Mar 12, 2003 · If the sensor passes these checks, it is probably good. If this does not produce the required results, check the wiring for continuity. If that checks out OK, remove the sensor from the vehicle and run a bench test on it. O2 Sensor Bench Test Remove the sensor from the vehicle and attach a DMM to the Grey and Black leads.

Dec 21, 2009 · The Front O2's sensor swings from about .250V to .900V, adjusting from rich to lean detection. The post-cat sensor should have barely any voltage swing at all, if it does, it means the catalytic converter is defective and not cleaning up the exhaust.

Apr 14, 2003 · The O2 sensor is necessary for the efficient operation of the engine. Why did you not reinstall it? My 4runner wont start if my sensor is unplugged. I dont wanna get too in depth, but all FI engines have 02 sensors if not more than one.

Mar 15, 2006 · If you use a single wire O2 sensor, then install it on the side of the motor as it needs to reach a high temperature to operate as it should. Many shorty headers come with the bung in the driverside header for the O2 sensor. Keep this in mind, the TBI system uses two injectors, one for each side of the motor.

Jul 10, 2007 · After finding out I needed a wideband o2 sensor to achieve a more precise tune, I set out to find out what wideband o2 sensor to get. Finally I found that narrow band (stock) o2 sensors output a 0-1 volt range. Wideband o2 sensors output a 0-5 volt signal. In other words, a wideband would be auxiliary and only for tuning. (with a stock ecu)

Oct 12, 2008 · 1. If its not below 40 degrees the cold start injector not working (Delivering fuel) is not your problem. 2. I assume this is a manual Trans: Jump in do not press the clutch in or press the clutch over ride switch. turn the ignition to "Crank" ; ans as posted above count to 5 (No; the starter will not engage but the fuel pump will run as long …

Sep 29, 2011 · I decided to check what kind of voltage my 02 sensor was putting out. Hooked up the multimeter to the "Ox" test port on the diagnostic check connector by the fuse box, and got nothing, 0v. So off came the pass kick panel, and I checked it directly at the ECU (Connector 2, Pin 13, black wire). Same thing, no signal from the 02 sensor.

Aug 22, 2019 · Before the 2nd failed smog test I removed the semi new Denso o2 sensor and spacer and replaced with a new Bosch that has a shorter snout, even through I try to stick to Denso for sensors and plugs. My problem with moving the o2 sensor is that it'd require me to weld another bung and probably have to go with a 4 wire heated sensor - technically ...

Mar 4, 2002 · How do you test an o2 sensor? Jump to Latest Follow 904 views 6 replies 7 participants last post by Blue82 Mar 15, 2002

Jan 27, 2009 · i just got a wideband PLX sensor to use in conjuction with megasquirt on the supercharged 1.6 i've been workng on for my zuk. that's a $200 sensor that you monitor on a laptop screen when tuning the EFI. with that in mind, this gauge kit is less than twenty bucks and works with the stock samurai O2 sensor.