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2nd Post ever.. 1st-HELP NEEDED!

 
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Old 04-18-2012, 09:31 PM
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2nd Post ever.. 1st-HELP NEEDED!

Okay so I've only had my 98 prelude for about 15days now, so far I couldn't be more happy with how its driving! 7 days ago my CEL came on:

read code: P0302
cylinder #2 misfire detected ?

the next day the CEL went off and I had not seen it again until today(April 18)
read code: P0302
&
read code: P0420 also shows up now
catalyst system efficiency below threshold bank 1 ??

Any thoughts or tips? ANYTHING will help
Plz & Thx
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Old 04-18-2012, 09:35 PM
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Re: 2nd Post ever.. 1st-HELP NEEDED!

Could be your egr ports
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Old 04-18-2012, 10:28 PM
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Re: 2nd Post ever.. 1st-HELP NEEDED!

Do you know any history on the car? I would probably try finding out when the last tune up was done. May be due for one..
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Old 04-18-2012, 10:45 PM
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Re: 2nd Post ever.. 1st-HELP NEEDED!

Quote:
Originally Posted by wing8806 View Post
Could be your egr ports
Makes since I guess. Just did some research on cleaning those out and replacing plugs. Never done it before and dont have the necessary tools for that kind of project :/

Any clue to how much I should expect someone to charge to do that?
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Old 04-19-2012, 12:13 AM
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Re: 2nd Post ever.. 1st-HELP NEEDED!

P0420 also shows up now
catalyst system efficiency below threshold bank 1 ??

Either you need a new 02 sensor before the cat or you need a new cat.
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Old 04-19-2012, 09:37 AM
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Re: 2nd Post ever.. 1st-HELP NEEDED!

I would eliminate the cat and see if that fixes it... Then again, I don't have to pass emmissions so that may not be an option for you
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Old 04-19-2012, 09:27 PM
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Re: 2nd Post ever.. 1st-HELP NEEDED!

Right on, thanks for the advice bmxfreak & goose... The research is paying off, but yeah I will need to pass emissions for sure. looking into the 02 sensor
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Old 04-20-2012, 07:37 PM
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Re: 2nd Post ever.. 1st-HELP NEEDED!

pray that you only have to replace the sensor cause cats aint cheap. neither are sensors for that matter. also, if you change the plugs, make sure to use platinum ngk. thats what honda would give you at the dealership.
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