knocking sensor / FAO Tom

[sven]

Tom, or anyone else, can U please tell me what does a "knocking sensor" do on a 1.4 engine.
Is it related whit the fuel consumption, or ?

Thanks

sven

 

[Tom]

It detects pinking and the ECU adjusts the timing.

 

[Anonymous]

pinking = a rattling noise on acceleration with low revs

So if Im correct, it adjusts the time when the plugs should "fire".


sven

 

[Tom]

No, pinking and rattling are different Rattling at low revs under acceleration is usually worn bearings. Pinking most often happens at low throttle when the engine runs most lean.

 

[Anonymous]

Call me stupid, but I dont get it
Newer mind, so it can influance the mpg of the car, or does it just smooth down the engine work ?

Sven

 

[Tom]

If something is very wrong with the engine or the sensor the timing will be way out and the engine will loose power and MPG. But you do normally get a noticable loss of power.

 

[Mick]

i heard a rattling noise coming from mine the other day i had accelerated hard lifted off and as i lifted off i heard a rattle/clattering noise as the engine wound down. could it be my knock sensor is tits?

 

[Anonymous]

No. Something else!