Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)
Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie
Please note that it is not permitted to have referral links posted in your signature. Keep these links contained in the appropriate forum. Thank you.

https://www.boards.ie/discussion/2055940817/signature-rules
Hi there,
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest

Starter motor question..

  • 17-04-2009 2:56pm
    #1
    stifz
    Closed Accounts Posts: 315 ✭✭


    Starter motor has a connection to the + on battery and - is connected (earthed) to the engine itself. Theres no - connection back to the starter motor. Should there be one?

    Every now and then it won't start at all - no power what so ever. If i put a screw driver between the + cable and the engine block with ignition on it kicks over and then when i go to start it by ignition again it turns over fine..

    Is this an earth problem. Either a bad connection to engine block or do i need to route - cable back to starter?


Comments

  • #2
    crosstownk
    Registered Users, Registered Users 2 Posts: 12,863 ✭✭✭✭crosstownk


    stifz wrote: »
    Starter motor has a connection to the + on battery and - is connected (earthed) to the engine itself. Theres no - connection back to the starter motor. Should there be one?

    No. The battery -12VDC is connected to the chassis/engine. Basically anything metal on you car is -12VDC. There is no need for -12VDC in this instance.
    stifz wrote: »
    Every now and then it won't start at all - no power what so ever. If i put a screw driver between the + cable and the engine block with ignition on it kicks over and then when i go to start it by ignition again it turns over fine..

    Sounds weird - basically you are short circuiting the battery - could be quite dangerous.
    stifz wrote: »
    Is this an earth problem. Either a bad connection to engine block or do i need to route - cable back to starter?

    Check all earth straps from the battery to the engine and chassis. If necessary, remove them and clean them with fine sandpaper. Your problem maybe a sticky solenoid on your starter.
    Untitled Image




  • #3
    beam99
    Registered Users, Registered Users 2 Posts: 247 ✭✭beam99


    What make of car is it.


  • #4
    pred racer
    Registered Users, Registered Users 2 Posts: 4,384 ✭✭✭pred racer


    I presume you mean between the + terminal on the starter and the engine?
    The starter relay/solenoid is sticking (small round bit on the top of the starter) you can replace them. BTW the screwdriver method is well known in farming circles, half the tractors in the country are started that way;)


  • #5
    Muckie
    Registered Users, Registered Users 2 Posts: 1,763 ✭✭✭Muckie


    Sounds like the solenoid is fecked, most starters on modern cars

    have them attached to them, you might be able to get it

    re-conditioned, or chance buying a starter second from a breakers.


Advertisement