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| Slow cranking motor https://ausmini.com/forums/viewtopic.php?f=2&t=101081 |
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| Author: | belldane [ Sat Jul 31, 2021 4:29 pm ] |
| Post subject: | Slow cranking motor |
Hello. I hope some of you can give me some ideas as to why motor is turning over slower than normal. It has always been a cow to start in the cold weather but this year won’t start at all. The battery is brand new and to help I have even connected a jump starter but it makes no difference. I tried again today and when I checked to see whether the terminals might have been lose, the positive one was so bloody hot that naturally I let a few adjectives out. The poor old dog will still not come near me. Anyway I am suspecting that it could be a starter problem. The starter is the standard type. If it makes any difference the car is a mk2 S. Thanks for any help you can provide. |
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| Author: | drmini in aust [ Sat Jul 31, 2021 5:33 pm ] |
| Post subject: | Re: Slow cranking motor |
First check the battery cable lugs are clean and tight. If the cable lug onto the starter is hot it probably needs new brushes. These starters are not hard to repair, the brushes, bushes and pinion gear are still available. The armature will probably need machining true before fitting new brushes. |
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| Author: | IndigoBlueCooperS [ Sat Jul 31, 2021 6:27 pm ] |
| Post subject: | Re: Slow cranking motor |
If the battery terminal was hot, it has a poor connection - high resistance. You are generating heat, not power to the starter. Could be the termianl onto the battery, or the cable as it goes into the terminal. |
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| Author: | Steam [ Sun Aug 01, 2021 9:14 am ] |
| Post subject: | Re: Slow cranking motor |
Adding to what has been said already, a hot terminal means it is drawing a large amount of current which may not necessarily be associated with poor connections. it would be worth checking the engine turns over freely from the flywheel. The bearings in the starter motor and that the starter turns freely off the engine. Be aware that the starter will jump all over the place when bench testing so clamp it in a vice before testing. The starter solenoid may have dirty or worn / pitted contacts internally. |
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| Author: | 9YaTaH [ Sun Aug 01, 2021 12:29 pm ] |
| Post subject: | Re: Slow cranking motor |
or starter has a shorted turn(s)...for example: https://electrical-engineering-portal.c ... ed-turns... |
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| Author: | belldane [ Sat Aug 07, 2021 6:50 pm ] |
| Post subject: | Re: Slow cranking motor |
Thank you for your replies. Turned out the starter was stuffed. Have a new one on the way and hopefully that will fix problem. Thanks again |
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| Author: | Steam [ Sat Aug 07, 2021 9:21 pm ] |
| Post subject: | Re: Slow cranking motor |
Good to know tht you found a d fixed it. Result. |
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