 Subaru sensors to keep, which one are necessary? please help! |
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| tazz9924 |
 Jul 12 2016, 05:09 PM
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#1
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Senior Member  Group: Members Posts: 703 Joined: 31-May 15 From: Mooresville NC Member No.: 18,779 Region Association: None  |
Subaru gurus i call upon your knowledge, i need to know what sensors i need. For instance what do i do about the downstream o2 sensor since i dont have a cat or what is necessary to either run a vss? Anything like this is helpful as i want to make sure i have it tight before i go further. Thanks all!
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| jimkelly |
Jul 12 2016, 05:17 PM
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#2
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Delaware USA Group: Members Posts: 4,969 Joined: 5-August 04 From: Delaware, USA Member No.: 2,460 Region Association: MidAtlantic Region |
the bible i am using for my 1990 ej22.
you need to tell us if you are planning to use stock ecu, i'm assuming you are. http://www.shoptalkforums.com/viewtopic.php?t=136053 |
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| zipedadoo |
Jul 12 2016, 05:23 PM
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#3
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Member Group: Members Posts: 135 Joined: 23-January 14 From: Arizona Member No.: 16,921 Region Association: None |
Also depends on what year Subaru you're using.
On my 96 2.2... Down stream O2 sensor not needed. Will throw a code but won't affect how it runs. If you use the subaru transmission it will have the VSS unless it's a 1996 or older if it is or if you are using the porsche transmission then you will have to make one or buy a kit to install one on the CV axle. |
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| tazz9924 |
Jul 12 2016, 05:45 PM
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#4
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Senior Member Group: Members Posts: 703 Joined: 31-May 15 From: Mooresville NC Member No.: 18,779 Region Association: None |
im using stock ecu ej205 and Subaru trans
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| mepstein |
Jul 12 2016, 06:58 PM
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#5
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914-6 GT in waiting Group: Members Posts: 19,270 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region 
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On my eg33 (svx), I keep the O2 sensors.
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| tazz9924 |
Jul 12 2016, 08:59 PM
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#6
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Senior Member Group: Members Posts: 703 Joined: 31-May 15 From: Mooresville NC Member No.: 18,779 Region Association: None |
I assume u don't have a cat, does it weird it out at all
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| mepstein |
Jul 13 2016, 05:07 AM
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#7
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914-6 GT in waiting Group: Members Posts: 19,270 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region
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QUOTE(tazz9924 @ Jul 12 2016, 10:59 PM)  I assume u don't have a cat, does it weird it out at all I haven't ran the car yet but the tech that worked my ecu harness said I needed to keep the O2 sensors. He's done a lot of harnesses. I'll defer to his experience. Correct, no cat. |
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| rnellums |
Jul 13 2016, 05:38 AM
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#8
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Professional Enthusiast Group: Members Posts: 1,646 Joined: 26-November 09 From: Littleton, CO Member No.: 11,072 Region Association: Rocky Mountains |
The eg33 is a vintage that doesnt have a post cat sensor, my ez30 throws a code for not having the post cat sensor and a few others, but hasnt effected drivability. Safe bet is keep any sensor on the engine harness, VSS, and pre-cat o2 sensors. The ecu may also need to see a signal/short from the transmission/neutral safety switch.
Vss can double as speedometer signal using something like speedo healer to convert the pulses (I.e. to an electronic 911 speedometer) |
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| 76-914 |
Jul 13 2016, 09:38 AM
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#9
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Repeat Offender & Resident Subaru Antagonist Group: Members Posts: 13,500 Joined: 23-January 09 From: Temecula, CA Member No.: 9,964 Region Association: Southern California
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(IMG:style_emoticons/default/agree.gif) The rear CAT is used only for emission reports so not necessary in your case. The VSS should be re-connected to the ECU. It will run w/o it but it will stall momentarily every 6 min's when on the hi way. (IMG:style_emoticons/default/beerchug.gif)
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| tazz9924 |
Jul 13 2016, 10:14 AM
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#10
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Senior Member Group: Members Posts: 703 Joined: 31-May 15 From: Mooresville NC Member No.: 18,779 Region Association: None |
QUOTE(76-914 @ Jul 13 2016, 08:38 AM) (IMG:style_emoticons/default/agree.gif) The rear CAT is used only for emission reports so not necessary in your case. The VSS should be re-connected to the ECU. It will run w/o it but it will stall momentarily every 6 min's when on the hi way. (IMG:style_emoticons/default/beerchug.gif) that sounds like it sucks maybe u should get that checked out lol |
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