O2 Sensors replacement
I have a marginal CAT with a P0430 code and think it may have gotten plugged up after my AOS failure a 1000 miles ago.
I just ignored the Engine light hoping it would eventually improve after using some Techtron additive but it has been staying on more than off. I have a smog due in Nov so its time for action. I plan to run some "CRC Guaranteed To Pass Emissions Test Formula" and replace the rear O2 Sensors, plus use some MAF cleaner. Does anyone know the Brand Model number I should use for the post Cat Sensors, and a good source? I'm confused by the array offered online that supposedly fit as OE and range from $24-$80. Don't want to get an inferior or incompatible part. Ray |
Quote:
|
Since my P0430 code comes and goes, borderline, I thought that fresh sensors may be just enough to pass the smog.
I realize what you are saying is true but I need a slight nudge to pass the smog and since this has occured AFTER a major smoke fest with the AOS going out I feel that carbon from all that oil is what may be hampering/plugging my cat and sensors. I'll check the sensor Voltage curves and see if I can confirm what is happening. In theory the Cats should last forever if they don't get plugged, fouled or broken ceramic matrix. I take it the upstream O2 sensor voltage would be the nearly constant voltage and the downstream following the sine wave? |
|
If the sensor voltages are in the correct range, it ain't the sensors and putting in new ones will only make your wallet easier to sit on.
|
Quote:
Steve |
2 Attachment(s)
I'm in the same situation, and mine is due this month. I've read that O2 sensors that don't work properly will give you codes. Moreover, they say that if those stay within the correct voltage range (0.1 to 0.9 in this case, and downstream should try to stay at ~0.7 consistently, then they are OK. But I've also read that there are cases when O2 sensors get tired, and haven't triggered a code yet, but will affect their response time.
Anyway, you can get the Bosch ones from Amazon or RockAuto for about $80 to $100. The Universal one, which requires you to do the connector, is even cheaper at $60. Here are the voltages for my working bank 1 and dying bank 2 cats. |
O2 sensor and other emission CEL codes are not equivalent to smog test levels. Of course, you can't pass the test with a CEL. You say that the car is on the edge of triggering a code but it still could be WAY out of compliance for the smog test (or it could be within the limits).
I would suggest getting a smog pre-test done to see where the car really stands in terms of smog compliance. Many shops will do them cheaply and don't report the results to the state DOT/MOT. Having the actual numbers will go a long way in helping you to decide what needs to be done in order to get back in compliance (and you'll know for sure whether you a long way off or really just need a nudge to pass the test). Knowledge is power. |
Quote:
http://i1140.photobucket.com/albums/...ps6728ac22.jpg http://i1140.photobucket.com/albums/...pscd3fb45b.jpg http://i1140.photobucket.com/albums/...430Image-1.jpg http://i1140.photobucket.com/albums/...0430Image2.jpg |
JFP and others are right. If your sensor voltages are in spec and your read O2 readings are sine waves instead of essentially flat, your cats are cooked.
CA no longer does a tailpipe test for '00 and later cars. To pass, your CEL must be off, your monitoring systems should be ready, and I believe you mustn't have and stored emission codes. If you have a Durametric, check the O2 sensor voltages to confirm the problem. A few days before testing, clear CEL and stored codes. Drive the car several times until the monitoring systems reset. Then get the car tested. |
Used cats are not expensive and are perfectly acceptable! Just make sure they are guaranteed to be fully functional.
|
Here is a place that sell Calif legal replacement CATs
$170 rear / $186 front Search - 250-24647 250-24647 250-24647 250-24647 441204 441204 441204 444204 444204 444204 |
Quote:
|
While its true as NewArt says that used catalytic converters 'are perfectly acceptable" as a fix to a dead cat, California prohibits their installation. Here's a quote from the California Air Resources Board website:
|
All times are GMT -8. The time now is 09:08 PM. |
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website