hey guys i just installed my skunk2 catback and the CEL came on is there anything i need to do ...i disconnected the battary but it came back on

 

Defouler?

 

thats what i was thinking just wasnt sure tho thanks.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TRE_ &raquo;</TD></TR><TR><TD CLASS="quote">Defouler?</TD></TR></TABLE>

Aren't the O2 sensors on the header portion? Is there one on the exhaust section to?

 

by just adding an exhaust shouldn't set off a cel
installation error maybe?
retorque the bolts according to specs

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RICO_ &raquo;</TD></TR><TR><TD CLASS="quote">

Aren't the O2 sensors on the header portion? Is there one on the exhaust section to?</TD></TR></TABLE>yes you are correct
a defouler is needed only if you upgrade to a raceheader

 

My buddy had the same problem when he installed his Shunk2...

He had to replace both O2 sensors due to them getting damaged during the install

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Zesti1 &raquo;</TD></TR><TR><TD CLASS="quote">My buddy had the same problem when he installed his Shunk2...

He had to replace both O2 sensors due to them getting damaged during the install </TD></TR></TABLE>

WHen you do a cat back install, you should be no where near the O2 sensors. My guess is, that you didn't tighten it down enough and you have a leak some where.

Worse comes to worse take it to your local parts store and have them check the CEL code. It's usually free. i.e autozone.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RICO_ &raquo;</TD></TR><TR><TD CLASS="quote">

Aren't the O2 sensors on the header portion? Is there one on the exhaust section to?</TD></TR></TABLE>

Yea you are competley correct.... I read skunk2 exhaust but thought header anyway.... on me

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by huevosrancheros &raquo;</TD></TR><TR><TD CLASS="quote">

WHen you do a cat back install, you should be no where near the O2 sensors. My guess is, that you didn't tighten it down enough and you have a leak some where.

</TD></TR></TABLE>

Yep, its gotta be a leak since there aren't any O2 sensors past the one by the cat

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by drr86 &raquo;</TD></TR><TR><TD CLASS="quote">

Yep, its gotta be a leak since there aren't any O2 sensors past the one by the cat</TD></TR></TABLE>

unless he unplugged the O2 on the cat, and forgot to plug it back in

 

I installed a Skunk2 catback as well, but received no CEL. There's several reasons why you would receive them though (from what I could think up):

1) You/installer damaged the O2 sensor/ O2 sensor cable during installation. Usually from hammering the life out of those machine pressed $#*%@@!* bolts between the exhaust and the cat.

2) The O2 sensor loosened durning install.

3) You have an exhaust leak. Check the bolts and the gaskets along ALL parts of the catback, specifically the gasket and bolts where the exhaust hooks up to the CAT. If you used the machine pressed bolts in the CAT, it probably isn't on tight enough (speculation, but possible) as the stock machine pressed bolts are short.

Also, as a side note, make sure that you disconnect the battery for 10 minutes and then start it back up and let it idle for 15 minutes! It makes a difference just like intake. Although it may not solve your CEL.

Good luck man, and keep us updated.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rbf351 &raquo;</TD></TR><TR><TD CLASS="quote">

unless he unplugged the O2 on the cat, and forgot to plug it back in</TD></TR></TABLE>

I guess, but there's really no reason to touch the O2 sensor on a cat-back install. Anything's possible tho...

 

thanks guys, i didnt take it out for the install but im sure i did mess it up when i was getting the bolts out of the cat as you said they are a pain... i didnt think i had to have a defouler(in-fouler) because i dont have a race header or a test pipe. i am going to check the bolts tonight and look around the o2's to see if i can spot something wrong.

 

its still on and i checked the censors and checked and re-tightend all the bolts. oh well ill figure somthin out