Difference between upstream and downstream O2 Sensor
I need to replace my upstream sensor and would like to use Denso on my '96 Accord DX. Is there a real difference between the two below? One says it is upstream and the other says it is downstream but they seem identical and the one that is downstream is cheaper. Is it just the wire lenght?
"Downsteam"
"Upstream"
"Downsteam"
"Upstream"
Most times that is correct. Any four wire will replace any four wire. The difference is in the computational data. The upstreams is basicly a baseline (set between two points) and the downstream is an efficiency report on the upstream converter system. Very basicly discribed mind you.
So, what do you recommend? Since I have to replace the upstream one, just pay the extra ten bucks to make sure it will work?
How hard is splcing wiring on these things because the below one requires that and only costs $30.
Thanks for you fast help.
How hard is splcing wiring on these things because the below one requires that and only costs $30.
Thanks for you fast help.
The plugs should be the same. You could always extend, solder, and use the existing plug if you really had to. Otherwise an oxygen sensor is an oxygen sensor, just MAKE SURE you stick with a Nippon Denso one. Upstream is pre-cat, downstream is post-cat.
Nice!
Giong with the one below. Hope it goes well. Need it for emission test in Cali.
Giong with the one below. Hope it goes well. Need it for emission test in Cali.
Trending Topics
Nice!
Giong with the one below. Hope it goes well. Need it for emission test in Cali.
Denso 234-4601 Oxygen Sensor : Amazon.com : Automotive
Giong with the one below. Hope it goes well. Need it for emission test in Cali.
Denso 234-4601 Oxygen Sensor : Amazon.com : Automotive
Whoa whoa whoa whoa... easy there Mr Minnesota. The only snow blower a typical Californian may ever have to deal with is a hooker greedy with the cocaine
Y'all can keep your 14° winters and hot days of 74° summers.


tekram if the O2 sensors don't come with shrink wrap, make sure to pick some up and use it before splicing on to make sure it is weather tight.
Y'all can keep your 14° winters and hot days of 74° summers. tekram if the O2 sensors don't come with shrink wrap, make sure to pick some up and use it before splicing on to make sure it is weather tight.
Yall can keep your 110° summers and two seasons, F#@king Hot and F#@king wet. Those dumb communist car laws are just another bother!
So, what do you recommend? Since I have to replace the upstream one, just pay the extra ten bucks to make sure it will work?
How hard is splcing wiring on these things because the below one requires that and only costs $30.
Amazon.com: Denso 234-4209 Oxygen Sensor: Automotive
Thanks for you fast help.
How hard is splcing wiring on these things because the below one requires that and only costs $30.
Amazon.com: Denso 234-4209 Oxygen Sensor: Automotive
Thanks for you fast help.
Thread
Thread Starter
Forum
Replies
Last Post





