Exhaust Temp Light

[FORZA-MOTORSPORT]

Hi Guys got my car dynoed then i noticed engine light was coming on around 4,500rpm rang dyno guy and he said it was afm maxing out and nothing to worry about. Now i checked and was only getting 35 knock max so obviously its not pinging, then last night i noticed that the engine light wasnt coming on anymore and that instead the exhaust temperature light ( the one with the picture of a cat with waves going over it) was coming on instead?? I was running some extra octane boost.

[T04GTR]

you cat is melted

[FORZA-MOTORSPORT]

you cat is melted

LOL i have a de-cat!

[Rolls]

Just means the sensor where the cat is is very very hot. Usually happens after you give the car a good caining in the hills, at least I know mine did.

[FORZA-MOTORSPORT]

That sensor i disconnected from the decat ages ago so im confused? Does the power fc use that symbol to warn for anything else?

[N1GTR]

Just means the sensor where the cat is is very very hot. Usually happens after you give the car a good caining in the hills, at least I know mine did.

Mine does the same thing but only after a LOT of punishment in 1st/2nd gear sort of areas if that helps?

[FORZA-MOTORSPORT]

Well im not totally convinced, last time the engine light stopped and that one started a week later my headgasket blew :S

[Rolls]

Well im not totally convinced, last time the engine light stopped and that one started a week later my headgasket blew : S

we were talking about the exhaust/cat sensor

[FORZA-MOTORSPORT]

Yes Exhaust overheating sensor, does anyone know if this serves any other function with the power fc?

[DVS JEZ]

i would like to know as well. mine does the same thing. only when it wants to after a quick squirt.

[FORZA-MOTORSPORT]

Surely some must know the answer? Can this cause any damage and EXACTLY what does it mean?

[The Dan]

The power FC uses it as a warning light.

I will try to find out what it means, stay tuned

[FORZA-MOTORSPORT]

Ok thanks mate, weird thing is it came on as soon as i took my 4wd fuse out and put my car in rwd then i gave her some and it started to flash, i put the fuse back in and she still comes on, only thing i can think is that some how the sensor got knocked off the bottom of the car where i had tucked it in.

I adding the octane boost as i filled up with crap caltex fuel and my car started to hit 70 knock so i thought it make a diffence which it did, never using that fuel again!

[The Dan]

Ok I believe it is a knock warning. I think you have some kind of knock warning level set in the PFC. You can change it with the datalogit software but it shouldn't display that exhaust temp light until knock of about 50 or 60.

[FORZA-MOTORSPORT]

How come my knock level is only 35 max now and it still comes on?? Like i said before weird thing is the engine check light below it isnt coming on anymore...

[The Dan]

I don't know for certain that it is that but I have seen it a couple of times and it is usually in conjunction with excessive levels of knock. The PFC manual does not say anything about it.

[FORZA-MOTORSPORT]

Ok thanks mate for your help, ill just take it easy till i get it bak to the dyno place, last time i had these lights coming on i blew the headgasket into pieces... which seems to suggest knocking/pinging

[The Dan]

Does the POWERFC have an error code function?

[paulr33]

ok you need to be clear on which one you are talking about

engine check light

or

exhaust temp light

your topic says exhaust temp and the content says engine check light

engine check light - orange engine icon

ehaust temp light - red box with squiggly lines

engine check light

used by powerfc to indicate;

airflow meter maxing out

injectors maxing out

knock exceeded 60

the powerfc faq tells you how to diagnose and check for all 3 items and how to disable/enable them

exhaust temp light;

used by powerfc to indicate;

exhaust cat is too hot

either disable the sensor or get the cat checked (could be blocked)

[FORZA-MOTORSPORT]

It is the exhaust temp one im talking about, i have a de cat and the sensor is not plugged in and it wasnt flashing before.

There is also a red light under the cat over heating light what is that light for thats the one which was coming on before the exhaust temp one did?