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Old 10-13-2013, 03:28 PM   #1
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Default 14point7 Spartan Lambda Controller issue

I've had this wideband for about 5 months and it worked great. Recently I fried my gauge while i was rewiring it. Since my car was already on a solid tune I figured no biggie, I'll just get another gauge in a week or so. Well I didnt get around to it yet. Fast forward to last night, I have my turbo and manifold off to do a little work on the manifold (It was leaking) and I just let the downpipe hang there, which may have put tension on the WB wiring.

I put the the manifold and turbo back in, and I went to work on the other side, I was installing some Ford Mustang GT500 injectors (yea i know not all ev14s are the same..) and once I got done, hooked up my laptop to Megasquirt, and changed the req_fuel, car started right up. I noticed the afr was stuck at 14.78. I revved it up, stayed the same. Put a voltmeter on the wire, 2.38v was the reading I got I believe. Staying constant. Is my sensor fried? Or break in the wire? I was thinking if it is break in the wire (from DP just dangling there), then it wouldn't read anything at all. How do I go about testing this?
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Old 10-13-2013, 04:08 PM   #2
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Wasnt the spartan controller soldered on to the sensor or did they finally make the controller plug in?
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Old 10-13-2013, 04:12 PM   #3
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The controller is a tiny box away from the sensor, looks sorta sealed, might be able to just cut and splice a new sensor, or just get a new wideband altogether if this one is done

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Old 10-13-2013, 04:19 PM   #4
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Yeah from memory the guts were soldered on to the sensor. Thats the main drawback to spartan. Thats why i decided against it because i dont feel like replacing the entire thing if i foul up the sensor.

At this point i'd triple check the entire thing is wired properly and up to temp.
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Old 10-13-2013, 04:31 PM   #5
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When I pull it, if I power it on, how hot/warm should it get? Burn my fingers hot?
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Old 10-13-2013, 05:04 PM   #6
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No clue, i've never held my sensor while having it powered on lol. It takes about 15-20 seconds for it to get up to temp.

Do a full sweep though. Take a towel damp in gasoline and cover the sensor. it will read full rich then remove the towel and the sensor will go full lean. If your sensor wire is reading the same thing then something is fucked up. A new sensor is like 55 bucks so you do the math if its worth a new sensor or just replacing the whole thing though.
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Old 10-13-2013, 07:42 PM   #7
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Well I just went to Advance Auto Parts and got a sensor for $40 (with tax, gotta love their online coupons) and it behaves the same way. I guess the controller itself took a dump as I ruled out the wiring by probing voltage right on its tiny little board after I opened up the sealed box. Can I just get a gauge with an integrated controller to run this Bosch 17014? Suggestions for a reasonably priced one?
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Old 10-18-2013, 12:22 AM   #8
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Innovate MTX-L would be my recommendation... Uses standard Bosch O2 sensors, so easy to fix if there is a sensor issue.
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