Mar 12, 2003 · Oxygen sensor input voltage maintained above the normal operating range. My first thought is the O2 sensor is bad but I just replaced it four months ago with a new Bosch unit. Before I …

Oct 6, 2008 · Front O2 sensor heater open. You can check the heater for continuity between pins 3 & 4 on the connector. It should be about 5 ohms.

Dec 21, 2009 · They do a great job of teaching how to test 1-wire, 2 & 3 wire. But something just isn't right about how that translates to a 4-wire setup. Like I said, they have ~5 volts running across what I …

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 …

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 …

Oct 12, 2008 · The denso o2 sensor is a good part but a bad o2 sensor is not going to give you a long crank time the o2 sensor has nothing to do with fuel delivery on start up.

Mar 12, 2006 · ANY O2 sensor that will generate 0.9 volts or more when heated, show 0.1 volts or less within one second of flame removal, AND pass the two minute heat test is good regardless of age. …

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 …

Nov 4, 2021 · 2005 - Bank 1 O2 Sensor Wiring issue? - Updated! ('03-'05) Jump to Latest 11K views 5 replies 3 participants last post by creme Nov 5, 2021

Aug 8, 2015 · The front sensor readings are fairly steady hovering around 1.5 v. ranging slowly from about 1 to 1.8 v, but did not vary rapidly. I had expected rapid variation in the 0.2-1 v range. Does …