Check engine light problem

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meteor
Posts: 8
Joined: Sat Feb 11, 2012 11:44 am

Check engine light problem

Post by meteor »

I have Pontiac vibe 2003.Last 5 months I have check engine light on.But last year I changed catalityc converter.Two days ago I was at emission and didnt pass.He told me that my catalitic converter is clean and he sold me some liquid to pour to tank ethanol like that.And it didnt help me too.Can you give some advice please
keithvibe
Posts: 4953
Joined: Sat Sep 23, 2006 3:52 am
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Re: Check engine light problem

Post by keithvibe »

got to get the code read and post the results here before we can start to help.
Most any autoparts stores will read the codes for you.
2010 Vibe & member of the yeargarage Email me if you need to talk to me, click my siggy and send the email threw the contact page.
Bedlam
Posts: 186
Joined: Thu Nov 23, 2006 10:33 am

Re: Check engine light problem

Post by Bedlam »

if you already changed your cat and end up with a P0420 code, your next stop is a new downstream 02 sensor. I just replaced mine on my 03 and was able to finally pass emissions.

If you still have troubles, you can use a non-fowler extension with a few bits of steel wool. This takes a little patience and drilling though to make work right. The cat and 02 sensor are your first stops though and will most likely fix 95% of the P0420 codes out there.
07 1ZZ 5spd Stealth - Sold
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meteor
Posts: 8
Joined: Sat Feb 11, 2012 11:44 am

Re: Check engine light problem

Post by meteor »

from AutoZone:

Troubleshooting P0420

The oxygen sensors monitor the Catalytic Converters ability to store oxygen.
Probable cause
a1-Catalytic converter defective(failure possibly due to#2,3 or 4)
a2-Engine misfire or running condition
a3-Large vaacuum leak
a4-Engine oil leakage into exhaust-valve guide seals,piston rings
MarkM66
Posts: 17
Joined: Tue May 01, 2012 10:24 am

Re: Check engine light problem

Post by MarkM66 »

Bedlam wrote:if you already changed your cat and end up with a P0420 code, your next stop is a new downstream 02 sensor. I just replaced mine on my 03 and was able to finally pass emissions.

If you still have troubles, you can use a non-fowler extension with a few bits of steel wool. This takes a little patience and drilling though to make work right. The cat and 02 sensor are your first stops though and will most likely fix 95% of the P0420 codes out there.
This code cam on in my '04, and I did the anti fouler trick. CEL never came back on.

IMO, a P0420 equals anti fouler trick. :D
meteor
Posts: 8
Joined: Sat Feb 11, 2012 11:44 am

Re: Check engine light problem

Post by meteor »

How to do anti fouler trick?
MarkM66
Posts: 17
Joined: Tue May 01, 2012 10:24 am

Re: Check engine light problem

Post by MarkM66 »

It's all over, here's one;

http://www.civicforums.com/forums/229-e ... -pics.html" onclick="window.open(this.href);return false;

Or search ebay for 02 extender, tons of them on there.
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