O2 sensor brand??

pajeepman · Jun 26, 2016

I have a 2003 1500 5.9. Posting here because 3rd gen engine forum area is 99% hemi and 4.7 talk.

I am fixing plenum soon and want to replace 02 sensor(s). I have read just replace pre cat some people say to replace all of them though. I assume I only have 2, 1 pre and 1 post cat, I need to confirm that before I order . RockAuto list upstream left and right for me application so I'm not sure

I know some vehicles prefer certain brands, are 5.9 rams like that also?

Thanks.

Sent from my SM-J320P using Tapatalk

joepizuro · Jun 26, 2016

If you don't have a check engline light for your o2 sensors and still want to change them. Just change the front 2 aka pre cat aka upstream. Denso makes decent sensors.

pajeepman · Jun 27, 2016

Only cel/code is for cylinder 8 misfire. Using oil like crazy= plenum. My mpg is in the 10 range according to computer and my math. It really should be higher(I hope so anyway). I have looked and looked and have had trouble fining what a o2 senor graph should look like on my code reader that shows graphs.

Sent from my SM-J320P using Tapatalk

joepizuro · Jun 27, 2016

How are spark plugs/wires, and air filter doing?

dapepper9 · Jun 27, 2016

NTK are generally what these trucks like. Usually hate Bosch. I say generally and usually because you'll get the occasional unicorn

pajeepman · Jun 27, 2016

joepizuro said:
How are spark plugs/wires, and air filter doing?

Air filter looks good, i have a k&n deop in I have to drop in. I have new cap/rotor/plugs/wires to replace when the plenum gets done.

Sent from my SM-J320P using Tapatalk

joepizuro · Jun 27, 2016

Well I'd do all that first and see if your gas mileage comes back. Then if you still have bad mileage and want to replace the upstream sensor(s). Here's a link to get NTK/NGK o2 sensors. As pepper said, these trucks hate Bosch
PartCat

Yeret · Jun 29, 2016

The plenum repair is good for many reasons, but don't expect any miracles to fuel economy. My fuel mileage pre and post plenum repair is exactly the same and I also had new cap/rotor/wires/plugs at the same time. The Magnum engines are pigs no matter what you do to them, LOL.

Also, I used NTK when I replaced my O2 sensors. No problems here.

pajeepman · Jun 29, 2016

I am not expecting MPG miracle but hopefully wth that, a tune up, and o2 sensors it will go a couple miles per gallon..

Sent from my SM-J320P using Tapatalk

dodge dude94 · Jun 29, 2016

Denso and NTK are the two I see the most consistent luck with. Bosch is hit or miss depending on vehicle.

O2 sensor brand??

pajeepman

Senior Member

joepizuro

Senior Member

pajeepman

Senior Member

joepizuro

Senior Member

dapepper9

Senior Member

pajeepman

Senior Member

joepizuro

Senior Member

Yeret

The Village Drunk

pajeepman

Senior Member

dodge dude94

Millennial Boomer

Similar threads

Latest posts

Members online

Forum statistics

Share this page