Where are the 4 O2 sensors?

[acolic]

Hi

I found two of them attached to my catalytic converters but I can’t find the other two.



I have traced the exhaust from the exhaust to the motor. I must be missing them.

Can someone please narrow the search for me

Thanks

Alex


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[Fast69Mopar]

The pic that you posted is showing one of the downstream O2 sensors.

You have 2 x upstream oxygen sensors which are pre-cat. Look further up the pipe, closer to the exhaust manifolds, on top of the pipes closest to the floor pan/firewall.

 

[acolic]

Thanks I must’ve missed them.

Can they be changed from above or do they have to be change from below?

Thanks for the help.


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[ramportin1]

You'll do it from below

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[Marley]

And don't forget a breaker bar and some Kroil, you'll need them.

 

[acolic]

Ok I have no idea how anyone can take off the 02 sensors?

I can’t get leverage on the breaker bar. I’ve soaked it in PB hopefully a miracle happens over.

What bright engineer decided to put the O2 sensors in the spot. I mean they could have been rotated a bit and then this would have been a lot easier.


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[ramportin1]

Been a long while since I didn't have long tubes but either remove front wheels and liners or get something to put up against the bar and smack that ish with a hammer

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[Marley]

Let the pipes warm a little.

Yeah I had one that I had to stand on my head and speak in tongues to break loose.....and some profanity.