1989 o2 sensor
Thread Starter
Pro
Joined: May 2012
Posts: 520
Likes: 9
1989 o2 sensor
I am thinking of pulling my lead and just installing an O2 sensor outside of exhaust ( strapped to something) This way the computer reads it ,it also registers clean air. Seems to easy what am I missing , my car is far from original so that means nothing to me.
Le Mans Master
Joined: Jul 2004
Posts: 6,227
Likes: 697
From: Clifton Park, NY ............Clearwater, FL ... 85 Original Owner
not sure that's the way it reads
Thread Starter
Pro
Joined: May 2012
Posts: 520
Likes: 9
I am blowing a code every so often don't know what it is , very intermittent, and was just curious as to if it was the o2 sensor would this trick the computer into believing everything is ok . I am going to do it no matter what and just see. My car seems to run very little different with the o2 sensor plugged in or not so nothing lost. Now its a single wire connector so I imagine I need to ground the sensor in order for it to work. Car doesn't run bad and passes our smog tests with all the air disconnected and plugged.
Thread Starter
Pro
Joined: May 2012
Posts: 520
Likes: 9
hmm hooked up the new 02 sensor this way no difference at idle anyways will install permanently over the weekend.
i decided for ***** and giggles to unhook the vacuum line going to my erv valve ant the throttle body i noticed no difference i then checked for vacumn in the line, nothing? this line is coming from the drivers side front somewhere i will check out ? are these not supposed to have vacumn at all times?
i decided for ***** and giggles to unhook the vacuum line going to my erv valve ant the throttle body i noticed no difference i then checked for vacumn in the line, nothing? this line is coming from the drivers side front somewhere i will check out ? are these not supposed to have vacumn at all times?
Racer
Joined: Oct 2006
Posts: 378
Likes: 20
From: East Hampton CT
You need to install the new O2 sensor
I'm in the process of replacing mine now. Bosch 12014 is the direct replacement.
Questions
Did you jumper the diagnostics connector and read the flashing light to determine the O2 was bad?
https://www.corvetteforum.com/forums...ght-codes.html
If you just hook up the new sensor outside, it will trip a fault code as it will not reach operating temperature.
Do you have headers or stock exhaust manifolds?
If you have headers, a heated O2 sensor will be required as the location of the O2 sensor is moved to far down stream of the exhaust and will not get up to temperature to read correctly.
Removing the O2 will require soaking in PB Blaster, or heating with torch.
Questions
Did you jumper the diagnostics connector and read the flashing light to determine the O2 was bad?
https://www.corvetteforum.com/forums...ght-codes.html
If you just hook up the new sensor outside, it will trip a fault code as it will not reach operating temperature.
Do you have headers or stock exhaust manifolds?
If you have headers, a heated O2 sensor will be required as the location of the O2 sensor is moved to far down stream of the exhaust and will not get up to temperature to read correctly.
Removing the O2 will require soaking in PB Blaster, or heating with torch.
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Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
If the O2 sensor is connected outside the exhaust pipe the ECM will never go into closed loop mode.
The O2 sensor generates a voltage and it must be HOT to do that. The ECM looks for that voltage and THEN goes into closed loop mode. See the video for an explanation of how this works.
The O2 sensor generates a voltage and it must be HOT to do that. The ECM looks for that voltage and THEN goes into closed loop mode. See the video for an explanation of how this works.
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
i decided for ***** and giggles to unhook the vacuum line going to my erv valve ant the throttle body i noticed no difference i then checked for vacumn in the line, nothing? this line is coming from the drivers side front somewhere i will check out ? are these not supposed to have vacumn at all times?