Bosch Oxygen Sensors - The Truth

[contraption22]

Hi Guys,

I am still trying to track down an issue with my Grand Cherokee and the only thing I have left to do is replace the 02 sensor.

The one that is in there is a Bosch, probably less than 10k miles old.

I have done some reading in the ancient archives in here and have found many threads where it is mentioned that Bosch 02 sensors are crappy. But I could not find one instance where a Bosch 02 sensor was removed and replaced with one of another brand and it solved an issue.

If anybody has first hand experience attesting to this, I'd like to read it.

Thanks,

Mike

[Pat]

I've been eating through Bosch O2 sensors with a very high frequency in the cars I've run race fuel through. Prior to being locked with Bosch (I found a steal of a deal on bunch of them a while back at a local store..I'm rapidly eating through my little stock of them), I didn't have that issue. I have replaced failing Bosch's with new Bosch's and issues have gone away...until the newer one fails.

[4 l-bodies]

Mike I personally like the NTK myself. Better luck with them in stock and running low lead race fuels. Summit had some really good prices on the 1,3,4 wire o2's for our vehicles.
Todd

[tryingbe]

All three of my wideband uses BOSCH sensor.

[iTurbo]

I have had good results using the NTK brand as well. That is what comes in the Mopar box when you buy them from the dealership anyway. I get them from www.sparkplugs.com for about $47 each. I have liked them enough I never bother with the Bosch sensors.

[A.J.]

I've had Bosch O2 sensors go bad in my Chryslers and fixed them by replacing them with a Chrysler/NTK. I won't use anything else unless I'm in a pinch. My Innovate LC1 wideband uses Bosch O2 sensors and I'm on my 3rd Bosch WB O2 sensor in 5 years. If anybody has a part number for another WB O2 sensor I can use with the LC1 let me know because I hate the Bosch sensors.

[contraption22]

Thanks all. Has anybody had a Bosch replacement 02 sensor fail prematurely or not perform correctly out of the box under normal conditions?

[DOHCRT]

Talk to Neil, when we did the T3 Neon, he wasted 2 engines because of crappy new Bosch 02 sensors, incorrect lean feedback caused rich fueling and subsequent cylinder washing and rings not seating. Only factory Mopar boxed O2 sensors for this guy.

[contraption22]

Talk to Neil, when we did the T3 Neon, he wasted 2 engines because of crappy new Bosch 02 sensors, incorrect lean feedback caused rich fueling and subsequent cylinder washing and rings not seating. Only factory Mopar boxed O2 sensors for this guy.

That's what I am experiencing. I purchased an NTK sensor, I might as well throw it in.

[135sohc]

NTK or Denso only for me. No proof that would hold in the court but just far too much suspicion that they were defective from the box.

[supercrackerbox]

I've run Bosch and NTK and haven't had any issues to speak of. I'm fairly sure the one in the Daytona right now is an NTK. The sensors that have failed on me the most? Mopar.

[contraption22]

I've run Bosch and NTK and haven't had any issues to speak of. I'm fairly sure the one in the Daytona right now is an NTK. The sensors that have failed on me the most? Mopar.

Mopar sensors are sourced from NTK.

So it's a crapshoot no matter what I guess.

[turbovanman²]

My 2 cents as a tech and shop owner, I use Denso, Bosch and NTK in all my customers cars and have no issues EXCEPT using Bosch in our turbo Mopars. Why? No idea but my 98 Jimmy has run Bosch now for 8 years and still ok with 150,000 km's on them. I would have preferred NTK but I was in a pinch and they only had Bosch in stock. I do smog testing too and again, except for our turbo Mopars, no issues with Bosch.

I've had Bosch O2 sensors go bad in my Chryslers and fixed them by replacing them with a Chrysler/NTK. I won't use anything else unless I'm in a pinch. My Innovate LC1 wideband uses Bosch O2 sensors and I'm on my 3rd Bosch WB O2 sensor in 5 years. If anybody has a part number for another WB O2 sensor I can use with the LC1 let me know because I hate the Bosch sensors.

Its not the sensors fault, the LC1 and Innovate products are brutally hard on sensors.

[GLHNSLHT2]

you guys have some shitty luck.

[BIGBRUDDA]

For what its worth. At one time I did a side by side comparison test Of Bosch and NTK sensors , same heat source. Both read within 5% of each other. However the Bosch seemed to fluctuate more easily. And readings crashed during cool down.

[turbovanman²]

you guys have some shitty luck.

With what, LC1's? Go their forum if you dare, its a brutal issue for them that they can't fix.

[88C/S]

NTK does well with gasoline and Bosch does well with E85 from my experience.

[supercrackerbox]

Mopar sensors are sourced from NTK.

So it's a crapshoot no matter what I guess.

Perhaps. Or it could be the fact that the couple of NOS Mopar sensors I bought were dated older than the car they were going on, and who knows how many times they'd been moved, dropped, and/or tossed back on the shelf in that time.

[GLHNSLHT2]

With what, LC1's? Go their forum if you dare, its a brutal issue for them that they can't fix.

O2 sensors in general.

[boboli]

My niece had a 08 Chevy pickup that had a problem throwing a rich code that would only go away if you ran E85. Replacing the back O2 sensor, with Bosch, solved the rich code,but it then would throw an O2 heater resistance code. Swapped the Bosch O2 twice and the code always returned. Luckily the truck was stolen and last seen being driven across the border to Mexico. Good riddance!