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2001 Toyota Camry PO420

Tiny
BIGBODYCHEVROLET
  • MEMBER
  • 2001 TOYOTA CAMRY
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 133,000 MILES
First of all its a camry Solara wasn't in the drop down window. Hey I keep getting a PO420. Used to come on about every week. I replaced the rear cat today now it takes about 10 20 miles for the code to come back after I clear it. I torqued the manifold it was ok. I don't hear an exhaust leak anywhere. It has a pre-cat on it. I thought it might be it. Don't really know. Both 02 sensors are reading voltage. Any suggestions would be appreciated.
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Tuesday, January 15th, 2008 AT 9:06 PM

2 Replies

Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
I would change the pre cat. If that is it your sensor is bad or the pcm is not reading it properly.
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Tuesday, January 15th, 2008 AT 9:42 PM
Tiny
BIGBODYCHEVROLET
  • MEMBER
  • 2 POSTS
Is it possible that the cat I got isn't 50 state emissions? Which my car has. Can I put a header on where the precat used to be without major complcations? Thanks
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Tuesday, January 15th, 2008 AT 11:58 PM

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