BMW Questions? Ask a BMW Repair Expert for Answers.
My name is ***** ***** I am a professional here at Just Answer. I noticed that your question had not received a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.
Inspect the area where the belt came off and see if the belt had damaged any electronics like a crank sensor or any other engine sensors or wiring.I have seen before where wiring or electrical components are damaged due to the belt coming loose and will cause this issue here.If this was already checked and found to be o.k. let me know so we can continue.
If more help is needed, use the reply tab to continue our conversation. If no further assistance is needed, kindly rate my service.You can rate at any time and we can continue to work on your question as this will not close out your question.Keep in mind in some cases it can be difficult to fully diagnose or help repair your vehicle without seeing it and I work on delivering the best possible answer from what I see to work with.Thanks Pete.
The crank sensor should be located at the back of the engine towards where the transmission bolts up.Did you check to see if any fault codes sure set at all using a scan tool that will plug in and communicate with all computers?If so what codes are set?
This is definitely a difficult question for me to answer fully myself from here.I will have to open your question up for others here to see if anyone else can assist further on this.I hope you can get this resolved with ease.
Have you tried a hard reset?
IF the harmonic didnt damage anything when it cam off, im wondering if it jusst threw the modules into a lock or sleep mode.
I have had a few bmr's solve some strange issues like this just by reseting the entire computer system.
just disconnect the battery cables and join them together for about 5 minutes.
This will reset the ecm and hopfully get you going.
Its a $0 cost shot.
let me know
And sorry, but kind of a silly question, but the oil level is fine right? lol
Im amazed at some of the weird problems this has solved on most german cars in the past. for what it costs ($0) its worth a try.
make sure to leave cables connected for a good 5 mins
sorry for the late reply, i was doing some searching and speraking to a few other techs.
The weird part is this did this after the harmonic came of, Its possible that something might have gone internal because of it.
I dont think i can help any further, I appologize for that.
Im sure you want to get to the bottom of this so im going to opt out, and im hoping a beamer tech will see than and point you in the right direction.
Good luck and if you can please give me a pm to let me know what you found.
thanks again for trying the hard reset.