Jul 8, 2012 · Anyone know the difference between the upstream and downstream o2 sensors? My truck sounds like a box of rocks under load! I have the lean condition...

Mar 10, 2018 · Start by cleaning your Maf with some electronics cleaner, then scan your upstreem 02 sensors and look for a difference between the two in positive or negative fuel trims. If you get an …

Dec 27, 2011 · The downstream o2 sensors are slightly cheaper and comes with a longer harness for custom o2 sensor placements. This works great when you're trying to extend the upstream sensor on …

Aug 3, 2014 · Obviously i don't need the downstream ones, but of the three remaining, which do i need for each side? Thanks Ok, the 9457 is for the cats, either side. This is a downstream sensor. The …

Mar 8, 2012 · From the Denso website, it appears there are two different OEM O2 sensors, one for the upstream (234-4624) and one for the downstream (234-4603). The universal sensor, however, is the …

May 28, 2015 · Upstream vs downstream O2 sensors Discussion in ' 1st Gen. Tacomas (1995-2004) ' started by jaunty, Aug 27, 2016.

Feb 19, 2021 · 98 toyota tacoma 2.7l All original Ok I got a question I got a 98 toyota tacoma 2.7l and my 02 sensor is needing replaced but I went to order them and what is the difference between an …

Jan 11, 2011 · I am trying to understand why the part numbers for OEM Downstream O2 sensors are different from Toyota, 89465-04340 (left) and 89465-04350 (right). They are both O2 sensors and …

Dec 16, 2019 · My 2002 Tahoe is the same, all 4 sensors are the same part #. Yeah, I panicked after I saw your post listing different upstream/downstream as I replaced all 4 of mine (2004 Flex) with a …

Nov 17, 2019 · 2006-2007 O2 (Air/Fuel) Oxygen Upstream Sensor Discussion in ' 2nd Gen. Tacomas (2005-2015) ' started by rocker1500, Nov 17, 2019.