o2 sensor

[luis]

What's the best way to clean em out

 

[JPNinPA]

Don't know. I replaced mine. What code are you throwing??

 

[luis]

Don't know. I replaced mine. What code are you throwing??

P0171 running lean on bank 1 and then a code for throttle position input high or something like that

 

[Utah_jeepster]

Currently there is no known way to rebuild or clean these units out. There listed as non-serviceable. We have had some luck cleaning the carbon deposits off the front face with scotchbrite pads, but this is only a temp fix, and 90% of the time we end replacing them.

 

[jfrabat]

P0171 running lean on bank 1 and then a code for throttle position input high or something like that

I get the TPS input one when I floor it for a while (like 30 seconds or so). I wonder if it's also the O2 sensor acting up...

 

[luis]

I get the TPS input one when I floor it for a while (like 30 seconds or so). I wonder if it's also the O2 sensor acting up...

Well I thought o2 sensors were gona cost me an arm and a leg turns out there only bout 35 here in az. But I cleared the code yesterday after I cleaned a few things and hasn't came back. Iv been driving it quit a but aswell and seems to be running a lot better

 

[mud4feet]

Well I thought o2 sensors were gona cost me an arm and a leg turns out there only bout 35 here in az. But I cleared the code yesterday after I cleaned a few things and hasn't came back. Iv been driving it quit a but aswell and seems to be running a lot better

Just keep an eye on your gas mileage. Those O2 sensors will suck the gas mileage down when they quit doing their thing, whatever that is. When mine went bad (I have 2!?!?) also noticed an appreciable loss of power. Hope that helps.

 

[luis]

Just keep an eye on your gas mileage. Those O2 sensors will suck the gas mileage down when they quit doing their thing, whatever that is. When mine went bad (I have 2!?!?) also noticed an appreciable loss of power. Hope that helps.

Ya but usually if they go bad the code will come up. I know I only c 2. One at the manifold and one after the cat next to my transfer case. But parts store ppl r telling me there is 3. 2 upstream and one down stream. I must be blind but I only c 2

 

[mud4feet]

Ya but usually if they go bad the code will come up. I know I only c 2. One at the manifold and one after the cat next to my transfer case. But parts store ppl r telling me there is 3. 2 upstream and one down stream. I must be blind but I only c 2

Yeah, you're right! Will generally flip a code. I have an '03 4 banger......only 2 - one up by the manifold and the other one down underneath. I've always wondered what the difference is between "upstream" and "downstream".....different part numbers but what's the difference between what they do???? One more thing that makes you go "hmmmmm?????".

 

[luis]

Yeah, you're right! Will generally flip a code. I have an '03 4 banger......only 2 - one up by the manifold and the other one down underneath. I've always wondered what the difference is between "upstream" and "downstream".....different part numbers but what's the difference between what they do???? One more thing that makes you go "hmmmmm?????".

Well I think upstream reads the true exhaust and downstream reads the filtered exhaust that goes through the cat and makes adjustments based on those reading. My guess is different material since the exhaust before the cat is much "harmful"

 

[mud4feet]

Well I think upstream reads the true exhaust and downstream reads the filtered exhaust that goes through the cat and makes adjustments based on those reading. My guess is different material since the exhaust before the cat is much "harmful"

That makes sense......thanks for the education!!

 

[luis]

That makes sense......thanks for the education!!

It's just a hunch I should be somewhat close and ur welcome

 

[jps4jeep]

100% correct regarding up stream and down stream.

Most post 02 vehicles will have 2-4 up stream, mulitple cats, and corresponding down stream sensors. to better ID motor issues.

 

[superj]

man, all those o2 sensors. thats crazy.

 

[luis]

100% correct regarding up stream and down stream.

Most post 02 vehicles will have 2-4 up stream, mulitple cats, and corresponding down stream sensors. to better ID motor issues.

Damn that's a lot of spending when all those goes to shit. Cats aren't cheap

 

[JPNinPA]

Damn that's a lot of spending when all those goes to shit. Cats aren't cheap

Tell me about it. On top of the cost of O2's the Cats are known to go bad.

PS I hope you put OEM O2 in there and not aftermarket. Many report issues with aftermarket Os's.

 

[luis]

Tell me about it. On top of the cost of O2's the Cats are known to go bad.

PS I hope you put OEM O2 in there and not aftermarket. Many report issues with aftermarket Os's.

The code came up but I didn't replace the o2 sensors. I just cleaned out the tb and map sensor and boy were they dirty

 

[luis]

Well the code came up again. Same code. But my jeep died but started up and drove fine. Guys at checker said that o2 sensors can't kill the engine. I also told them I cleaned out my throttle body with carb cleaner and I told em I also cleaned out the tps, idle control valve and map sensor with the same cleaner. The idle control valve broke so I replaced that. They also said the same can happen to the map sensor and the map sensor can kill the engine and through out too lean on bank 1. I need your insights in my problem as my vehicle is my DD

 

[superj]

Have you a multimeter to test your sensors? If not, drive to your auto parts place and tell the dude you want to know about multimeters and if they can give you a quick show on how to use it so you can test your sensors. Then you will know if your map is bad or not.

On the newer jeeps, do you have to adjust your tps to a certain amount when you put it back on? On my xj, I had to measure the resistance when installing the tps after cleaning or it would read wrong and cause all kinds of running issues

 

[luis]

Have you a multimeter to test your sensors? If not, drive to your auto parts place and tell the dude you want to know about multimeters and if they can give you a quick show on how to use it so you can test your sensors. Then you will know if your map is bad or not.

On the newer jeeps, do you have to adjust your tps to a certain amount when you put it back on? On my xj, I had to measure the resistance when installing the tps after cleaning or it would read wrong and cause all kinds of running issues

No no adjustments at all. I have a multimeter somewhere. I'm kinda in a pickle cuz in my jeep the map sensor I have was only made in a few hundred Jeeps and cost 100 dollars. For some reason in 97 they change map sensors mid year