new muffler smoking

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jonnywong

NAXJA Forum User

Location

upstate NY

• Mar 30, 2009

• #1

Hey guys quick question. Just installed a new muffler (cat back) and the install went smooth but now im seeing some smoke come from it after it heats up. Everything seems to run fine but after about 5 minutes or so, or whenever i really push the jeep, the muffler will start to smoke out of the seams and tailpipe. Didint have this problem before installing the muffler. The check engine light also comes on after a few minutes which may or may not be related. I used copper RTV on the adapter fitting in front of the muffler - but this is high temp and shouldnt burn up right?

'95 4.0

 

IslanderOffRoad

NAXJA Forum User

NAXJA Member

Location

Houston, Tx

• Mar 30, 2009

• #2

You'll get some junk burning out of the new pipes and muffler for a day or so.

 

-96JeepSpeed-

NAXJA Forum User

Location

Tweaker Valley CA. (Spring Valley)

• Mar 30, 2009

• #3

Mkae your 02 sensors are plugged in. Every muffler iv put on a new muffler they gave me that new muffler smell, Just the new paint being burnt.

 

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wishihad1

NAXJA Forum User

Location

charlottesville, VA

• Mar 30, 2009

• #4

they put a light coat of oil on them from the factory to keep them from rusting. completely normal

 

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jonnywong

NAXJA Forum User

Location

upstate NY

• Mar 30, 2009

• #5

thats what i was hoping to hear. also, any idea why the check engine light would go on after it warms up?? i have no code reader so i can really only guess maybe a bad o2 sensor.

 

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lawsoncl

NAXJA Forum User

Location

North Idaho

• Mar 31, 2009

• #6

Do the key-on-off trick and pull the codes yourself.
http://www.jedi.com/obiwan/jeep/dtc.html

 

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jonnywong

NAXJA Forum User

Location

upstate NY

• Mar 31, 2009

• #7

ill give it a shot, but how will i pull codes when the check engine light only comes on after a few minutes of driving? seems like the only way i can pull the code is if the check engine light is there immediately at start up...

 

J

jonnywong

NAXJA Forum User

Location

upstate NY

• Mar 31, 2009

• #8

Nevermind im an idiot...i see they are recorded. which gave me codes 12, 15, and 55...meaning i really just need to figure out wtf is wrong with the speedometer.

 

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j99xj

NAXJA Forum User

Location

Colorado Springs, CO, USA

• Mar 31, 2009

• #9

Mine did the same. Except that it was from a tag/sticker on the tailpipe.

 

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lawsoncl

NAXJA Forum User

Location

North Idaho

• Apr 1, 2009

• #10

jonnywong said:

Nevermind im an idiot...i see they are recorded. which gave me codes 12, 15, and 55...meaning i really just need to figure out wtf is wrong with the speedometer.

Click to expand...

Nope not an idiot, as that implies an inability to learn. I prefer temporarily ignorant, meaning you just didn't know at the time but figured it out. :}

So is the speedo reading correctly? I'm wondering if you hit the wiring to the speed sensor in the xfer case when you were doing the tranny work? If you had the sensor pulled out, it may not be clocked correctly. It needs to go in in a certain orientation depending on what speedo gear is installed.

 

J

jonnywong

NAXJA Forum User

Location

upstate NY

• Apr 3, 2009

• #11

i did tear pretty much the entire tcase apart but dont really remember much about the speedo - it wasnt giving me any problems originally. I guess ill unplug it and see if anythings loose or looks funny in there, although not really sure what to look for. it is quite possible the orientations off, ill take a look tomarrow.