squeak sound from engine bay - The Unofficial BMW M5 Messageboard (m5board.com)

M-POWER 77 · 6th November 2009, 22:15

Hi guys i wonder if any one encountered my situation, one week ago i started to hear low squeak sound from the engine bay, like a squeaky belt it only occur on idle and weirdly the sound go when i rev it, meaning it doesn't get louder by revving the engine, even when on idle i only can hear it from outside the car and once i step inside i cant hear it anymore. the car drives fine.

i suspect its my pulley since i have Rouge engineering power pulley however i had it since one year ago without any probe, could it be that the pulley gave up now?!! im nervoues now because i dont want the situation to get bigger. appreciate your thoughts.

Ahmed · 6th November 2009, 22:26

I hope you have spare pulley belt?

M-POWER 77 · 6th November 2009, 23:13

i dont think the belt is bad, maybe loss i didn't drove more than 10k-12k KM on the pulley.

M-POWER 77 · 7th November 2009, 08:50

would love to hear expert opinions guys! rpi, asr, any tuners on why this happens, thanks.

M-POWER 77 · 9th November 2009, 13:57

guys, dont know really if your interested in updates regarding this issue, seems not alot feedback other than Ahmed anyway

i took it to bmw mechanic to inspect it, he suspect belt tensioner is fault!!!

what is this part suppose to do? seems alot of $$$ already! any way i took the car since he told me you can drive it with no issues except the sound though.

my second service is in 4000km shall i wait or do it now? thanks

M-POWER 77 · 12th November 2009, 15:25

once more update for the concerned m5 community, car was in workshop since yesterday got a call today telling me that RE supplied belt with there pulley kit installed one year ago is in sever bad shape. the mechanic told me the quality of the belt is so bad and can't believe such thing can go on a bmw let alon high revving m5 engine.

i hope RE hear about this and change their belt supplier for a better one.

for now he will replace it with a better quality one and hope things get back to normal.

wish me luck.

ur20v · 12th November 2009, 17:13

Glad your getting to the bottom of it!

Jay

Ahmed · 12th November 2009, 22:59

You are always welcome to ask me bro, cause I've been though almost every possible problem an M5 could have since 2003.

I had this problem with my Rogue Eng pulley on the E39 and i ordered two sets. Thats why they are called "rogue"

M-POWER 77 · 12th November 2009, 23:51

Thanks ur20v & ahmed, well the squeak sound on idle is gone but only to be replaced by knocking noise when applying throttle on takeoff or while in N, the mechanic told me they couldn't find same size belt so they replaced it with one littile bigger in size, car runs fine no hesitation , CEL light or limp mode, but the knocking was noticed upon arriving home and i got frustrated, car is parked for now till saturday morning im sick with this situation, will re install the stock pulley and belt if sound still there will take it to stealer.

Ahmed · 13th November 2009, 05:50

Quote:

Originally Posted by M-POWER 77

Thanks ur20v & ahmed, well the squeak sound on idle is gone but only to be replaced by knocking noise when applying throttle on takeoff or while in N, the mechanic told me they couldn't find same size belt so they replaced it with one littile bigger in size, car runs fine no hesitation , CEL light or limp mode, but the knocking was noticed upon arriving home and i got frustrated, car is parked for now till saturday morning im sick with this situation, will re install the stock pulley and belt if sound still there will take it to stealer.

Wise decision habiby... now go and order the Evosport or Rpi pulley... there are tons of used ones on teh classified section. Or you can just order new belts for the RE.

Good luck bro!