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#1
07-02-2005, 11:59 PM
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98 civic PO420 check engine code
So, I'm stumped by this... My dad and I checked the code, and it was PO420, which is either a bad oxygen sensor (primary or secondary) or a leak in the catalytic converter/exhaust system, and we manually checked the o2 sensors and they were both excellent, and I don't know what to do... There aren't any exhaust leaks, but I don't want to take it into a shop, b/c they're way too overpriced... I even replaced the front o2 sensor b/c the guy at autozone said that was what was wrong... guess not.
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www.civicland.com www.turbod16.com Quote:
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#2
07-03-2005, 04:50 AM
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Re: 98 civic PO420 check engine code
your cat is gone
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99 [email protected] psi si- I voted for the Terminator for Gov. 95 HB- B16a2- SC34@12psi WTB: USDM B16a2 or B16a3 complete short block. pm is the key. FS: B series InlinePro cast mani, PnH RC 550s, and Hondata S2b. pm me.
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#3
07-05-2005, 11:11 PM
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Re: 98 civic PO420 check engine code
lol nope, last time i checked it was still there... but yeah, i have no clue...
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www.civicland.com www.turbod16.com Quote:
Quote:
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#4
07-06-2005, 12:47 AM
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Re: 98 civic PO420 check engine code
your catalytic converter is no good.
__________________
99 [email protected] psi si- I voted for the Terminator for Gov. 95 HB- B16a2- SC34@12psi WTB: USDM B16a2 or B16a3 complete short block. pm is the key. FS: B series InlinePro cast mani, PnH RC 550s, and Hondata S2b. pm me.
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