Knock Sensor/Heat Light

AndyGen3 · April 12, 2007, 01:14:24 PM

Damn it mines on 2... Only since i got it back from Dragon...

Will have to suss it out tonight... Dont wanna wreck the engine...

nikp · April 12, 2007, 04:17:03 PM

Quote from: AndyGen3Damn it mines on 2... Only since i got it back from Dragon...

Will have to suss it out tonight... Dont wanna wreck the engine...

Whats on 2? :3Confused

AndyGen3 · April 12, 2007, 04:19:57 PM

Quote from: nikpWhats on 2? :3Confused

The cat heat light... Wudnt mind i was bootin it back to make the boat and the car died and wudnt boost... Had to get the AA to bring me home..

This could be part of the problem...

When your checking the sensors will the circles be black or white if theres something wrong???

nikp · April 12, 2007, 04:23:13 PM

No circles denote whether the switch is on or not (\'white\' circle is off, black is on). If the whole thing is highlighted in black, then it denotes the sensor/switch as bust.

A knock of 2 is very good. However, you would probably expect it to move a bit (If you look on the graph of it). I\'m not an expert on failed knock sensors, but my understanding of them is that often they give wildly high readings when they fail as opposed to low readings.

AndyGen3 · April 12, 2007, 05:12:02 PM

haha i wasnt talkin about the knock i meant my cat light is on too "2" text speak sorry...

Highest ive seen my knock is over 200!! So i dont think it works very well...:p

nikp · April 12, 2007, 06:44:38 PM

Oh.....ok. I\'m not very good with text talk. High knocks on the apexi can mean anything. Especially with old knock sensors. If you\'re worried, it might be worth getting it checked out.

yamaster · April 12, 2007, 06:57:14 PM

my heat light came on there on the way home from work. it comes on when its decelerasting and is poping alot more.. as soon as i accelerate it goes of??? the tick over is also higher at about 1100rpm. anyidea what this could be??

the car is decated

RobbieRX-7 · April 12, 2007, 07:21:46 PM

Has anyone sucessfully removed the cat and and managed to make the heat light go off? I know some people put the sensor under the seat but thats not an option for me because mine broke when removing the cat from the car.. I read that a resistor does the trick. Has anyone done this?

Carl · April 12, 2007, 09:13:47 PM

Quote from: yamastermy heat light came on there on the way home from work. it comes on when its decelerasting and is poping alot more.. as soon as i accelerate it goes of??? the tick over is also higher at about 1100rpm. anyidea what this could be??

the car is decated

Hi Shane,
drop the rpm on the idle screw.Should be about 900 rpm when warm.
Regards
Carl

Carl · April 12, 2007, 09:16:16 PM

Quote from: RobbieRX-7Has anyone sucessfully removed the cat and and managed to make the heat light go off? I know some people put the sensor under the seat but thats not an option for me because mine broke when removing the cat from the car.. I read that a resistor does the trick. Has anyone done this?

Hi Robbie,
It is an easy fix.
Under the drivers seat there is the wiring that goes to the sensor under the car.
Just disconnect the connector,and then cut the two wires and solder them to gether,then tape up with electrical tape.
That removes the constant on of the heat light for the cat,but you still get any other warning flashes.
Regards
Carl

Carl · April 12, 2007, 09:19:02 PM

You can get high knock readings if the engine is low on compression,or it can be due to something like the power steering pump getting rattly.Sometimes sensors need changing.
If the knock is high on overrun then you have no worries,but if it comes on under hard acceleration then that can be a worry.
Regards
Carl

RobbieRX-7 · April 12, 2007, 09:33:17 PM

Cheers carl. Your always giving out sound advice, much appreciated:cheers