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Simple fix for clogged catalytic converter

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.
1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
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Nuttydriver
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Simple fix for clogged catalytic converter

Postby Nuttydriver » Thu Nov 03, 2011 2:40 am

Hey everyone, for those of you that don't have the fancy emissions test I've found a way to hollow out a bad cat and not throw a check engine light. All you need is a spark plug non fouler, available at auto zone for a couple bucks and a tap to make new threads. Install the non fouler into the hole for the o2 sensor and reinstall the sensor after hollowing the cat. This allows the sensor to receive the proper heat readings but keeps it out of the now richer exhaust. I've done this to 3 different vehicles now with no problems. Sure beats buying a new cat.
Vehicles:
98 Volvo v70xc
99 dodge Dakota
81 chevy chevette
89 chevy k1500

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JimBee
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Re: Simple fix for clogged catilitic converter!!

Postby JimBee » Thu Nov 03, 2011 3:15 am

I don't get the hollowing part. How would you get inside the cat?

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Nuttydriver
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Re: Simple fix for clogged catilitic converter!!

Postby Nuttydriver » Thu Nov 03, 2011 3:24 am

Not sure haven't done it to my Volvo but if it's a straight shot a bar and hammer works well to break up what's inside it then you simply dump it out and hook the exhaust back up. Sometimes up have to cut the cat off and weld it back on as well.
Vehicles:
98 Volvo v70xc
99 dodge Dakota
81 chevy chevette
89 chevy k1500

scotts911e
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Re: Simple fix for clogged catilitic converter!!

Postby scotts911e » Sat Nov 12, 2011 9:16 am

Ok let me get this straight you say to install the non fouler where the o2 sensor goes and re-install the o2 after cleaning out the cat but you didn't say where to to re-install it considering the spark plug is in it's place now?

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Nuttydriver
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Re: Simple fix for clogged catilitic converter!!

Postby Nuttydriver » Sat Nov 12, 2011 3:29 pm

A spark plug non fouler is simply a small threaded spacer.
Vehicles:
98 Volvo v70xc
99 dodge Dakota
81 chevy chevette
89 chevy k1500

shiloh51933
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Re: Simple fix for clogged catalytic converter!!

Postby shiloh51933 » Sat Nov 12, 2011 3:58 pm

Has anybody tried this on there Volvo yet? My Cat is good but I'd like to know if this works good on my 850 for future reference.
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tjts1
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Re: Simple fix for clogged catalytic converter!!

Postby tjts1 » Sat Nov 12, 2011 4:26 pm

Destroying or removing a catalytic converter is illegal under federal and most state's laws even if your local jurisdiction doesn't require an annual or bi annual emissions test. The federal penalties include fines up to $2500 for the vehicle owner and up to $25,000 fine for the person that damaged or removed the catalytic converter.
http://www.epa.gov/air/caa/title2.html
Ambitious but rubbish

shiloh51933
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Re: Simple fix for clogged catalytic converter!!

Postby shiloh51933 » Sun Nov 13, 2011 2:08 am

tjts1 wrote:Destroying or removing a catalytic converter is illegal under federal and most state's laws even if your local jurisdiction doesn't require an annual or bi annual emissions test. The federal penalties include fines up to $2500 for the vehicle owner and up to $25,000 fine for the person that damaged or removed the catalytic converter.
http://www.epa.gov/air/caa/title2.html



Don't really understand why this was posted??? Who was talking about "Destroying or removing the catalytic converter"???? This person started this thread to demonstrate how to clean out there exhaust, atleast that was what I got from this thread. This was a method of cleaning your cat not removing or destroying.
If U Wanna Play U Gotta Pay!!

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tjts1
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Re: Simple fix for clogged catalytic converter!!

Postby tjts1 » Sun Nov 13, 2011 2:36 am

shiloh51933 wrote:
tjts1 wrote:Destroying or removing a catalytic converter is illegal under federal and most state's laws even if your local jurisdiction doesn't require an annual or bi annual emissions test. The federal penalties include fines up to $2500 for the vehicle owner and up to $25,000 fine for the person that damaged or removed the catalytic converter.
http://www.epa.gov/air/caa/title2.html



Don't really understand why this was posted??? Who was talking about "Destroying or removing the catalytic converter"???? This person started this thread to demonstrate how to clean out there exhaust, atleast that was what I got from this thread. This was a method of cleaning your cat not removing or destroying.

Re read the first post more carefully.
Ambitious but rubbish


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