cant find this TBS for pathfinder need help
system[/img] THANKS but do you know what the TBS was fopr on the front tube pipe.TBS on the Exhaust tube TSB #04092 and also I glad to hear they aren't the catalytic's . just what do they doyeldogt wrote:If you are speaking of the two oval cylinders under the front seats -- they are not Catalytic Converters. The TSB on that part was to apply a sealant and two clamps -- it did not hold up.
The proper way to fix those is to remove them and weld the side seams -- if they had the sealant done at some point ... they most likely can not be welded due to the sealant contaminating the area to be welded. My first one was fixed by the dealer so I had to replace both of them -- my subsequent Pathfinders were fixed by welding the sides and they never leaked again.
The exhaust is a weak spot on the vehicle. All of mine required some cutting and welding to fix damaged pipes -- I tried to keep the OE system in them as long as possible, but eventually the rust gets to the muffler and resonator. The parts are cheap -- under $200.00 for the back sections ... if you have to replace the two oval parts they adds another $150.00 or so -- and you have to remove the O2 sensors. The aftermarket stuff is not SS and does not last as long.
[img][img][/img][/img] Thanks , I always thought those little oval like mufflers were the converters under the drivers seat. but I see yo have the real converters up father, are they made of thin meatle or thick cast? wish I had a picture of one , I wonder if that's where I still hear a slight put put noise leak. and could I get some HIgh heat JB weld on them with out welding them?QX4ME wrote:A few year ago Infiniti dealer had a complimentary inspections on my 2002 QX4, and found a few things needing repair. One of them is the left side exhaust leakage. I ignored it and passed smog check every time. This year the smog guy went under the truck and found the leak so I failed the smog check. An independent shop showed me where the left side leak is, right on the converter seam. I can feel air coming out of there. The right side also had leak but not as bad. They welded both sides for $120. Now when I start the car it is so quiet, not any more loud "vroom". Since leak is a gradual thing over 14 years I didn't notice, thinking it is like that, can't compare to Toyota (Lexus) quietness.
Before and after the repair it is like day and night.
gee that's a god thing if those are replaceable with straight pipes I could run a piece of pipe there and get rid of those things that I now have patched up but if they leak in the future do it only. I still here a puff putt leak noise upward toward the front . maybe the real catalyst's are one is leaking a bit? oh what about those sensors I noticed are just before those resonators , if I put a straight pipe will it effect those sensors?yeldogt wrote:Qx4me: They are not converters ... the converters are further forward closer to the engine. I know they look like converters -- people call them converters .. but ...they are resonators.
The OE parts are very expensive -- you did the correct thing fixing the OE part. The aftermarket replacements are straight pipes and the sound changes after installation
if you remove those 02 sensors will it still pass inspection? wont the engine light come on?yeldogt wrote:If you are speaking of the two oval cylinders under the front seats -- they are not Catalytic Converters. The TSB on that part was to apply a sealant and two clamps -- it did not hold up.
The proper way to fix those is to remove them and weld the side seams -- if they had the sealant done at some point ... they most likely can not be welded due to the sealant contaminating the area to be welded. My first one was fixed by the dealer so I had to replace both of them -- my subsequent Pathfinders were fixed by welding the sides and they never leaked again.
The exhaust is a weak spot on the vehicle. All of mine required some cutting and welding to fix damaged pipes -- I tried to keep the OE system in them as long as possible, but eventually the rust gets to the muffler and resonator. The parts are cheap -- under $200.00 for the back sections ... if you have to replace the two oval parts they adds another $150.00 or so -- and you have to remove the O2 sensors. The aftermarket stuff is not SS and does not last as long.
