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Old 05-09-2009, 12:18 PM   #1 (permalink)
 
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Default Obd0 to obd1 o2 sensor question

I've done the obd0-1 conversion and I'm having issues with o2 sensor wiring. I have this harness NEW ECU Jumper Conversion harness- OBD0 Pre OBD to OBD1:eBay Motors (item 380122389132 end time May-12-09 14:08:23 PDT)
I'm using a denso sensor. 2 blk,1 wht and 1 grn wire. Also, I'm using the obd1 plug for it. It has the yw/blk, grn/wht, wht/wht and org/blk wires.

This is what I've hooked up. org/blk to the wht existing o2 sensor wire, grn/wht to the blk ground wire in jumper harness labeled (SCS,VRM,O2 GRN WIRE). wht to wht in jumper labeled pin D14-(o2 sensor signal/ 02 white wire). finally, the ylw/blk to the blue wire in jumper labeled pin A6-(02 sensor heater control / o2 blk wire.

It's running but my AF gauge is showing lean and I'm throwing a cel. Before I switched sensors, it was running rich with a cel. My head is going to explode. help me please! haha
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Old 05-09-2009, 12:23 PM   #2 (permalink)
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have u tried another o2? and is the o2 grounded?
i hate ebay jumpers to confusing thats why mine are simple lol
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Old 05-09-2009, 12:27 PM   #3 (permalink)
 
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Haven't tried another o2. I know this one is good. The grn/wht is going to the ground in the new jumper. Should I try grounding it in the bay? If so, where is a good location?
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Old 05-09-2009, 12:30 PM   #4 (permalink)
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thermostat housing like a normal 4 wire
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Old 05-09-2009, 12:35 PM   #5 (permalink)
 
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K, I'll do that. What about the old sensor wire? There is a power wire in the new jumper. Should I run the ylw/blk to it? It's labeled (power-IAB,o2 blk).
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Old 05-09-2009, 12:39 PM   #6 (permalink)
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can u get me a pic of the harness u have the jumper from egay


and yes ylw/blk is power
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Last edited by sleepingciv; 05-09-2009 at 12:41 PM.
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Old 05-09-2009, 01:04 PM   #7 (permalink)
 
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Old 05-09-2009, 01:06 PM   #8 (permalink)
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nice hot glue lol and there are some tight wires lol anyway


this is how it should be i would try and run a ground straight from the o2 to the thermo housing
and dont use barrel connectors man use solder. barrels and come loose and brake
Orange/Black - Heater (ECU A6)
Grey(WHITE) - Signal (ECU D14)
Yellow/Black - 12 Volt
Green/White - Ground
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Old 05-09-2009, 01:12 PM   #9 (permalink)
 
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Cool man, The connectors are just temporary, just check out my dizzy harness in the DIY section. That's how I roll man. Haha I'll get to it and let you know how it goes. Thanks!
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Old 05-09-2009, 01:13 PM   #10 (permalink)
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no prob man
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Old 05-09-2009, 02:37 PM   #11 (permalink)
 
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Do I just do away with the old o2 wire? They have it jumped to B14. Does that make sense?
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Old 05-09-2009, 06:46 PM   #12 (permalink)
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I had somewhat off the same issue but I had the xenocron convesion harness and an unknown O2 sensor. Dont know if it will help at all but here is the link to my thread. https://d-series.org/forums/engine-ma...on-wiring.html It has some good info in it. Good luck
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Old 05-10-2009, 07:04 AM   #13 (permalink)
 
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Quote:
Originally Posted by z6rex View Post
Do I just do away with the old o2 wire? They have it jumped to B14. Does that make sense?
Anyone?
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Old 05-10-2009, 07:10 AM   #14 (permalink)
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If they jumper the wire in the harness it sounds like the new wire for it is in the harness that goes to the engine bay.
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Old 05-10-2009, 07:16 AM   #15 (permalink)
 
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That's kinda what i figured. Do you know how to hook up the service check signal? Once it's hooked up, how do I check cel's now?
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Old 05-10-2009, 07:22 AM   #16 (permalink)
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Im not sure what all done to that harness.
But on plug D pin 4.
What i do for mine is use a toggle switch and then run a ground somewhere.
Thats what i dont like ebay jumpers there not clear at all

So a wire from d4 to a toggle then a wire from the toggle to a bolt somewhere for a ground
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Old 05-10-2009, 07:30 AM   #17 (permalink)
 
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I'm assuming it makes my check engine light flash to check cel's?
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Old 05-10-2009, 07:34 AM   #18 (permalink)
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ya it will flash the cel in your cluster
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Old 05-10-2009, 08:11 AM   #19 (permalink)
 
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Awesome. Thanks again man, you've been a BIG help. I'd rep you again but it won't let me!
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Old 05-10-2009, 11:28 AM   #20 (permalink)
 
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Now that I solved that issue, which wire do I hook my A/F gauge too?
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