ive come to the conclusion that my o2 sensors are shot and i need to change them. its an obd0 car so they are in the top part of the exhuast mani. anyone ever change those without taking the manifold off? they are in a tricky spot. just wondering if its possible before i try such a thing.

 

it'd probly be best for you to tak off the manifold honestly. i tried to get my old one off of my manifold for my header, but didnt come off at all. they are usually stuck on there pretty good. did you get the special socket for it? you will definitly need that if you dont have air tools

 

I've done it, but it was a royal PITA. If you have a really good penetrating lube, you can make it work.

 

PB blast and 22 mm wrench (ithink)worked for me

 

take the manifold off and use a 22mm. if you leave it on there is a chance you will strip it

 

yea true. ill definately soak the things.

which ones do i buy? its a obd0 b16a. should i get the b17a ones? or b18a?

 

I just left the mani on and used a 22mm wrench. hit it with a rubber mallet from under the car to get it loose and kept on turing until it was loose enough for me to get the rest of it off by hand.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slywfbpsi &raquo;</TD></TR><TR><TD CLASS="quote">I just left the mani on and used a 22mm wrench. hit it with a rubber mallet from under the car to get it loose and kept on turing until it was loose enough for me to get the rest of it off by hand.</TD></TR></TABLE>

Exactly what i was gonna suggest (if you dont have air tools). Air tools rule, but the mallet theory is a relatively good second best. But dont force it... if it feels like its beginning to strip then just take the mani off. Seems like a common sense piece of advice, but sometimes its better to hear stuff from somebody else.

 

Any single wire O2 sensors will work. ie

88-91 civic/crx
88-91 integra

etc.

Even universal onewire sensors will work as long as you change the plug to match your plugs on the harness.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 91civic &raquo;</TD></TR><TR><TD CLASS="quote">Any single wire O2 sensors will work. ie

88-91 civic/crx
88-91 integra

etc.

Even universal onewire sensors will work as long as you change the plug to match your plugs on the harness.</TD></TR></TABLE>

yeah i had to get a universal one for my header when i couldnt get the stock one off of my stock manifold

 

What are the signs of a bad o2 sensor, i think my one is shot as my car was throwing codes 1,43,44.
I changed the fuel filter and it ran perfect for about an hour, but now it misfires very badly and struggles to start.
Do you think the o2 sensor could cause this?
Thanks
Harry

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by harryr34 &raquo;</TD></TR><TR><TD CLASS="quote">What are the signs of a bad o2 sensor, i think my one is shot as my car was throwing codes 1,43,44.
I changed the fuel filter and it ran perfect for about an hour, but now it misfires very badly and struggles to start.
Do you think the o2 sensor could cause this?
Thanks
Harry</TD></TR></TABLE>Well, I was getting a #1 cel everytime I got on the car hard or drove for over 30 minutes but, would go away as soon as I turned off the car. Changed the o2 sensor haven't had a problem since except I don't get 280-300 a tank anymore.

 

im just bogging at anything under 20% throttle. those universal sensors are pretty cheap too arent they?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CRXofPain &raquo;</TD></TR><TR><TD CLASS="quote">im just bogging at anything under 20% throttle. those universal sensors are pretty cheap too arent they? </TD></TR></TABLE>

yeah there like $25

 

actua;;y tjey are cheaper than that. I got mine from autozone and they were $17.

 

17 each or both? anyway to test o2 sensors to see if thats actually my prob? i am 99.9% sure only only 1 is shot. yea yea 17 bucks is in most peoples couch cushions, im just tired of wasting money on stupid crap when im saving for a stroker kit.

 

Yeah, $17 each for the universal, you can test the o2 sensor by checking the voltage, 0.6v wot and 0.4v closed throttle if below any of those number replace o2 sensor.

 

where do i test them?

 

on the connector for the o2 sensor.

 

where exactly would i put the positive and negative leads from the multimeter