I replaced my MAP sensor and did a tune up on my truck this weekend. My truck runs stronger now and appears to be getting a little bit better MPG. Today I ordered 2 new upstream O2 sensors from the NGK website. I hope they will help to increase the MPG now. I still have the original O2's and they have 110,000 miles on them. I think they are getting lazy. I can smell the rich exhaust for the first few seconds when I start my truck but I have no codes stored.

I keep reading here and other places about how bad Bosch O2's are and they don't work well on Dakota's. Is that really true? Has anyone had good luck with a Bosch O2 sensor? Has replacing the O2 sensor, regardless of the brand helped anyone's MPG?

By the way, my sensors were only $30.00 each online. I will have to wire in the connectors from the old ones, and I paid a little extra for 3 day UPS shipping. But still it cost less for one new one at the dealer, and even less for a Bosch from Advance or Autozone.

Any info is appreciated, I'm just trying to get my truck to run the best I can and hoping we don't see $4.00+ for gas this summer. It goes up more every day here. Truck is a 2001 w/3.9 and 5 speed manual.

Thanks,

Jimmy

 

i dont know exactly why bosch o2s suck but none the less, bgk are the way to go. and persoanlly i would of went with the plug and play connectors considering theres a 0-1 volt signal that has to be sent back to the pcm and resistance from soldering (solder and shrink wrap only on wire connections that are exposed to the elements, otherwise there's a good chance you will have electrical problems down the road) or other types of connections may cause poor readings in turn poor engine and mpg performance. personally id try to return those and spend twice as much for the plug and play sensors, but hey its your truck.

 

I just got off the phone with NGK. They had called to say they only had one sensor in stock. So I asked if they had 2 of the direct plug-in type and they said yes. So I changed my order and got the direct plug type. It will be easier and more reliable that way, but I think with enough heat shrink and tape I could have made it waterproof. And it is still a lot less than one new one from Dodge. And 2 NGK's cost only a little more than 1 Bosch. I just hope I get better MPG.

Thanks

Jimmy

 

smart move honestly. plus you're not hacking up your harness just to save a couple extra dollars.

 

My Bosch O2 works great

nevermind that its ziptied to the frame and not mounted in the exhaust pipe....

 

My Bosch O2 works great

nevermind that its ziptied to the frame and not mounted in the exhaust pipe....