Cat Temp Sensor Waring Light Help

[Bigdogg]

Hi new to this my car is on the stuck on the side of the road and it won't start the cat temp sensor warning light keeps coming on when I go to start the car I had no warning of it at all if any can help me please

[mad082]

Cat temp sensor will have little to do with your issue. It is a common fault (faulty wiring or sensor). Most people get rid of the sensor.

[Bigdogg]

Thanks mate how do u take the sensor out thank heaps

[89CAL]

Perhaps you have a blocked cat and this is what the sensor is telling you?

Wouldnt expect it to just all of a sudden block and cause the car not to start at all.

The sensor just unscrews from the cat. Mine still works (AFAIK anyway)

[mad082]

I left the sensor in mine and just cut the wires. My cat temp light would come on as soon as I turned the ignition on (before even starting the car) on cold winter mornings.

[89CAL]

Mine seems to work properly. Comes on for a second when I turn the key then goes out. Dont think ive ever seen it come on

[Bigdogg]

Hey ive cut the wire to the sensor and it done nothing now the warning light stays on and I still cant start my car dont know what to do

[niZmO_Man]

Cat temp sensor will have little to do with your issue. It is a common fault (faulty wiring or sensor). Most people get rid of the sensor.

[Got a Pulsar]

The sensor only makes the warning light come on on the dash, it doesn't send any signal to the ECU.

I changed my fried cat and couldn't get the sensor out so I just cut it and blocked the hole in the new cat with a bolt.

The light comes on and goes out when the car is started.

Your cat may be blocked, or your not starting problem could be totally unrelated...

Try removing the cat and starting the car, if it starts, smash the guts out of your cat, reinstall and buy a new cat ASAP.

[Landyy]

Same problem with my car .

My car runs and drives fine tho,but the car wont idle for more than 5mins even after a drive and the owner told me the cat temp is not plugged in thats why its causing it to automatically shutdown or theres more to it than that? & the temp light is always on.

thats the light thats always on

any help would be great.

[89CAL]

Its just a light AFAIK. It doesnt send a signal to the ecu. Maybe it is still plugged in and not working or maybe the wires are joimed (assumimg it is NO)

[jiffo]

Yes that's my understanding of the R33 too.

In an R32 the cat over temp light is the check engine light so it does connect to the ecu for that purpose.

Can't understand people hacking wires.

Under the passenger seat you can UNPLUG the cat sensor wiring, no need for butchery.

Fit a grommet in the floor pan hole and it's looking good.

[mad082]

From memory I only cut mine after I unplugged it, in order to get the wires out of the car when I removed the sensor when I got a new cat. It was about 6 years ago now, so my memory is a bit vague

[Landyy]

ohkay

so can someone explain to me why the car won't idle for more than 5 mins or thats the reason?

[89CAL]

you'll have to provide more info then that

mods

what do you mean by wont idle (hunts around, idles really low, etc)

etc....

[Landyy]

Well mods on the

-Full 3" exhaust

-Fuel pump

-pod filter

-TS boost T

stock everything.

idles fine n drives n sounds fine! But if i start the car let it idle it just won't idle for longer than 5mins its the same even after a drive it automatically turns off the car

But all electronics are on all i have to do is turn the key to the right n it starts again fine.

[Got a Pulsar]

Is the 5 mins approx or exact? Doesn't have a (hidden) turbo timer does it?

[scotty nm35]

Try hard wiring the fuel pump using the 'how to', most aftermarket pumps don't like the low power supplied by the factory fuel pump controller. To test it you could run a temporary wire to the battery...

What pump did you install?

[Landyy]

well this morning i started up to see how long it will run for

it ran for 12mins n could of kept going so believe it or not it didnt happen today

when i came back from work,it usually runs for a bit n shuts down this time it ran for a while till i got bored like wtf

i bought the car with the fuel pump already installed.the last owner put it in and he said it holds up to 600hp i believe

Brand- no idea

i'll ask for details coz he said he would fix the shutting down problem anyway.

since he said its cat being unplugged,now i know its not im not happpy

[89CAL]

Reset the ECU. Quick to do and sometimes solves the problems.

Disconnect battery (negative terminal), Hold foot on brakes, flick lights on and off etc, basically just do whatever you can to drain any residual power.

Wait for 10 mins or so then plug the battery back in and start the car, go for a drive etc.

I'm not sure if the 10 mins of sitting is necessary but just to be sure