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Thread: o2 sensor issue
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04-05-2016, 10:54 PM #11LTx Guru
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If you already checked the pink wire volts and injector resistance, you have to complete the check by verifying the PCM ground is reaching each injector. If you clear the injector code, how fast does it come back?
You can do two checks on the stuck injector circuit. You could swap the sensors side-to-side as you mentioned, or disconnect the sensor. Have you tried either?SOLD - GONE TO A (VERY) GOOD HOME ! - 94 Formula A3+1: 381ci forged stroker - Callies Stealth, Oliver 5.85 billet rods, BME nitrous pistons / CNC LT4 heads / CC solid roller / TH400+GearVendors OD / 4.11 Strange 12-bolt / 300-shot N2O / Spohn Suspension / roll bar / MoTeC M48 Pro engine management system /a few other odds 'n ends.
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04-05-2016, 11:07 PM #12LTx Guru
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Bank 1 / driver side:
- signal wire (high) - purple/white - pin C20
- ground wire (low) - tan/white - pin C19
Bank 2 / passenger side:
- signal wire (high) - purple - pin C8
- ground wire (low) - tan - pin C7
Connector "C" is the grey/clear connector.SOLD - GONE TO A (VERY) GOOD HOME ! - 94 Formula A3+1: 381ci forged stroker - Callies Stealth, Oliver 5.85 billet rods, BME nitrous pistons / CNC LT4 heads / CC solid roller / TH400+GearVendors OD / 4.11 Strange 12-bolt / 300-shot N2O / Spohn Suspension / roll bar / MoTeC M48 Pro engine management system /a few other odds 'n ends.
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04-06-2016, 08:09 PM #13Lurker
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94' Z28 A4 black: turbo build in progress
94' Formula A4 red: 355, 11.5:1cr, LE 231/239 cam, comp promags, lpp's, Yank stall, 3:42's, Solomon tune
07' Impala A4: 180000 miles of stockness
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04-13-2016, 07:40 PM #14
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any updates on the issue I have a similar issue going on with my car
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04-16-2016, 04:54 PM #15Lurker
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Not yet. Haven't really had time to work on it. Had some family stuff going on lately. Hope to mess with it next weekend..
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04-23-2016, 02:34 PM #16Lurker
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Well I checked the wires from the pcm down... checked continuity and volts.. everything is checking out. It starting to look like either something mechanical or a doa o2 sensor... it's just very weird that I would have the same issue with 2 sensors.... I am going to look into that injector fault again. I'm just not real sure I'm going to find anything.
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