stabilize at the original operating voltage when the engine returns to idle.
If your oxygen sensor does not show the above reactions, it is probably that it is bad.
Note: If the error code shows a malfunction exists with related components such as an engine misfire or other engine problems, please do not perform this test.

Jul 09, 2014 | 2000 Buick LeSabre

1 Answer

How will engin run if oxygen sensor is bad


THE OXYGEN SENSOR helps to control the delivery & performance of the FUEL & AIR MIXTURE, TELLS COMPUTER the amount of oxygen in the exhaust, which inturn, the computer delivers more fuel,air, etc., to your demand ! it also works with all the other sensors so they may perform their duties, and not have to compensate for lack of its perfomance, I can talk all day about why ? engine will run like sh-t !!!!!!

Mar 24, 2013 | 1989 Nissan Pathfinder

1 Answer

Car was running then it stopped starting it turns over fine but theres no sign of a spark


according to this

http://www.acuralegendwiki.org/index.php/G2:_FAQ:_Error_Codes_And_Definitions

41 Left Heated Oxygen Sensor Heater 42 Right Heated Oxygen Sensor Heater
and

15 Ignition Output Signal

So you have a couple problems. The car won't start because more than likely the ignition switch has gone bad and needs replacing.

The O2 sensors will cause your CEL to be on and these will need to be replaced as well.

Feb 07, 2013 | 1993 Acura Legend

1 Answer

What does code p0411 on 2008 Envoy


Diagnostic Test Code (DTC) P0411 is defined by SAE J2012 as "Secondary Air Injection System Incorrect Flow Detected"

This DTC runs when the air injection pump and the air injection control solenoid do not have any detectible electrical faults. The PCM commands the pump to run and the solenoid to open and add forced air to the exhaust stream. The PCM then looks at the oxygen sensors in the exhaust to see if there is added oxygen in the exhaust as expected. If the oxygen sensors do not indicate that added oxygen is present, DTCP0411 sets.

There is also an air pressure sensor involved in this system, but I have never replaced one of these...failure is rare.

With all that said, I have replaced MANY air injection control solenoids to fix this fault. I have also replaced a couple pump motors, but not nearly as many as the solenoids.

The air injection pump is located under the vehicle below the driver's seat. You should be able to hear it running occasionally - it sounds like a small vacuum cleaner when it runs. If the pump runs, this is not likely to be the problem and you will most likely have to replace the solenoid.

The solenoid is located on the right side of the cylinder head. (see diagram)

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May 17, 2012 | GMC Envoy Cars & Trucks

1 Answer

Need to replace oxygen sensor


TO REPLACE OXYGEN YOU NEED A SLOTTED SOCKET AND A TUBE ANTI SEIZE COMPOUND. MOST OF THE TIME NEW OXYGEN SENSOR ALREADY HAS ANTI SEIZE COMPOUND USED ON THE THREADS.TO REPLACE OXYGEN SENSOR FIRST CRANK VECHICLE FOR A FEW MINUTES SO YOU CAN REMOVE OXYGEN SENSOR MORE EASILY. ONCE YOU GET THE EXHAUST LITTLE WARM.YOU DISCONNECT OXYGEN SENSOR CONNECTOR TAKE SLOTTED SOCKET REMOVE OXYGEN SENSOR APPLY ANTI SEIZE ON OXYGEN SENSOR THREADS THE SCREW IT IN PLACE..WEAR LONG SLEEVES COVERALLS, SAFETY GLASSES KEEP RUST PARTICLES GETTING INTO YOUR EYES. AND LEATHER GLOVES KEEP HANDS FROM CUTS AND EXHAUST BURNS. IF YOU REPLACING DOWN STREAM OXYGEN SENSOR YOU HAVE TO RAISE VECHICLE SUPPORT ON JACKSTANDS. FOR UP STREAM OXYGEN SENSOR YOU CAN REPLACE WITHOUT RAISING THE VECHICLE.REASON I SAY CRANK ENGINE TO WARM UP EXHAUST SYSTEM BECAUSE METAL EXPANDS WHEN HOT THAT MAKES REMOVING OXYGEN SENSOR EASIER. IF YOU DONT CRANK VECHICLE THE COLD CAUSES METAL TO SHRINK MAKING HARDER TO REMOVE OXYGEN SENSOR.POSSIBLY DAMAGING SENSOR THREADS WHILE TRYING TO LOOSEN SENSOR FROM EXHAUST MANIFOLD OR PIPE. YOU CAN BUY SLOTTED SOCKET AND ANTI SEIZE COMPOUND AT ANY AUTO PARTS STORES.

Dec 30, 2010 | 1998 Lexus ES 300

1 Answer

Where is the oxygen sensor located on a lincoln town car 96


My 96 has 4 cat converters, 2 (upstream and down stream) on each side. There are 2 oxygen sensors on each side, before upstream converter and after upstream converter. But make sure they are bad before you replace them (4 of them will cost you about $200), and my 1996 with 175K has 3 original still running. Other sensors (air flow, coolant temp) might be the problem as well.

Sep 27, 2010 | 1996 Lincoln Town Car

1 Answer

One of my oxygen sensor is reading bad,do i have to change the other three ?


A bad oxygen sensor will cause an engine to run poor. Scan the computer, it will tell you which of the oxygen sensors has failed. Simply replace the sensor that is bad and the repair is complete, clear trouble codes.

Hope helps (remember rated this):

Jul 13, 2010 | 2003 GMC Yukon XL

2 Answers

What do my car need if they say i have a (bad)up scream senors----my car will cut of while driving, i have to wait for a while then it will start back up, check engine light is on.


upstream sensors are oxygen sensors there are up streams and down streams. there might be a problem with converter too. must read all codes then diagnose.one of them (oxygen and converter) could cause cause codes on each other

Feb 12, 2010 | 2002 Jaguar X-Type

1 Answer

$250 oxygen sensor parts only 2002 Jeep GC too much? needed?


YEP A BAD OXYGEN SENSOR WILL CAUSE ENGINE TO RUN RICH.CAUSING UNBURN FUEL TO GO TO THE CATALYTIC CONVERTER AND BURN IT OUT.

Aug 23, 2009 | 2002 Jeep Grand Cherokee

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