everything is fine on vehicule 2007 r56 n14 with p0327 code i have been replace head for carbone and new hpfp and new knock sensor and still the same code but i havnt put the toque wranch on 20nm the dealer said it is the sensor faulty and it coast me 300$ to replace the sensor and no idea this solve the issue. my question is what I absolutely need to torque at 20nm I do not want to put yet another sensor and that edm is the trouble. thanks

 

is the sensor plugged correctly? no corrosion at the plug?

buy a wrench for $20 and torque it. clear the code and see if it comes back.

finally,

if you slowly rev the car from 1k to 3k, do you hear knocking in the engine? how many miles do you have"?

 

230 000km i dont hear eng knock and the mini mechanic confirm too the eng is not knocking. the mecanics told me knock sensor do not produce any voltage. i suspect a known good edm but before buying a 2000$ thing i would be sure

 

A knock sensor should be less than 100$. It is fairly an easy job to replace. Before buying, make sure the plug is tight. Clear code and see if it comes back.

 

thank i will check torque on bolt ...
tow sensor for sale first at 15$ bosch 13-62-7-552-114-M14 the same i have already buy ang instal.. and second at 55$ genuine bmw 13-62-7-552-114-BOE what is the difference between these.. is they have same output signal !!

 

http://www.realoem.com/bmw/enUS/part...&q=13627552114

i think the difference is BMW will charge premium for the same product.

 

update i have change the knock sensor again and torque it with torque wranch but no result same f""""""""" thing.i have reset fuel trim and adaptation value.the engine does not knock
retrive code with snap on solus
code 2d9c knock sensor signal
code 2d50 eng ecu super knock
i will cut the wire and change it with other

 

What is the reason you had the know sensor light come on from beginning?

I bought a car with a fron end damage. After restoring, the MAF light kept coming back despite replacing it numerous times. At the end, i got my DME cloned and the light never came back.

In summery, if the wires were exposed and touched each other, the internal cicuit in the DME will be damaged. Cloning services are cheaper than dealer replacement.

Check on ebay for such.

 

DME cloned?? Please explain....

 

well, you buy a DME with a matching part number, you send it off to someone with your original DME. the tech will copy and paste software from original to "replacement" DME. now you have a cloned DME

 

the ligth come on last year at the end of summer when i had hpfp issue the car very hard to start after 4 hours of parking i have tryed sea foam treatment, spark plug change, and valve cover block to found trouble and after that the problem found is hpfp. i call brand new one in germay. the car is in the garage for winter i have change hpfp !!!!!yes that work the car start but still have knock sensor code with half power

 

I know this is an ancient thread, but my 07 MCS problem is exactly like what's described here. Does anyone know of a solution?

​New knock sensor, coils, plugs, rebuilt (by a reputable shop) HPFP, and intake valves have been walnut blasted, yet I immediately get P0327 and sometimes the super knock codes.

 

two thing remain to be checked. Either a mechanical issue with rod bearings or ecu has internal damage.

 

What is the procedure for actually checking those?

​​​​​​Send the DME off to be checked and if not that, it must be something internal with the engine?