TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

Flat O2 signal...

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Old Jul 17, 2014 | 04:27 PM
  #1  
WagonmasterRuss's Avatar
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From: S.W. Washington
Car: 1993 Caprice Classic "Woodie"
Engine: 350 TBI W/EBL Flash
Transmission: 4L60 S10 converter
Axle/Gears: 8.5, Torsen T2, 3.73s
Flat O2 signal...

Hi guys,
This a '93 L05, in my sig line, running EBL flash and a heated O2 sensor
I just installed a new 46mm throttle body, made some changes to the .BIN and started her up. Everything was OK, but then my O2 sensor signal went flat. It had been fine, all sensors look good, the computer is in closed loop. It will spike if I open the throttle but not cycle like normal.

I'm thinking it's gone bad, what do you think?

Thanks
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Old Jul 25, 2014 | 01:55 PM
  #2  
Schurkey's Avatar
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Re: Flat O2 signal...

Low crosscounts = lazy, defective sensor.
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