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Author Topic: oxegen sensor  (Read 1600 times)

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Offline jake

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oxegen sensor
« on: January 11, 2008, 03:15:04 PM »




  i gota ford efi 1998 v-8 7.5 liter on my motorhome and i want to install a hho electrolyzer to assist with gas mileage?
  can i just bypass the o2 sensor with
                                                    1. a resistor or should i use

                                                    2. a wire to bypass 
                                                    3. or just leave an open circuit?
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Offline GZ

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Re: oxegen sensor
« Reply #1 on: January 11, 2008, 06:47:37 PM »
Quote from: jake on January 11, 2008, 03:15:04 PM




  i gota ford efi 1998 v-8 7.5 liter on my motorhome and i want to install a hho electrolyzer to assist with gas mileage?
  can i just bypass the o2 sensor with
                                                    1. a resistor or should i use

                                                    2. a wire to bypass 
                                                    3. or just leave an open circuit?


I use simple hydrogen gen built by me on my 2002 Durango for 2 years and I never touched a sensor and never herd that any sensor should be touched.
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Offline Smartbreathanalyzer

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Reply:
« Reply #2 on: November 29, 2009, 08:01:41 AM »
Hey, thank you so much for this information. I was planning to do the same thing on my car. But now i think i will put it on hold.

http://www.smartbreathalyzer.com
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Offline Robert58

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Re:oxygen sensor extension?
« Reply #3 on: January 19, 2010, 11:31:20 PM »
Incase anyone else has this problem i got an extension from Cobra for $35.00
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« Last Edit: January 24, 2010, 11:23:29 PM by Robert58 »
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Offline Brandon67

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Re: oxegen sensor
« Reply #4 on: January 27, 2010, 10:23:54 PM »
I have a 1997 Jeep GC Ltd 4WD 4.0L that has two oxygen sensors, one upstream and one downstream. It's setting a code 51 that my Haynes manual explains in two related, but significantly (I think) different ways.

Explanation 1: Oxygen sensor signal input indicates lean fuel/air ratio condition during engine operation.
Explanation 2: A lean air/fuel mixture has been indicated by an abnormally rich correction factor.

The first seems to point to a faulty O2 sensor, but which one, the upstream or the downstream sensor? Clue: engine runs rich in open-loop mode (engine cold). Does one of the O2 sensors send a signal to the ECM when the engine is cold? If so, which one? First guess would be the upstream sensor.

The second explanation may point to a faulty ECM that is over-correcting based on one sensor input or other, as well as a faulty O2 sensor. However, I replaced the ECM about a year ago with a Chrysler ECM, so that's not likely.

Bottom line is, I don't have a lot of $$ to spend on replacing parts that may not be faulty just to see if it works, yet I have to drive my Jeep ~ 50 mi/day for work. I haven't bene able to find any explanation about the operation of the upstream and downstream O2 sensors in open- or closed-loop modes.

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« Last Edit: January 31, 2010, 11:01:13 PM by Brandon67 »
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Offline neetusharma

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Re: oxegen sensor
« Reply #5 on: March 03, 2010, 05:13:48 AM »
Well I always go for the branded ones and never wink on the quality part of the things I use in my cars. I would always prefer first of all consulting my car company what they would advise about this. My decision would be made on the combined details from a good mechanic (unrelated to my car company). This enables me to have a good unbiased information.
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