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Thread: Weird PLX wideband gauge issues.

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2009-11-08 16:58:42
Weird PLX wideband gauge issues.
i had my plx wideband for a few months now and it was installed right, ran perfectly up until like 3 days ago, i went to work and everything was fine, i got off at 4:30 in the morning and it was cold and i started up the car, and the gauge was just reading lean, i got on the highway and figured that the o2 just needed to heat up. nope still was reading lean.

i checked all the connections, cleaned the o2 connections, everything is fine.

the weird thing is like when i start the car it will read fine for a minute or 2 then i gradually goes to lean like 13.5 13.4 13.5 13.6 13.7 you get the idea all the way till it reads lean, which i dont get.

i read if the o2 is bad it will just read 14.7 or whatever, anyone ever have this happen?
2009-11-09 00:33:17
YouTube - O2 Sensor Test - How to check to see if your aftermarket O2 sensor is bad

my sensor sort of acts like that, but it doesnt act like that all the time, i would tihnk if the sensor is bad it would always act like that and not some of the times, like today i got in the car started it and the snesor worked great for like 30 mins before shutting it down, it didnt miss a beat and worked perfect. i donno
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