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Old 08-13-2005, 10:51 PM   #1
t.renz
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Default mech cel fix, 100 miles later the light came back, now what?

I have an up pipe and catted TB. Ideas? I need to get this thing inspected asap!
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Old 08-13-2005, 10:56 PM   #2
Mulder
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Have you gotten it scanned to be sure it's the same code? Did you do the resistor fix for the uppipe as well?
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Old 08-13-2005, 11:04 PM   #3
JRSCCivic98
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EM with proper CEL defeats in the map would work wonders for you.
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Old 08-14-2005, 06:05 PM   #4
t.renz
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No money for em right now...
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Old 08-14-2005, 06:16 PM   #5
chrisboostinWRX
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Get the MIL eliminator from Pony Express. Its $20. Just wire it in. Or if you dont have $20 you can build the circuit yourself for about $3 from radio shack.

Chris.
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Old 08-14-2005, 07:35 PM   #6
REX8
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Quote:
Originally Posted by chrisboostinWRX
Get the MIL eliminator from Pony Express. Its $20. Just wire it in. Or if you dont have $20 you can build the circuit yourself for about $3 from radio shack.

Chris.
NO!!!! The MIL will get you nothing but the CEL turned off. IT WILL NOT PASS INSPECTION!!! The MIL is USELESS.
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Old 08-14-2005, 07:38 PM   #7
gc835
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go mechanical dude. its the best way youll set no codes instead of covering one up
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Old 08-14-2005, 07:42 PM   #8
pityr
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Quote:
Originally Posted by gc835
go mechanical dude. its the best way youll set no codes instead of covering one up

he has the mech fix and he still has the CEL. he needs to go get the code read to make sure its the O2 sensor and not something else.
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Old 08-14-2005, 10:23 PM   #9
bofh
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Quote:
Originally Posted by pityr
he has the mech fix and he still has the CEL. he needs to go get the code read to make sure its the O2 sensor and not something else.
He has A mechanical fix, and he has A CEL, but which one? Sometimes it takes a bit of tunning. Pull the CEL, and tell us.
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Old 08-14-2005, 11:06 PM   #10
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as stated above, are you sure you're throwing that code and not another one? if so, you're the first documented person that the mechanical fix did not work for...
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Old 08-14-2005, 11:13 PM   #11
REX8
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Quote:
Originally Posted by spankaveli
as stated above, are you sure you're throwing that code and not another one? if so, you're the first documented person that the mechanical fix did not work for...
There are actually plenty of people that the mech. fix doesn't work for. Make sure the mech fix is 100% correct, then reset and try again. Worked for me...
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Old 08-14-2005, 11:17 PM   #12
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odd..
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Old 08-14-2005, 11:31 PM   #13
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Quote:
Originally Posted by REX8
There are actually plenty of people that the mech. fix doesn't work for. Make sure the mech fix is 100% correct, then reset and try again. Worked for me...
most of the ones that I have heard it not working on were the newer 04+ models. I haven't personally come across someone (who installed it right) with an 02/3 that it didn't work for.
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Old 08-15-2005, 01:08 AM   #14
sheikthin
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Quote:
Originally Posted by pityr
most of the ones that I have heard it not working on were the newer 04+ models. I haven't personally come across someone (who installed it right) with an 02/3 that it didn't work for.
did you buy the actual mechanical fix from someone like gruppe-s or perrin? or did you make them with the spark plug antifoulers piggybacked?
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Old 08-15-2005, 01:26 AM   #15
roninwarior007
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Quote:
Originally Posted by REX8
NO!!!! The MIL will get you nothing but the CEL turned off. IT WILL NOT PASS INSPECTION!!! The MIL is USELESS.

I just pass NY state inspection this pass week with the scoobysport electronic fix. Not all electronic fixes will cause the O2 sensor to fail. Get one then find an Autozone and have them run the I/M readiness test on the scantool (they should be able to do it... same ammount of time as pulling a code ?shrug?)
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Old 08-15-2005, 01:50 AM   #16
pityr
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Quote:
Originally Posted by sheikthin
did you buy the actual mechanical fix from someone like gruppe-s or perrin? or did you make them with the spark plug antifoulers piggybacked?

I made my own using the spark plug antifoulers. Worked for ove 20K miles so far
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Old 08-15-2005, 04:17 AM   #17
t.renz
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I onlt used 1 antifouler, should I have used the second??

Thanks!
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Old 08-15-2005, 07:35 AM   #18
mixup52
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Quote:
Originally Posted by t.renz
I onlt used 1 antifouler, should I have used the second??

Thanks!
Yes! You need both of them to work, But only need 1 to be drilled out.
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Old 08-15-2005, 10:53 AM   #19
spankaveli
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Quote:
Originally Posted by t.renz
I onlt used 1 antifouler, should I have used the second??

Thanks!
yes
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Old 08-15-2005, 11:08 AM   #20
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Like many have already said, until the real CEL code it known, it could be anything. If you don't have or know someone with a code reader, go to Autozone and they will pull it for FREE.

I am not sure if by "catted TB" you mean no cats at all so ...

If it is still the P0420 code:
Here is another way to get rid of that CEL.

If you still have your 3rd cat, go to a competent muffler shop and have them move the rear O2 sensor from in front of the 3rd cat to behind the 3rd cat. If they do it right, the sensor wires are long enough to do this. Cost = ~$25, including the new sensor bung.

What this does is move the O2 sensor out of the dirty air (no 2nd cat) into clean air (behind 3rd cat) and the CEL goes away.

I would guess that, if you modify the length of the sensor wires themselves, you will ruin the resistance expected by the sensor and create other unwanted problems.

This DOES work (@ least, it has for me). 2 years and no CELs.
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Old 09-06-2005, 10:22 PM   #21
rad one
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Quote:
Originally Posted by t.renz
I onlt used 1 antifouler, should I have used the second??

Thanks!
where does the second antifouler go? on the up pipe. where can i buy these magical items? is there a step by step somewhere? i searched but didnt find anything. thanks

rad
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Old 09-06-2005, 10:24 PM   #22
spankaveli
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screw them together and drill out the top one 1/2", screw the o2 into the top and then screw all 3 (o2 and both antifoulers) in to the DP

Last edited by spankaveli; 09-06-2005 at 10:33 PM.
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Old 09-06-2005, 11:53 PM   #23
bofh
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Quote:
Originally Posted by rad one
where does the second antifouler go? on the up pipe. where can i buy these magical items? is there a step by step somewhere? i searched but didnt find anything. thanks

rad
I can't believe you searched and found nothing. Even searching for anitfouler, you would get several posts pointing you to "mechanical 02 fix" and a step by step post.
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Old 09-08-2005, 09:36 PM   #24
2.oh turb
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im goin on three years w/ a cel and the only thing i do is put a case of miller lite in the driver's seat when i drop it off for inspection. works wonders actually, my cel goes off every once in a while for like a day or two. is this normal?? seems kinda weird to me. thanks.
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