check engine light
Racer
Joined: Oct 2011
Posts: 392
Likes: 6
From: woodstock ga
lets assume that it is Just a faulty O2 sensor, no real problem there. while riding around with the check engine light on something more critical to longevity of the vehicle goes bad. since the check engine light was already illuminated you would never know. the code for the o2 sensor should tell bank 1 or bank 2. if you dont want to buy new sensors you may want to remove them and clean them with carb cleaner and reinstall.
Race Director
Joined: Jan 2008
Posts: 16,027
Likes: 169
From: oregon
front o2 sensors are $20 something each for a quality denso sensor via rock auto. they take all of a couple minutes to screw in
say $50 shipped and 30 minutes to jack the car up, use a 7/8 wrench and screw them in
the code will be specific to what failed. 9 times out of 10 it's the front.
hell if you're REALLY cheap i'll send you a single working oem front for shipping
say $50 shipped and 30 minutes to jack the car up, use a 7/8 wrench and screw them in
the code will be specific to what failed. 9 times out of 10 it's the front.
hell if you're REALLY cheap i'll send you a single working oem front for shipping
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Safety Car
Joined: Nov 2000
Posts: 4,419
Likes: 6
From: Arroyo Grande CA
A few years back, after tracking my Vette, The CEL came on. I think it was an overheated O2 sensor. Once it cooled down and I quit pushing the car the CEL went off on it's own. It was like the next day or so.
I read somewhere, can't remember where, that if the code didn't come back, it would clear itself after so many ignition cycles. Which it appears to have done. Hasn't happened since.
I read somewhere, can't remember where, that if the code didn't come back, it would clear itself after so many ignition cycles. Which it appears to have done. Hasn't happened since.
Team Owner
Joined: May 2006
Posts: 21,473
Likes: 356
From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
Le Mans Master
Joined: Jan 2004
Posts: 9,488
Likes: 1,743
From: Knoxville Tn
How did we ever survive without check engine lights, active handling, traction control, air bags, tire pressure monitoring systems etc.....? My ole "55" Chevy has been on the road and driving for 58 years and still going strong. My "99" Corvette only has 44 years to go to equal that. With all the "bells& whistles" it's got I'm sure it will!
Drifting
Joined: Feb 2006
Posts: 1,600
Likes: 2
From: Outer banks North Carolina
You're 55 Chevy was designed to get 20MPG on the highway, last maybe 5 years and 100,000 miles. The new cars with all their bells and whistles are somewhat different. Do you still run bias ply tires and drum brakes on your 55? There's more than one reason restomods are so popular. Think about it.
Last edited by C5Wolfe; Sep 8, 2013 at 07:47 PM.
Le Mans Master
Joined: Jun 2008
Posts: 5,284
Likes: 235
From: Rockledge FL
Le Mans Master
Joined: Jan 2004
Posts: 9,488
Likes: 1,743
From: Knoxville Tn
Racer
Joined: Dec 2012
Posts: 260
Likes: 1
From: Cape Coral FL
The issue with the CEL and a bad O2 sensor is that it can ruin your CAT if the O2 allows unburnt fuel in the CAT - then the big bucks come into play along with much more work on your end. And if your state has emission tests you are not going to get around that (as my state does). Reset the code and see if it returns, but don't ignore it for long.
Race Director
Joined: Jan 2008
Posts: 16,027
Likes: 169
From: oregon
The issue with the CEL and a bad O2 sensor is that it can ruin your CAT if the O2 allows unburnt fuel in the CAT - then the big bucks come into play along with much more work on your end. And if your state has emission tests you are not going to get around that (as my state does). Reset the code and see if it returns, but don't ignore it for long.
most ecu's default to a fixed 10:1 AFR when the 02s are unresponsive. that's probably 10mpg, maybe 12
won't take long to pay for the o2s
Melting Slicks
Joined: Jul 2012
Posts: 2,507
Likes: 9
Guy is saving what? A few dollars?? He'll spend more when other things start failing (and he spends more on FUEL). Just another person that has no clue. Cars can actually WARN you of impending issues, if your FOOL enough to IGNORE the warning, do so at you peril!