Catalytic converter problem

M

Mel Bjork

Member
2008 tacoma 255,000 miles, I just had a valve job done and now I'm throwing a 420 code
Likely Causes For P0420 Trouble Code In A Toyota

A failed catalytic converter. Other less likely problems: an issue with the coolant temperature sensor, an exhaust manifold leak, a spark timing issue, leaking fuel injectors, misfires, or fuel oil contamination.

I put Seafoam in the tank today but it started running bad, losing power on acceleration, it idles very smooth. When I'm parked if i rev the throttle I hear a bunch of clattering from the Cat. I just removed the cat and a bunch of stuff fell out, kind of a ceramic looking material, couple questions is the cat shot? And any ideas on a new cat that can be shipped to California that won't break the bank?
 
Could try flowmaster. They worked for my tundra without throwing a code. Check the o2 sensors also. 2 were toast on my tundra v8, and the other 2 needed replacement shortly after.
 
Anyone know anything about these company's in Canada selling catalytic converters on Ebay for under $200? I found one on Ebay.

Edit: I just ordered one from ebay, I'll let you know how it works, I'm not sure what to think for $137?
 
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I haven't been in commmiefornia for 50 years but from what I understand they do a sniff test as part of their smog check. As well as being real a holes about aftermarket parts. I'd check on what it is exactly that you need to pass the smog check, you might be regulated to factory OEM catts.
 
Mel Bjork said:
2008 tacoma 255,000 miles, I just had a valve job done and now I'm throwing a 420 code
Likely Causes For P0420 Trouble Code In A Toyota

A failed catalytic converter. Other less likely problems: an issue with the coolant temperature sensor, an exhaust manifold leak, a spark timing issue, leaking fuel injectors, misfires, or fuel oil contamination.

I put Seafoam in the tank today but it started running bad, losing power on acceleration, it idles very smooth. When I'm parked if i rev the throttle I hear a bunch of clattering from the Cat. I just removed the cat and a bunch of stuff fell out, kind of a ceramic looking material, couple questions is the cat shot? And any ideas on a new cat that can be shipped to California that won't break the bank?
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Not sure if you know the “Right Person” but years ago on another truck I had, I paid a guy at a muffler shop $100.00 to hollow out my cat and put it back in with no guts inside it. He did what I asked, I paid him.. I went to do a smog check a few months later scared to death Id fail but I passed with flying colors every year afterwards soooo.. if you know someone or can find someone than “Cash Talks”.
 
I've had a case where it all depends who's doing those emission tests that day. I had one of my employee's take our chevy van in for a test, and it failed. Heard a case where you dump in a bottle of dry gas, and fill the tank full, you will pass any emission test. Well it worked. Our guy went through the test a couple hours later, and passed. Even the emission tech if you can call them that told our guy ''you sure have a sweet running truck.'' We got a laugh at that one.
On other cases with new vehicles, its a joke, its all about this emission program as another tax. I've never had a 2 year old vehicle ever fail an emission test.
 
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