Cat Issues........
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Junior Member
Joined: Apr 2013
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Cat Issues........
Okay, this is for my dad's truck. I am purchasing all the parts to take with me when I go see him in two weeks to fix his cloged cats on his 2001 F150.
My last vehicle was a Toyota 4Runner. Several years ago the cats clogged up on it and they were "fixed". I found a chip that's the size of a matchbook that ya wire into your PCM and it tells the computer that the O2 sensors are working fine. It worked like a charm for my Toyota and now I am going to need one for his truck.
Where in the world do I find one at ?
My last vehicle was a Toyota 4Runner. Several years ago the cats clogged up on it and they were "fixed". I found a chip that's the size of a matchbook that ya wire into your PCM and it tells the computer that the O2 sensors are working fine. It worked like a charm for my Toyota and now I am going to need one for his truck.
Where in the world do I find one at ?
Senior Member
Joined: Sep 2011
Posts: 2,531
Likes: 91
From Brownings thread:
I couldnt seem to find any threads about this mod, so I'm making one myself.
What does this mod do? this mod tricks your O2 sensors into thinking that your catalytic converters are still there so you do not throw a code when you cut them off.
How does it work? the spark plug non-foulers restrict the flow of gasses getting to the sensor therefore making it think the cats are still there filtering
Supplies needed-
[*]2 sets of 2 18mm spark plug non-foulers part number 42009[*]PB Blaster or some other rust penetrant[*]1/2" drill bit and a drill[*]19mm wrench[*]a set of channel locks[*]ratchet with an 8mm socket[*]a very small flathead screw driver
to start out, unhook the negative battery cable using your 8mm socket
now get under the truck and spray the living crap(for lack of a better phrase) out of the o2 sensors with your penetrating spray
while the PB is doing it's job go get your spark plug non foulers
and drill a 1/2" hole in the end of two of them. Careful not to booger your threads. This hole allows the top one to screw over the tip of the sensor shown here
After you have your holes drilled go inplug the sensors, use the little screw driver to pop the prong on the plug and relese it.
Unscrew the sensors from the pipe and take them out.
put the drilled out fouler onto the sensor first, tighten it down, then put a non drilled one over it and tightnem it down as well. it will look like this before you put it back in
Now screw it back into the pipe, tighten it up, then plug it back in
All thats left to do after that is hooking the battery back up.
Before I did this my CEL was on, when I started it up after this it promptly went off. As usual, if You have any questions I am happy to help
What does this mod do? this mod tricks your O2 sensors into thinking that your catalytic converters are still there so you do not throw a code when you cut them off.
How does it work? the spark plug non-foulers restrict the flow of gasses getting to the sensor therefore making it think the cats are still there filtering
Supplies needed-
[*]2 sets of 2 18mm spark plug non-foulers part number 42009[*]PB Blaster or some other rust penetrant[*]1/2" drill bit and a drill[*]19mm wrench[*]a set of channel locks[*]ratchet with an 8mm socket[*]a very small flathead screw driver
to start out, unhook the negative battery cable using your 8mm socket
now get under the truck and spray the living crap(for lack of a better phrase) out of the o2 sensors with your penetrating spray
while the PB is doing it's job go get your spark plug non foulers
and drill a 1/2" hole in the end of two of them. Careful not to booger your threads. This hole allows the top one to screw over the tip of the sensor shown here
After you have your holes drilled go inplug the sensors, use the little screw driver to pop the prong on the plug and relese it.
Unscrew the sensors from the pipe and take them out.
put the drilled out fouler onto the sensor first, tighten it down, then put a non drilled one over it and tightnem it down as well. it will look like this before you put it back in
Now screw it back into the pipe, tighten it up, then plug it back in
All thats left to do after that is hooking the battery back up.
Before I did this my CEL was on, when I started it up after this it promptly went off. As usual, if You have any questions I am happy to help