wtf is the sensor in the r33 cat??

[Bo0sT_JuNkY]

I was looking at my cat the other day, and i noticed that there is a sensor in the cat,i think its a secondary 02sensor.Anyway its been weld to the cat so if it is a 02 then im guess that it would be stuffed after the heat of being welded.Where can i get new 1 and whats it there 4.

[Bo0sT_JuNkY]

Also my car has been making gay power to mods ratio.

[raist60]

Temperature sensor for the CAT warning light in cluster.

[Bo0sT_JuNkY]

Does it affect performance at all? Ive had that light come up a few times on my dash.

[fatz]

***** meter

measure how much cat you have

pete

[Bo0sT_JuNkY]

Originally posted by fatz

***** meter

measure you much cat you have

pete

Man i dont no wtf u just said:rolleyes:

[SteveL]

Originally posted by Bo0sT_JuNkY

Does it affect performance at all? Ive had that light come up a few times on my dash.

No, just tells you your cats a bit hot.

[Bo0sT_JuNkY]

sweet,Then thats one thing off the list.

[Craved]

never seen the light in the cluster, whats it look like?

[GTS-t VSPEC]

It's an over-temp sensor, I have removed mine from the cat, as I have no cat, and it hasn't had any impact on the car, but I am running aftermarket management.

[Bo0sT_JuNkY]

its like a muffler with lines going through it ,its red

[Guest RedLineGTR]

changed my cat to a high flow one didnt have a hole for it...chucked it in a hole near the exhaust and with a zip tie. Nothin wrong works fine. eh

[Zensoku]

The EGT sensor illuminates a warning light which looks like a side view of the catalytic converter with wavey heat lines coming off the top of it (looks more like a BBQ!) It will illuminate when the temperature has reached around 850 degree celcius. This is very hot, and is usually due to either driving the car very hard continuously (ie: around a race track) or if driving normally is due to an extremely lean engine conditions (not good! perhaps a lazy fuel pump?)

This doesn't affect the operations of the ECU, but serves its purpose to help protect both the turbo from excessive heat (ceramic turbines in particular) from high temp failure and also to help the Platinum Rhodium material in the catalytic converter from being heat damaged.

Heat damage reduces the cat's ability to convert carbon monoxide and other poisonous gases back to a safe (and legal) emissions standards. Most cats don't work too well after 80,000km's anyway, from what i've been told.

If you ignore the warning light, then i think you'd be taking a blind eye to a possible engine problem if the light come on when you were just driving around normally (ie: not doing laps on a track)

[DJ_L3ThAL]

hmm, maybe ill check if they hooked mine up when i went a high flow cat... hmm but then again im running a powerfc

[Bo0sT_JuNkY]

My car hardly ever get's drivin slow,im always flying around in it.That's why ive lost my licence for 6 months. It wasnt running that lean,i had it dynoed .That's why i was thinking a faulty sensor.

[ron]

lost your license? haha your an idiot.

if you stop flying around all the time it would help you know?!!

i see that your car is an auto? what mods u got and what sort of power?

ron

[Zensoku]

Hmm, could be a faulty EGT sensor, but i still think that it could be indicating an engine that is running a bit too lean. I hear stories from a dyno operator i know here that sees cars that come in every day that have been so called "tuned" or "dynoed" that run extremely lean in the quest to extract as much power as possible. He says that some performance shops tune the cars so aggressively to extract as much power as possible to impress their customers, when in reality it's better to tune conservatively on a street car taking into consideration different qualities of fuel from batch to batch, different ambient temps, etc, etc. Too many variables to consider, and you should be factoring in some reliability into the engine with some form of thermal control. (A bit richer from Stoichiometric)

Anyway, i'm rambling again, get it looked into! At least check your fuel pressure and A/F ratios, as a EGT warning is a rare instance on a street car, i'm told.

[Bo0sT_JuNkY]

um mods where safc,fmic,9psi,hks filter hi flow muffler. 212hp or round there.They told me my exhaust is causing issue's.I think the fuel pump is stuffed to.Seeings im not driving it im saving heaps of cash and im getting 3inch turbo back exhaust,255lpr pump,malapasi reg,To4e,plenum modified like a gtr style.Cause i think the turbo is a bit tired.Ill see how that runs if it still unpowerd then wolf3d,injectors,manual.I do alot of my mods myself (still building 327hp sohc vtec civic,time for body work:)

[clarkey]

My sensor was cable tied (eg. not connected) to the chassis of the car and the light in the cluster still came on every now and again. How can this happen?

[Jase]

I get the same light coming on generally when going down long hills under no load!