Ecu Error: Knock Sensor Signal?

[Rekin]

Hey,

My car has been playing up recently, where if i leave the car to idle for a while after driving. The revs drop and it starts to splutter, with the idle moving up and down and car acting all funny.

Once i start moving and accelerating everything is fine.

Connected a ecu diagnosis tool and an error came up;

34: Knock sensor signal

I have a stock ecu, Where is the knock sensor located? How much it cost to replace? Is there a part number?

Thanks all

[ali-turko]

knock sensors are located under cylinder 3 and 5, to get the rear one off the starter motor has to come off.

and pm femno bout the knock sensors he gets them for a good price

[Rekin]

knock sensors are located under cylinder 3 and 5, to get the rear one off the starter motor has to come off.

and pm femno bout the knock sensors he gets them for a good price

Thanks for the quick reply

Would faulty knock sensors cause the car to splutter and erratic idle on idle?

I read somewhere that the knock sensors switch the map to safemode to protect engine.

If its switching between maps, this could be causing the spluttering?

[ali-turko]

i mean cylinder 2 not 3 and yes the can make your car run like shit, i just fixed the same problem on my car

[battery]

yeh i had the same problem.

couldn't be bothered fixing the sensor so did a resistor mod, basically you put a 1M ohm resistor between the knock sensor wire and ground, it fools the ecu into thinking the sensor is fine.

i can give you more details if you want, ecu pinouts etc.....

[Rekin]

From GTR.co.uk;

right at the top of the block under where the head meets the block, 8" apart.

very difficult to get to and remove with engine in place..look under the plenum at the block as above. they have a black plug on them..