Intermittent Starter Motor Noise

R

RustyZ4

Veteran
 Maidstone, Kent
Once in a while when I start the car, I get what can only be described as a "graunching" noise, it doesn't do it often, probably 3 times in 4 months, but I just wondered what it could be, the car is under BMW warranty and wondered if I should get them to check it out, or if this is a common problem with no issues,
Thanks in advance for any advice
 
Does it only make the noise when the car actually starts and you let go of the key or does it do it whilst turning over on the starter before it's fired?
 
RustyZ4 said:
Once in a while when I start the car, I get what can only be described as a "graunching" noise, it doesn't do it often, probably 3 times in 4 months, but I just wondered what it could be, the car is under BMW warranty and wondered if I should get them to check it out, or if this is a common problem with no issues,
Thanks in advance for any advice
Click to expand...

My 3.0si did this, it seems the starter can get coated in clutch dust which gums it up enough to graunch a bit (usually in cold weather)
Removal & cleaning is supposed to sort it out :thumbsup:
Rob
 
Yep.. see here https://z4-forum.com/forum/viewtopic.php?f=3&t=101308&p=1481386&hilit=starter#p1481386
 
ph001 said:
Does it only make the noise when the car actually starts and you let go of the key or does it do it whilst turning over on the starter before it's fired?
Click to expand...

It only does it from a cold start, and yes whilst turning over
 
ph001 said:
Yep.. see here https://z4-forum.com/forum/viewtopic.php?f=3&t=101308&p=1481386&hilit=starter#p1481386
Click to expand...

Thanks for that, I think as its under warranty I will get BMW to check it over for me :thumbsup:
 
ph001 said:
Does it only make the noise when the car actually starts and you let go of the key or does it do it whilst turning over on the starter before it's fired?
Click to expand...


It did it again last night, I actually noticed the noise it right at the end of start up, might be coincidence, but it always when its really cold out
 
At the end of start up the engine speed exceeds starter motor speed and the gear that engages the flywheel when you press start is thrown out of mesh. It lands against a spring on the shaft of the starter motor. May be a broken spring rattling??
 
mcbutler said:
At the end of start up the engine speed exceeds starter motor speed and the gear that engages the flywheel when you press start is thrown out of mesh. It lands against a spring on the shaft of the starter motor. May be a broken spring rattling??
Click to expand...

thanks mcbutler, going into the stealers tomorrow, ill se what they come up with
 
You must log in or register to reply here.
Back
Top Bottom