83,000 mi should i change oxygen sensor??

[L98corvette]

Hi guys, i have done a complete tune up on my 91, it has 83,000 mi on it, runs great, should i go ahead and change the oxygen sensor??

 

[Edmond]

For the $30-40 that it would cost you, I would do it. It will restore driveability, fuel efficiency and response back to where it should be.

 

[vetteboy86]

For the $30-40 that it would cost you, I would do it. It will restore driveability, fuel efficiency and response back to where it should be.

It might be cheaper than that actually Edmond. Autozone has them for 18.99. On that note, why not change it just like Edmond said.

 

[Edmond]

It might be cheaper than that actually Edmond. Autozone has them for 18.99. On that note, why not change it just like Edmond said.

That's even better!

It's such an easy job to do. You'd probably spend more time driving the car on the Rhino ramps and disconnecting the negative battery terminal than you would actually changing the O2 sensor. Go ahead and do it, the car deserves it.

 

[Robertwav1]

It might be cheaper than that actually Edmond. Autozone has them for 18.99. On that note, why not change it just like Edmond said.

I'm gonna check into that myself for that price. Is there just one for a 93? I've been under the car enough times but don't recall.

 

[John Robinson]

o2 Sensors 93

I'm gonna check into that myself for that price. Is there just one for a 93? I've been under the car enough times but don't recall.

According to my Service manual on the 93 there are two O2 Sensors. They are the heated model and each one is in the cat for each exhaust manifold. This is the case for Both the the Vin P and Vin J engine. I also would be interested in the price from Advance Auto I believe these are more expensive because they are the heated model. The manual does have a very good section on how to check the sensors in the car. I have an old addage if it isn't broke don't fix it. If as you say the car is running fine why spend the money. I believe you will know when a sensor goes bad.:confused

 

[gmjunkie]

According to my Service manual on the 93 there are two O2 Sensors. They are the heated model and each one is in the cat for each exhaust manifold. This is the case for Both the the Vin P and Vin J engine. I also would be interested in the price from Advance Auto I believe these are more expensive because they are the heated model. The manual does have a very good section on how to check the sensors in the car. I have an old addage if it isn't broke don't fix it. If as you say the car is running fine why spend the money. I believe you will know when a sensor goes bad.:confused

If it ain't Broke,Don't fix it!! If it is not tripping a light or code it's not broke!! I don't use after market sencers anymore!! I have had BIG Problems with after market sencers and EGR's from Advance and Auto Zone!!!!!!! (Sornsen,Thomco,BCS,Autolite,Nepco) If it is not AC on a GM your just asking for Problems!! I'd do the Job Right the First Time!! The second time the Job don't pay worth a Damn!!:ugh

 

[onedef92]

It certainly wouldn't hurt although some people would say don't bother unless you're noticing significant drops in fuel economy. I believe the service life of the sensor is approximately 50,000 miles.

Are you going to go with A/C Delco, Bosch or Denso sensors?

 

[Edmond]

That's the problem, the sensor will gradually start to fail and your perception of mileage and throttle response falls underneath the threshold of sensory because you're driving the car constantly.

I still say to change it. If it is an original from '93, it is time. Changing parts isn't based solely on mileage or failure. In theory, that sensor could be in a garage queen that has 20 miles on it and fail because of age. It's a sensitive electrical component we're talking about here.

 

[onedef92]

That's the problem, the sensor will gradually start to fail and your perception of mileage and throttle response falls underneath the threshold of sensory because you're driving the car constantly.

I still say to change it. If it is an original from '93, it is time. Changing parts isn't based solely on mileage or failure. In theory, that sensor could be in a garage queen that has 20 miles on it and fail because of age. It's a sensitive electrical component we're talking about here.

Edmond, do you like the Denso, Bosch or A/C Delco sensors?

 

[Robertwav1]

If it ain't Broke,Don't fix it!! If it is not tripping a light or code it's not broke!! I don't use after market sencers anymore!! I have had BIG Problems with after market sencers and EGR's from Advance and Auto Zone!!!!!!! (Sornsen,Thomco,BCS,Autolite,Nepco) If it is not AC on a GM your just asking for Problems!! I'd do the Job Right the First Time!! The second time the Job don't pay worth a Damn!!:ugh

Good advice, that's what I'll do. No lights ... No codes ... car runs well ... 80K .... I'll think about it at 100K again. I guess the best thing to do is remove them first and take them with you. I always run into some question that I don't know and get the wrong part. This much I have learned

Edmond, I've read that somewhere also to replace every 60K. What about all the other sensors? I sorta like to trust the CPU to tell me when something's wrong.... unless there's a malfunction with it of course. Parts are expensive and I have a tendancy to replace only when needed. My opinion of course. Enjoyed all the comments on this!

 

[Mad-Mic]

Good advice, that's what I'll do. No lights ... No codes ... car runs well ... 80K .... I'll think about it at 100K again. I guess the best thing to do is remove them first and take them with you. I always run into some question that I don't know and get the wrong part. This much I have learned

Edmond, I've read that somewhere also to replace every 60K. What about all the other sensors? I sorta like to trust the CPU to tell me when something's wrong.... unless there's a malfunction with it of course. Parts are expensive and I have a tendancy to replace only when needed. My opinion of course. Enjoyed all the comments on this!

thats the problem a failing O2 sensor especially on L98 cars WILL NOT give you a code. one day you will start the car up and smell fuel and will be like this thing is running rich and you will give it a tune up, change the air filter, ect and it will keep doing the same thing. thinking there is no code is the norm. then the car just doesn't have it's pep and you sell it to a guy like me that changes the O2 sensor and it's back to burning rubber

O2 sensors are like spark plugs. they foul out and report a slow or lazy signal back to the ecm telling it to adjust for a rich or lean factor. once it is totally burnt out the car automatically adjusts for a lean factor (safe factor) and the car runs extremely rich. this part is the one usually over looked and never changed out and is the most important to the proper air fuel ratio of the car. too rich and the car is sluggish too lean and boom.

 

[Edmond]

Mic is totally right. If the O2 sensor is failing, the CPU will compensate for that. You won't notice it because it usually fails gradually and it's below the threshold of what you notice. If the O2 has totally failed, you should get a SES light. Then again, I believe that the O2 sensor is a routine maintenance item. Why wait until it fails in order to replace it? Do you let yourself get sick before you take good care of yourself?

I have used the Bosch with no problems. They are about $30 at Murray's, probably cheaper if you catch them on sale. For that price, why not? If you question spending $30 on a Corvette, you're driving the wrong car.

 

[Robertwav1]

According to my Service manual on the 93 there are two O2 Sensors. They are the heated model and each one is in the cat for each exhaust manifold. This is the case for Both the the Vin P and Vin J engine. I also would be interested in the price from Advance Auto I believe these are more expensive because they are the heated model. The manual does have a very good section on how to check the sensors in the car. I have an old addage if it isn't broke don't fix it. If as you say the car is running fine why spend the money. I believe you will know when a sensor goes bad.:confused

Okay...I'm convinced, think I'll go with the original "GM" part though like "junk" suggested. Thanks all.

 

[Achilles]

I have had BIG Problems with after market sencers and EGR's from Advance and Auto Zone!!!!!!! (Sornsen,Thomco,BCS,Autolite,Nepco) If it is not AC on a GM your just asking for Problems!! I'd do the Job Right the First Time!! The second time the Job don't pay worth a Damn!!:ugh

I have to agree. It doesn't pay to use the cheap stuff. We had our O2 sensors replaced about 25,000 mi. ago. Don't know what brand the mechanic used, but the car just started acting up yesterday the same as it did before....using a ton of fuel and slugish...rough...blah, blah, blah!

Now I have to replace them things again! I'll do it myself this time with the good parts. You get what you pay for!

 

[BLACKTALON]

Good info guy's

I thought my fuel filter had something to do with why my car doesen't have the shread the rears any more.I jus hit 73k and I knw now that the O2's need changing. My AFR is 12 alway across the last time we dynoed.

 

[Mad-Mic]

I thought my fuel filter had something to do with why my car doesen't have the shread the rears any more.I jus hit 73k and I knw now that the O2's need changing. My AFR is 12 alway across the last time we dynoed.

here's mine.

right on the money

 

[onedef92]

I'm going with either the A/C Delco or Denso sensors from www. buyautoparts.com You can get the AC/Delco's for $23.32 and the Denso for $26.09. They have the Bosch units for $18.25.

http://catalog.buyautoparts.com/mer...del=CORV--005&category=All&part=Oxygen+Sensor