 Check Engine Light Came On Again, Code P0420 |
 May 27, 2006 - 2:00 PM
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 Enthusiast  Joined Jan 28, '05 From Redondo Beach, CA Currently Offline Reputation: 86 (100%)  |
I got a new code after i got the header on, P0420, catalyst effieciency below threshold...so either the O2 sensors are bad or not tight enough?
This post has been edited by LewFX: May 27, 2006 - 2:53 PM --------------------  |
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Jun 5, 2006 - 6:40 PM
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 Enthusiast Joined Aug 18, '04 From Silverdale, WA Currently Offline Reputation: 0 (0%) |
The problem is that the second O2 sensor is suposed to be reading after the first cat which with a header like mine you removed it. If you get it inserted in the pipe just after the second cat it should get a low enough reading that you won't get the CEL but it won't help your emissions. I hope you kept what you could off of your stock manifold so that you can put it back on when it comes time to pass smog.
This post has been edited by bindertch: Jun 5, 2006 - 6:41 PM |
Posts in this topic
LewFX Check Engine Light Came On Again May 27, 2006 - 2:00 PM
Batman722 try reseting the ECU and seeing if it comes back a... May 27, 2006 - 11:54 PM LewFX first i tried resetting the ecu and it came back a... May 28, 2006 - 12:14 AM presure2 make sure the plug is securly connected May 29, 2006 - 6:40 AM toyotacrazy Do you have a catalytic convertor? If so its prob... May 29, 2006 - 6:53 AM
presure2 QUOTE(toyotacrazy @ May 29, 2006 - 7... May 29, 2006 - 6:55 AM LewFX still no problems with it yet, as soon as the ligh... May 29, 2006 - 12:44 PM bindertch If it does come back on you should think about mov... May 29, 2006 - 9:40 PM LewFX well today the CEL came on again, what to do now..... Jun 1, 2006 - 7:56 PM Bitter some 3rd gen eclipse folk have had luck using a sp... Jun 1, 2006 - 8:14 PM LewFX the guy who sells the header told me that it was s... Jun 1, 2006 - 9:49 PM Bitter ok, does your car have a black plastic thing near ... Jun 1, 2006 - 9:58 PM LewFX diagnostic Jun 1, 2006 - 10:40 PM Bitter QUOTE(LewFX @ Jun 1, 2006 - 10:40 PM... Jun 3, 2006 - 2:56 AM LewFX bump Jun 2, 2006 - 9:10 PM LewFX possible probs are:
1) three-way catalytic coverte... Jun 3, 2006 - 11:20 PM LewFX ya i kept everything when i get it smogged. so the... Jun 5, 2006 - 8:05 PM LewFX well bought a new O2 sensor and reset the ecu, hop... Jun 5, 2006 - 10:01 PM toyotatech QUOTE(LewFX @ Jun 5, 2006 - 10:01 PM... Jun 6, 2006 - 9:03 AM bindertch QUOTE(LewFX @ Jun 6, 2006 - 1:05 AM)... Jun 6, 2006 - 2:10 PM Bitter try getting a universal cat thats meant for a larg... Jun 6, 2006 - 2:59 PM LewFX well since i know the guy who does the smog, ill t... Jun 6, 2006 - 7:59 PM LewFX well what do you know, it came on again, what a su... Jun 9, 2006 - 8:18 PM LewFX should i cut the bottom sensor and jimmy it to the... Jun 11, 2006 - 8:08 AM Bitter no, dont do that. extend the sensor and have it... Jun 11, 2006 - 6:17 PM Bitter http://www.club3g.com/forum/showthread.php?t=55284... Jun 11, 2006 - 8:08 PM LewFX ill try that. Jun 11, 2006 - 8:19 PM LewFX k bought some anti-seize, the 2 foulers, drilled i... Jun 11, 2006 - 10:01 PM LewFX okay i got the fix done today, lets hope this fixe... Jun 12, 2006 - 6:30 PM Bitter cool, keep us updated as to wether or not it works Jun 12, 2006 - 6:46 PM |
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