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Oxygen Sensors!!!
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Posted by: bullitt5177

I have a 2001 Bullitt, as you could guess. I've been having issues with my O2 sensors in the past year. At first, it was throwing a "Slow O2 sensor reponse, Bank 2, Sensor 1" with a pending Bank 1 Sensor 1, so I replaced the passenger side header sensor. Now it's throwing both codes, and there are no codes pending. I have long tube headers, and the last owner put O2 extensions on it. What I'm thinking though, is that whoever he bought the extensions from sent him MIL eliminators instead. Would that cause this?

Thanks so much for any responses.

Posted by: badass98svt

scotty, now that you have day light, you should crawl under there and see if the extensions ARE mil's.

Posted by: bullitt5177

Is there any way I can tell just from looking?

Posted by: bullitt5177

I guess I'll bench test the sensors too....

Posted by: badass98svt

see who makes them. look up that brands extensions and see if they look like yours. i would assume mils are wrapped in heat shrink. and extenders may not be, but im not sure.
also, i don't think mil's are as long as extensions, now that i think about it.

also, remove all the sensors(if you can brake them loose, remember mine?) and clean them with brake cleaner. I forgot to do that when we had mine out on clutch day.

Posted by: badass98svt

scotty, posted it over on MW. here's the link. a couple responses already.

http://www.mustangworld.com/forums/s...d.php?t=411388

Posted by: bullitt5177

What link?? You're killing me!!!

Posted by: badass98svt

read the post, cackmouth

Posted by: bullitt5177

Nice editing job, fagbag!!

Posted by: bullitt5177

I hadn't even thought of that. The last owner said he put in a "PHP Superchip", so I'll pull that out and see what happens.

Posted by: fordtech

ok, if you're extensions are just extensions, you should be able to ohm test them. unplug both ends, and using a ohm meter check resistance from one end to the other, one wire at a time. each wire should be less than 5 ohms, and there should be no connection between any 2 wires, over 20k ohms. as far as bench testing an o2 sensor, you can't. you can resistance test the heater portion of the sensor, but the signal portion (which is what sets this code) is a GENERATOR. it has a high resistance, and generates a voltage in response to exhaust oxygen concentration ONLY WHEN HOT. if it's cool enough to touch, it's too cold to generate a signal, regardless if it's good or bad.
you pulled a code on this, do you have access to a scan tool? if so, can it read data stream (pid's)?
The thing that i find interesting is that it's setting codes on both banks. this tells me that it's something that effects both banks equally. this eliminates the possibility of a single 02 sensor and or it's wiring being the fault.
If you can read data stream (pid's) look at long fuel trim bank 1, and long fuel trim bank 2 ( LFT1, LFT2) short fuel trim bank 1, and short fuel trim bank 2 (SFT1, SFT2) AND BARO . all fuel trims shount be within plus or minus %10. baro is a learned value based on your altitude. sea level is 160 hz, 5000 ft will be about 148 hz. if you baro is lower than that, either you have an unmetered air leak after the MAF, a vacuum leak, or a bad MAF. Any of these could cause this code.
Anyway, i would first make sure your extensions are NOT eliminators, then look air leaks. your 02 sensors are not the problem

Posted by: bullitt5177

Thanks much. I assumed it wasn't the sensors after it didn't fix itself after I replaced one. I'm getting really good mileage as well. I will Ohm test the extensions, but I don't think the scan tool I use would have data stream capability. I just use the one at Advance, it's just an OBDII code reader if I'm not mistaken.

Posted by: bullitt5177

Are they supposed to look this similar?

Posted by: badass98svt

those are def. MILs as far as i'm concerned.

here's a couple pics of o2 extensions.

http://cgi.ebay.com/ebaymotors/BBK-O...spagenameZWD1V

http://cgi.ebay.com/ebaymotors/BBK-O...spagenameZWD1V

Posted by: bullitt5177

Yep, they are. I just checked the resistance of the individual connections per FordTech's advice, and one wire was giving me a very high reading. I tested the MIL, and it was giving me the same response. What a tard the last owner was!!!

Thank you FordTech, you the man!!

Posted by: badass98svt

whatcha gonna do with the extra set?

hmmm, i sure couls use a set if you don't need them.
i'll give ya some cash if ya want broseph.

Posted by: bullitt5177

Sure man!! Hell, you can just have them!! I don't need 'em.

Posted by: 94gtstang50

Dammit, I just spent like $50 on a set of mil eliminators. Can I pass inspection with those on or will the computer still read an error for the O2's?

Posted by: bullitt5177

No, those are good. The idiot before me put them on the headers, so they were slowing the response from the front sensors. They work beautifully for the rear, just not for the front.

Posted by: badass98svt

scotty, you are the balls. hold onto those for me. don't give them away on me broseph.
so, now you need to order o2 extensions, right? must feel good knowing after some new extensions and a new alternator, you'll be running great AND pass inspection.

Posted by: bullitt5177

Yep, I've been thrilled all day today. Already ordered the extensions yesterday. I'm getting it inspected Saturday morning!!!! I'm very sick of the "racing" sticker, as I'm worried about getting pulled over for it. No worries PJ, those MIL's are yours!!

Posted by: Mustang5L5

Will the bullitt be ready for the cape cruise?

Posted by: bullitt5177

Yep. Alternator should be in tomorrow or the next day, and hopefully the extensions will come in before Saturday as well.

Posted by: Mustang5L5

Good, is ED coming we'll have to meet up together so we can all cruise down Sat together

Posted by: bullitt5177

True dat. We should try and get a nice chain going down. It's a long ass ride down there.

Posted by: bullitt5177

This code is still happening!! The light turned on again today!!!!!!

I'm so pissed off!! Anyone have any other ideas??

Posted by: badass98svt

are you sure its the same code?

Posted by: 94gtstang50

Quote:

Originally Posted by bullitt5177

This code is still happening!! The light turned on again today!!!!!!

I'm so pissed off!! Anyone have any other ideas??

Because someone was bound to say it, sell it and get a cobra...

j/k

Posted by: 94gtstang50

Which sensor is doing it? Bank 1 or 2?

Posted by: bullitt5177

Yep, I'm positive it's the same code. It says Bank 2, Sensor 1, so it'd be the passenger side header. Strange though, I drove it all day today, and when I got home and it was idling, I noticed the light wasn't on. I'm gonna drop by work on Wednesday and scan it to be sure, but I'm thinking it may have picked up the code before I fixed it. I'm not sure if I reset the comp before or after I installed the extensions.

Posted by: 94gtstang50

I'd clear it again anyway just to see if the code changes, what is the code exactly anyway?

Posted by: bullitt5177

P0153
O2 Sensor
CKT Slow Response
(Bank 2 Sensor 1)

Posted by: 94gtstang50

Thats freakin weird, I haven't had to deal with that code yet(somehow), you replaced the sensor?

Posted by: bullitt5177

Yep, the car had MILs on the front for some reason or another. I'm thinking that it's just a fluke light since I'm pretty sure I fixed the problem when putting in extensions.

Posted by: badass98svt

you still have my MIL's, broseph?

Posted by: bullitt5177

Yes, PJ, I still have your MILs. I told you man, those are all yours!!

Posted by: badass98svt

did you clear the code to see if it comes back, byotch?

Posted by: mustangdad

Quote:

Originally Posted by bullitt5177

I have a 2001 Bullitt, as you could guess. I've been having issues with my O2 sensors in the past year. At first, it was throwing a "Slow O2 sensor reponse, Bank 2, Sensor 1" with a pending Bank 1 Sensor 1, so I replaced the passenger side header sensor. Now it's throwing both codes, and there are no codes pending. I have long tube headers, and the last owner put O2 extensions on it. What I'm thinking though, is that whoever he bought the extensions from sent him MIL eliminators instead. Would that cause this?

Thanks so much for any responses.

Are ya still looking for some input on the sensors? I recently installed an x-pipe and (Bassani) exhaust on my 02 GT and chose not to use the MIl's. Did some research and determind once the exhaust is installed the car's computer should be flashed and calabrated to meet the new modifications done to the car. The MIL's are bypasses and the computer is the brain of the car and therefore, the brain knows you have done something to the car and it is continually searching for a fix. It's like trying to recover from surgery when in fact proper surgical techneques were not followed. I would highly recommend going with someone that specializes in mustangs for the computer flashing process.