Bank 1 misfires
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Joined: Nov 2006
Posts: 108
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From: Florida
Just an update, I did finally replace the heads (found them for $100 bucks on CL). Truck runs fine now. If you do tear all that apart, remember to put the wire guides back on. Burned the #5 plug wire on the manifold
Oh well, live and learn. BTW, I'm guessing that it was a bad spring that was the cause of all this. The heads were freshly remanned, so new springs and such.
Oh well, live and learn. BTW, I'm guessing that it was a bad spring that was the cause of all this. The heads were freshly remanned, so new springs and such.
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Joined: Jan 2025
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Weird question about this problem
[img alt="So this is my exhaust (the previous owner put it on) same problem misfire on 1 3 5. Just did my intake and plenum gaskets. Now hughes engines says to replace the o2 sensor as it will cause misfire problems if insulted by carbon.
My question is. How could it make cylinders 1 3 5 misfire if it isn't reading them"]https://cimg2.ibsrv.net/gimg/dodgeforum.com-vbulletin/2000x1504/17368884601476746008624375113143_0218499402ad0ba11 347fc2ba48abd9a5b531876.jpg[/img]
So this is my exhaust (the previous owner put it on) same problem misfire on 1 3 5. Just did my intake and plenum gaskets. Now hughes engines says to replace the o2 sensor as it will cause misfire problems if insulted by carbon. My question is. How could it make cylinders 1 3 5 misfire if it isn't reading them
My question is. How could it make cylinders 1 3 5 misfire if it isn't reading them"]https://cimg2.ibsrv.net/gimg/dodgeforum.com-vbulletin/2000x1504/17368884601476746008624375113143_0218499402ad0ba11 347fc2ba48abd9a5b531876.jpg[/img]
So this is my exhaust (the previous owner put it on) same problem misfire on 1 3 5. Just did my intake and plenum gaskets. Now hughes engines says to replace the o2 sensor as it will cause misfire problems if insulted by carbon. My question is. How could it make cylinders 1 3 5 misfire if it isn't reading them
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Joined: Apr 2010
Posts: 87,267
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From: Clayton MI
[img alt="So this is my exhaust (the previous owner put it on) same problem misfire on 1 3 5. Just did my intake and plenum gaskets. Now hughes engines says to replace the o2 sensor as it will cause misfire problems if insulted by carbon.
My question is. How could it make cylinders 1 3 5 misfire if it isnt reading them"]https://cimg2.ibsrv.net/gimg/dodgeforum.com-vbulletin/2000x1504/17368884601476746008624375113143_0218499402ad0ba11 347fc2ba48abd9a5b531876.jpg[/img]
So this is my exhaust (the previous owner put it on) same problem misfire on 1 3 5. Just did my intake and plenum gaskets. Now hughes engines says to replace the o2 sensor as it will cause misfire problems if insulted by carbon. My question is. How could it make cylinders 1 3 5 misfire if it isn't reading them
My question is. How could it make cylinders 1 3 5 misfire if it isnt reading them"]https://cimg2.ibsrv.net/gimg/dodgeforum.com-vbulletin/2000x1504/17368884601476746008624375113143_0218499402ad0ba11 347fc2ba48abd9a5b531876.jpg[/img]
So this is my exhaust (the previous owner put it on) same problem misfire on 1 3 5. Just did my intake and plenum gaskets. Now hughes engines says to replace the o2 sensor as it will cause misfire problems if insulted by carbon. My question is. How could it make cylinders 1 3 5 misfire if it isn't reading them
That said, the PCM is likely "interpreting" what it sees in the exhaust, as it expects that sensor to be reading both banks. I would be tempted to put an x-pipe there, and stick the front O2 right in the middle of it.
One way to test if this is indeed an O2 sensor problem is: Unplug it. Clear codes, go for a drive. If the codes come back, not an O2 issue....
