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Subject: "horribal MPG o2 sensor?" Previous topic | Next topic
talon749Apr-23-06 04:27 PM
Member since Jul 13th 2005
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#98126, "horribal MPG o2 sensor?"




          

Is there a dead give away my o2 sensor is bad? I have a CEl, and getting like 15mpg combined with my new header and cat? I still have the stock o2 sensor in the downpipe

-Keith

'92 BMW 325i - 3.91 LSD....Cold air intake....M52 headers.....Track pipe....Remus back....Fan Delete....UUC short throw...M3 Clutch Flywheel & Drive Shaft...Tien Coil overs

I <3 the twisties

  
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Replies to this topic
RE: horribal MPG o2 sensor?, jsupetran, Apr-23-06 05:08 PM, #1
RE: horribal MPG o2 sensor?, 96eclipse2nr, Apr-23-06 05:14 PM, #2
      RE: horribal MPG o2 sensor?, AdministratorStar Turbo Talon, Apr-23-06 05:25 PM, #3
           RE: horribal MPG o2 sensor?, Blizare, Apr-23-06 07:40 PM, #4
                RE: horribal MPG o2 sensor?, jsupetran, Apr-23-06 08:17 PM, #5
RE: horribal MPG o2 sensor?, GSGoinFast, Apr-24-06 03:11 AM, #6
RE: horribal MPG o2 sensor?, talon749, Apr-24-06 04:08 PM, #7
      RE: horribal MPG o2 sensor?, 96eclipse2nr, Apr-25-06 09:30 AM, #8
           RE: horribal MPG o2 sensor?, HadesOmega, Apr-25-06 10:47 PM, #9
                RE: horribal MPG o2 sensor?, talon749, Apr-26-06 01:10 AM, #10
                     RE: horribal MPG o2 sensor?, GSGoinFast, Apr-26-06 03:29 AM, #11
                          RE: horribal MPG o2 sensor?, talon749, Apr-27-06 05:02 AM, #12

jsupetranApr-23-06 05:08 PM
Member since May 04th 2002
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#98130, "RE: horribal MPG o2 sensor?"
In response to Reply # 0



          

Could be. When I got 13mpg, I switched the o2 sensor out from 02sensors.com and got my old milege. Maybe even better.

New Car:
2004 350z base, Nismo CAI, pioneer avic-n1 (dvd, cd, navi)



Old Car:
1998 GS with hrc stage 2, HID 6000k conversion kit, AEM UEGO wideband, sfmu, ml, prokits, Greddy warning gauges: egt, boost gauge, and oil pressure, apexi tt, haydans tranny cooler, costum dp, groundwires, dynotune fp gauge. gst muff, turbo spoiler
Boostin since Aug 03.

nothing like driving with the windows down and the music low: i love hearing the turbo spool, swwwhhhttt!!!!


  
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96eclipse2nrApr-23-06 05:14 PM
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#98131, "RE: horribal MPG o2 sensor?"
In response to Reply # 1

          

verry possible, esp if its the original. i changed mine a while back and i get phenominal gas mileage. also a minor tune up wouldent help if its been a while.

-----------------------------------------
2011 Nissan Xterra Pro-4x

2007 Kawasaki Ninja 650R

1996 Mitsubishi Eclipse RS-NX 75 shot, AEM CAI, P&P t/b and intake mani-SOLD

1964 Buick Electra 225-all original, all power options, 325hp, 445ft/lbs tq

  
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AdministratorStar Turbo TalonApr-23-06 05:25 PM
Member since Oct 21st 2003
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#98133, "RE: horribal MPG o2 sensor?"
In response to Reply # 2



          

O2 sensors can easily go bad and not throw a CEL. This is very common. Bad mileage is a sure sign yours is getting old and inaccurate. The only way to know for sure if its bad is to install a new one in the pipe and run the two side by side to compare the readings. This is a nice feature if you are running a wideband.

Basically what i am telling you is to just buy a new one and go with a tune up if you havent done that in the past 8 months.

Terry

  
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BlizareApr-23-06 07:40 PM
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#98134, "RE: horribal MPG o2 sensor?"
In response to Reply # 3



          

I just changed mine the other day.

Hmmmm smooth idle.


I eat emo kids for breakfast

1995 Eagle Talon (SOLD)
72' SuperBeetle
72' Standard Beetle
56' Deluxe Beetle

  
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jsupetranApr-23-06 08:17 PM
Member since May 04th 2002
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#98135, "RE: horribal MPG o2 sensor?"
In response to Reply # 4



          

I bought mine at oxygensensors.com. Very quick shipping and great price too! I bought the OE Walker oxygen sensor.

New Car:
2004 350z base, Nismo CAI, pioneer avic-n1 (dvd, cd, navi)



Old Car:
1998 GS with hrc stage 2, HID 6000k conversion kit, AEM UEGO wideband, sfmu, ml, prokits, Greddy warning gauges: egt, boost gauge, and oil pressure, apexi tt, haydans tranny cooler, costum dp, groundwires, dynotune fp gauge. gst muff, turbo spoiler
Boostin since Aug 03.

nothing like driving with the windows down and the music low: i love hearing the turbo spool, swwwhhhttt!!!!


  
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GSGoinFastApr-24-06 03:11 AM
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#98137, "RE: horribal MPG o2 sensor?"
In response to Reply # 0



          

Originally posted by talon749
Is there a dead give away my o2 sensor is bad? I have a CEl, and getting like 15mpg combined with my new header and cat? I still have the stock o2 sensor in the downpipe


I think the dead give away would be if the CEL is for the front 02 sensor... Go to autozone and get it checked.

-Chris
1999 Eclipse T-GS


2.4 Project is Officially underway emoji

  
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talon749Apr-24-06 04:08 PM
Member since Jul 13th 2005
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#98153, "RE: horribal MPG o2 sensor?"
In response to Reply # 6



          

Hey guys I went to Autozone today and had them scan it. Yea it was the front o2 sensor I think im stuck with buying bosch for right now its only like $45 and its a direct replacment, no splicing (reason being I have to leave wednesday night for a trip to chicago) Thanks for the help!

-Keith

'92 BMW 325i - 3.91 LSD....Cold air intake....M52 headers.....Track pipe....Remus back....Fan Delete....UUC short throw...M3 Clutch Flywheel & Drive Shaft...Tien Coil overs

I <3 the twisties

  
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96eclipse2nrApr-25-06 09:30 AM
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#98177, "RE: horribal MPG o2 sensor?"
In response to Reply # 7

          

too bad you gotta have it so soon..youll be buyin another sensor in 3-6 months with that bosch from what iv heard SEVERAL times on this board. the one from oxygensensors.com is only slightly more expensive (56 total for me) and iv never heard of anyone having a problem with theirs..ever.

-----------------------------------------
2011 Nissan Xterra Pro-4x

2007 Kawasaki Ninja 650R

1996 Mitsubishi Eclipse RS-NX 75 shot, AEM CAI, P&P t/b and intake mani-SOLD

1964 Buick Electra 225-all original, all power options, 325hp, 445ft/lbs tq

  
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HadesOmegaApr-25-06 10:47 PM
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#98200, "RE: horribal MPG o2 sensor?"
In response to Reply # 8

          

I had a bosch on for a while and I have a nippon denso now I didn't really notice a difference with any of them they both do the job. I was burning oil and I was still getting like 25+ MPG


http://www.hadesomega.info -car specz and movies 95 Eclipse RS | 76' 280Z | 89' MR2 | 99 Neon | 91 Zephyr
Who sez FF can't drift?

  
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talon749Apr-26-06 01:10 AM
Member since Jul 13th 2005
421 posts, 		Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#98202, "RE: horribal MPG o2 sensor?"
In response to Reply # 9



          

hey guys I threw the bosch sensor in there last night and its running a lot better, but I still have a CEL??

-Keith

'92 BMW 325i - 3.91 LSD....Cold air intake....M52 headers.....Track pipe....Remus back....Fan Delete....UUC short throw...M3 Clutch Flywheel & Drive Shaft...Tien Coil overs

I <3 the twisties

  
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GSGoinFastApr-26-06 03:29 AM
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#98204, "RE: horribal MPG o2 sensor?"
In response to Reply # 10
 Apr-26-06 03:30 AM by GSGoinFast



          

Originally posted by talon749
hey guys I threw the bosch sensor in there last night and its running a lot better, but I still have a CEL??


Unhook the negative terminal on the battery and leave it unhooked for a good 5 minutes or so. Then reconnect it and the code should be gone.

-Chris
1999 Eclipse T-GS


2.4 Project is Officially underway emoji

  
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talon749Apr-27-06 05:02 AM
Member since Jul 13th 2005
421 posts, 		Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#98231, "RE: horribal MPG o2 sensor?"
In response to Reply # 11



          

thanks man I hooked it back up and it runs great with no CEL nice performance gain too I was able to beat a prelude si

-Keith

'92 BMW 325i - 3.91 LSD....Cold air intake....M52 headers.....Track pipe....Remus back....Fan Delete....UUC short throw...M3 Clutch Flywheel & Drive Shaft...Tien Coil overs

I <3 the twisties

  
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