Help! starter motor problems!

1. iSlayeR Established Member Joined: Aug 2009 King's lynn Posts: 2073 Turbocharged vtr

   #1 3rd February 2015, 13:05

   Went to start the car this morning, starter motor worked fine, now it's not, I just get fast clicking sounds now, I've had the starter motor off, tried another one, and bench tested both, both spin fast, checked all earths, and lives to the starter and battery.
2. user_20080 Saxperience Hardcore! Joined: Dec 2007 smurfland. Posts: 17346 Ex saxo owner.

   #2 3rd February 2015, 13:22

   http://pmmonline.co.uk/technical/sta...ths-and-truths scroll down to myth 3.

   1 user thanked this post: iSlayeR
3. iSlayeR Established Member Joined: Aug 2009 King's lynn Posts: 2073 Turbocharged vtr

   #3 3rd February 2015, 15:19

   I just tried jumper cables on the starter to ensure a good ground and live, straight to the battery, still just get clicking, but with the starter removed and bench tested it will spin fast,
   
   Do you think it could be the ignition switch at fault then?
4. iSlayeR Established Member Joined: Aug 2009 King's lynn Posts: 2073 Turbocharged vtr

   #4 3rd February 2015, 16:53

   edit: just did a bench test with it still on the car, lived and earthed with jumper cables straight to a battery, then bridged the solenoid, made the same sound when tried with the key.
5. user_20080 Saxperience Hardcore! Joined: Dec 2007 smurfland. Posts: 17346 Ex saxo owner.

   #5 3rd February 2015, 17:35

   I think you have an exhausted battery,charge it up overnight.double check all of the connections to starter,it's not uncommon for connectors to become corroded.
6. iSlayeR Established Member Joined: Aug 2009 King's lynn Posts: 2073 Turbocharged vtr

   #6 3rd February 2015, 18:37

   Quote:

   Originally Posted by stevo67 I think you have an exhausted battery,charge it up overnight.double check all of the connections to starter,it's not uncommon for connectors to become corroded.

   I have a reading of 12.65 volts on the battery, had another go at bridging the connections, listened carefully, I can hear the pinion like it's hitting the flywheel but not actually spinning it.
7. iSlayeR Established Member Joined: Aug 2009 King's lynn Posts: 2073 Turbocharged vtr

   #7 3rd February 2015, 19:29

   ok so I've just used a fully charged battery not on the car, with jumper cables to the live on the starter and grounded it, then bridged the live to the ignition switch wiring on the starter, still same thing happens? really confused now.
8. user_20080 Saxperience Hardcore! Joined: Dec 2007 smurfland. Posts: 17346 Ex saxo owner.

   #8 3rd February 2015, 20:05

   Right what's the starter cog teeth like?if the solenoid is pushing the cog out and the teeth are in good condition,then the flywheel would be my next port of call.
9. iSlayeR Established Member Joined: Aug 2009 King's lynn Posts: 2073 Turbocharged vtr

   #9 3rd February 2015, 20:34

   Quote:

   Originally Posted by stevo67 Right what's the starter cog teeth like?if the solenoid is pushing the cog out and the teeth are in good condition,then the flywheel would be my next port of call.

   Cog looked fine, it's too dark to take it off again, but I've done a few more tests with my multimeter, I lose about 1 volt while cranking, also tested volts on the starter live, and I'm not even reading more than one volt, think I'm just going to re do all the wiring and go from there
10. user_61517 Frequent Poster Joined: Sep 2012 canterbury Posts: 586 3/4 vtr turbo

    #10 3rd February 2015, 21:47

    Sounds like you have a bad earth