O2 Senson Bank 2

[mistermaclincoln]

Got a check engine light and check for codes and got a 175 code. Bank 2. Can anyone tell me which side is bank 2.

Thanks

 

[Roadboss]

driverside

 

[mistermaclincoln]

02 Sensor Bank 2

I really thought it was on the passenger side. Is that because of the firing order?

 

[Aquabrit]

It's to do with how our V8's are numbered.

4 8
3 7
2 6
1 5
Front

As you can see, cylinder 1 starts at front passenger side, therefore that side is bank one, making the driver's side bank two.

Just for giggles, the firing order is:

1-3-7-2-6-5-4-8

 

[mistermaclincoln]

02 Sensor Bank 2

Okay that makes sense. I am really tried purchasing the Ford O2 sensors they seam to last as long as the Bosh aftermarket, any thought on this.

 

[Aquabrit]

I'm always hearing bad things about Bosch stuff. Might as well get original Ford ones from Max at Five Star Ford.

 

[mistermaclincoln]

I will give Max a call, I just wish I was having better luck because I am not with either manufacturer.

Thank you,

 

[Aquabrit]

Did you replace the 02 sensors before then? Seems strange that one would be bad again so soon? What's that code you got? That a lean code? Just wondering if something else like a vac leak could cause the code?

If they are relatively new, I guess you could take them back out, clean them and switch them around? See if code goes or moves?

 

[mistermaclincoln]

Well, I have to remember which 02 sensor I just replace last year. I know that a vaccum leak can be suttle and I might have to get the carb spray out but do you know where to look? I am going to re-test with the scanner. Last year I replaced the passenger side cat and collector, my 02 sensors were bad and to much fuel had entered the cats but since then everything has been fine. I really need to get this figured out because I don't want to smell gas and ruin my new cat.

 

[Aquabrit]

So you have one new 02 sensor and one old? Normally you should replace them as a pair. Vacuum leak on a 95? Could be anywhere really - check those little black pipes on top of the engine (common leak point) check the IMRC's, also check the intake tube is tight etc. You should find a leak easily enough with the carb cleaner. Any small leak / unmetered air entering engine could cause a slightly lean condition.

 

[mistermaclincoln]

Well, I did the carb cleaner to see if there were any leaks and nothing happen so I look at all of the vaccum lines, check the IMRC solenid lines check all of the driver side vac lines and no leaks. Went to the passenger side and I found the air tube hoses had split part way and just barely hanging on. I did notice that the previous owner only had the hoses tie rap on so I did the right and clamp all of the new hoses that I put everything back on. So I am happy to report that after checking for codes, none came up and the car idles a lot better and I have better throttle response and no check engine light. Thank you for all your help.

 

[Aquabrit]

Ah, cool - glad you were able to sort it out without having to spend much money!

 

[mistermaclincoln]

Yep, had enough to do a oil change and PCV valve. Again thanks for all you help.