RB20 Diagnostics result (knock sensor) questions

[Cool Hand Luke]

I ran the diagnostics on my ecu and it came back with 2. 34 and 54 which are 34:Knock sensor and 54: auto send to ecu or something... 54 is explainable because there is no auto on it anymore. How much will it cost for a new knock sensor, and where is it on the engine so i can change it? Is there just one?

[blind_elk]

There are 2, under the inlet manifold, near #2 and #5 cylinder positions.

It may only be a broken wire. Or not plugged in.

[Cool Hand Luke]

Are the knock sensors on the RB20 the same as the RB30? Just hard to get parts for it otherwise

[Cubes]

If it shows up as an error doesn't it mean that the ECU has been receiving knocks? Hence the motor has been knocking/pinging.

[WazR32GTSt]

hey i also showed up code 34: knock sensor... so this applies to me as well

what does the knock sensor look like? i'm pretty sure i have no knock / pinging but it shows up knock sensor in the diagnostics

i would have thought this means the sensor is stuffed rather than the engine is knocking... anyone know for sure?

[J.B.E]

when you put your car in diagnostic mode, as far as i know it's job is to report faults or faulty parts and not to tell you your car is pinging or knocking so either your cars sensor needs replacing or theres a fault in the connection somewhere.

[Roy]

My thing is giving the same fault, im all excited that this may be the reason why my car is overly laggy... had a quick go at reaching the knock sensor, but it appears to be a job requiring jacking up the car and accessing them from the underside of the car

So whats the go, remove the sensor, clean and with some terminal cleaner etc and re-install, or does it typically mean the sensor is faulty.

[blind_elk]

Removing the plug from the knock sensor is similar to opening a bottle of metho - you need to squeeze the plastic cover in the right place to let it release the "catch". Then the connector simply slides off.

Your problem is probably that the connector is loose, and making an intermittent connection. (The error is due to a short or disconnection of the wire, not from the fact that the engine has "pinged")

[WazR32GTSt]

talk about bringing up an old thread...

my knock sensors were unplugged when i showed up that error code and i jsut plugged them back in!

[Roy]

Did it change the way the car drives at all?

[WazR32GTSt]

most definately

before hand there was a flat sopt when the car was cold - gone when i plugged in the sensors

also before i re-plugged them it used to hesitate above about 5000rpm but that is also gone now that i plugged them in

[Defective]

sorry to bring up this thread but my cars showing this code so i was just wondering if anyone else has had this code if it amde the car run super rich?