• Welcome, Guest! We hope you enjoy the excellent technical knowledge, event information and discussions that the BMW MOA forum provides. Some forum content will be hidden from you if you remain logged out. If you want to view all content, please click the 'Log in' button above and enter your BMW MOA username and password.

    If you are not an MOA member, why not take the time to join the club, so you can enjoy posting on the forum, the BMW Owners News magazine, and all of the discounts and benefits the BMW MOA offers?

91 k100lt - wont start - low hum

swbell

New member
I've heard of this before from this forum and now it has happened to me but I cant find the answer so I thought post and get responses. I start the cycle once every week or two and let it run for 20mins through the winter. I don't have a trickle charge -yeah I should get one. Anyways, yesterday when I went to start it I'm thinking my batt was low and now there is just this low hum like something is stuck (it had almost turned over and then I got this hum NOT like a click when there is a low batt) nothing else will happen just the hum. Is it a frozen starter? or something else...:scratch
 
DISCONNECT THE BATTERY!!!!

You must first determine if you have a weak battery. Repeated attempts to start with a weak battery will cause the contacts on the starter relay to weld together.

Remove it and FULLY charge it. Then have it load tested. If it tests good, recharge it and then reinstall it.

REMEMBER, when removing a battery, always disconnect the ground wire first, then the positive. When installing, connect positive first, then the ground.

If starter starts spinning as soon as you connect the battery, you have a stuck (welded) starter relay.



:dance:dance:dance
 
Back
Top