O2 Sensor question

Reply Subscribe

Thread Tools

08-13-2019 | 11:04 AM

Cerberus66

Thread Starter

Registered

Joined: May 2018

Posts: 175

Likes: 50

O2 Sensor question

Are any of you that run Holley HP EFI having a hard time with O2 sensor longevity? I was wondering if the moisture from Headers is killing my sensor.

08-13-2019 | 11:17 AM

Baja Rooster

Registered

Joined: Oct 2013

Posts: 2,888

Likes: 148

From: SF Bay Area

This guy has worked wonders for me.

EVIL ENERGY O2 Oxygen Sensor Bung M18x1.5 Copper https://www.amazon.com/dp/B07G81XZZT/ref=cm_sw_r_cp_api_i_yjUuDbNF6YSVJ

08-13-2019 | 02:42 PM

Cerberus66

Thread Starter

Registered

Joined: May 2018

Posts: 175

Likes: 50

Quote:

Originally Posted by Baja Rooster

This guy has worked wonders for me.

EVIL ENERGY O2 Oxygen Sensor Bung M18x1.5 Copper https://www.amazon.com/dp/B07G81XZZT/ref=cm_sw_r_cp_api_i_yjUuDbNF6YSVJ

so you had this issue then? can you elaborate a little more on the issues you had?

08-13-2019 | 03:36 PM

LS1

Banned

Joined: Aug 2017

Posts: 54

Likes: 0

From: Osaka, Japan

There will always be moisture in a marine exhaust, the moisture/condensation will ultimately render the o2 sensor useless over time and you will have to replace them once in a while. Keep a spare with you. Or use an o2 bung as recommended by Baja above that will make it harder for the moisture to reach the o2 sensor.

08-13-2019 | 07:46 PM

Rookie

Registered

Joined: Jan 2003

Posts: 6,018

Likes: 1,521

From: Grand Rapids, MI

Are you running the NTK sensors? I was told that they work better in the marine environment.
These help also.
https://www.ebay.com/itm/INNOVATE-MO...gAAOSwhglTx8Y0

08-13-2019 | 09:09 PM

Cerberus66

Thread Starter

Registered

Joined: May 2018

Posts: 175

Likes: 50

No I’m not yet. I’m replacing with Bosch and will get a bing extension and see how that does first. I was told same thing by my tuner. They are 100 more per unit and last a little longer.

08-13-2019 | 10:47 PM

Trash

Registered

Joined: Jun 2011

Posts: 1,209

Likes: 141

Quote:

Originally Posted by Rookie

Are you running the NTK sensors? I was told that they work better in the marine environment.
These help also.
https://www.ebay.com/itm/INNOVATE-MO...gAAOSwhglTx8Y0

This is the piece I would recommend too. Made no difference in AFR readings either. I did back to back comparison.

08-14-2019 | 10:26 AM

Baja Rooster

Registered

Joined: Oct 2013

Posts: 2,888

Likes: 148

From: SF Bay Area

I never had any issues to begin with, but have always ran the Innovative bung extender from day one on my wideband.

When i put fuel injection on I got the 90° one that I listed as it’s pretty much the same but the bend allowed me to clock it so the sensor is way up away from the water. 50 or so hours so far and no issues.