exhaust ques

[thunder_nick]

have a 92 2.5 twin turbo I am going to replace the exhaust from the downpipe back... when we were looking at it today we noticed just after the cat there is this sensor and the wires run into the body right by it.. it doesnt look like a regular o2 sensor so I was wondering if anyone knows of what it is.. and if it is somethig i can just eliminate or do i have to put it into the new pipe????
also someone was mentioning that the pipe could be a double walled pipe and was wondering if that was also true
thanks for the help

 

[noah89t]

could be a wide band sensor, but usually a guage is present in the car, unless it was hooked up to a computer

 

[annoyingrob]

could be a wide band sensor, but usually a guage is present in the car, unless it was hooked up to a computer

Your knowledge of JZA70s is teh fail!



It's an exhaust gas temperature sensor. It flashes a warning light if your cat starts to overheat. Yes, you can simply remove it with no ill effects.

 

[thunder_nick]

So I am getting my exhaust done tommorow and the shop thats doing it doesnt know what that sensor is and they think it might be an 02 sensor even thought i tell them its a sensor for the temp of the cat and what not and they want me to make sure first so i dont delete it and have some epic failure because i needed it..LOL. so can some more ppl for sure say its that sensor that rob was talkin about??

 

[projectsupra]

Yes he is correct, cat overheat sensor. Leaving it unplugged will leave the lamp off. If they need a third opinion to build a simple exhaust you need to find a new shop immediately.

 

[bluemkiii]

dude rob knows his stuff just take it out.

 

[thunder_nick]

yea I figured he was right .. I just wanted to make sure.. they arent doing the exhaust anymore we are doing it at my shop tommorow hopefully.. thanks for the help

 

[martin p]

Yep ,def for cat over heating, My 1G had one until i removed it! mine was in the rear of the cat, also you will notice that 1jz cats are slightly longer than 7m ones,

 

[annoyingrob]

Correct, 1JZ cats are 1" longer than 7M ones.

If the shop is worried about the sensor, cut the wires at your house, then drive there with it disconnected to show them that it doesn't change anything.

 

[thunder_nick]

so we did it ourselves at my shop we found time today to do it.. it sounds great but it is running rich now.. is this something that the computer will re-learn?? or is there something i can do to fix this??

 

[Rennat]

i would undo the ground cable on the battery to re-set the ecu so it has a fresh start.

 

[thunder_nick]

is there a set time to do that for like 30 min or something?

 

[Poodles]

or just pull the EFI fuse for a minute...

 

[Rennat]

pulling the efi fuse is the same as disconnecting the ground?????

 

[Poodles]

It resets the ECU, which is what you're wanting to do. (yes it's in the TSRM)