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Post by rhorner on Aug 21, 2008 16:41:28 GMT 11
on my 1990 bighorn the starter motor only clicks when the key is turned i have found the wire from the ignition is only supplying 3 volts to the starter solinoid does anyone know what the voltage from the ignition is ment to be
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Post by geeves on Aug 21, 2008 17:01:01 GMT 11
Check the voltage at the battery. The solinoid should be 12 but will normaly drop to about 10 when cranking. At about 8.5 volts the solinoid in the pump drops out killing the diesel so even if it turns over it aint going to start
Strange thing about this is Ive just dropped my bighorn down to the auto sparky for the same thing. Ive already replaced the battery and proved it to be charging ok but it dont want to go and Im too busy to look myself. Add to that I couldnt get the bolts undone on the starter.
Posible culprits. bad battery esspecialy with this current icy weather, dirty or loose conection. Bad solinoid/starter
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Post by rhorner on Aug 21, 2008 17:14:58 GMT 11
thanks jeeves i have checked the battery and the main power supply to the starter they were both 12v i would be interested to see whats wrong with yours i am thinking there may be a problem with my ignition switch
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Post by geeves on Aug 21, 2008 20:32:43 GMT 11
was that while the key was turned.
I had a problem a while ago like that. Just every now and then it would happen and jiggling the key would allow it to start. I put a test lamp across the solinoid which proved it back to the key then the problem just disapeared. From memory the key drives a relay.
A good way to test would be to run a hot wire from the solinoid back to the battery. Touch it on the battery and the starter should operate. (solinoid takes a fair bit of current so expect a big spark)
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Post by rhorner on Aug 22, 2008 16:32:28 GMT 11
thats just what i did and as you said it starts i think i will be looking at the ignition next.try and see how many volts in and how many to the solinoid
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Post by geeves on Aug 22, 2008 16:35:07 GMT 11
Mine was a bad starter.
Water had got in and seized the bearings which had spun in the housing then collapsed The armature had worn through the stator coils causing a short. All that happened when the starter engaged was a little click and voltage drop at the brand new fully charged 700cca battery to 7v. The starter mounting bolts were seized to the point that getting it out required a 1.5 meter breaker bar in the socket even after soaking in crc for a day. Auto sparkys are not used to working up a sweat but he said that there was no way it was comeing off unless it was on a hoist.
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Post by Harry on Aug 25, 2008 22:32:30 GMT 11
My motors come out so often the bolts don't get time to seize.You can get the bolts out on on the ground but you need 3 long extensions, a universal and a good strongbar.
Harry.
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Post by geeves on Aug 26, 2008 7:14:14 GMT 11
He showed me the strong arm he used and said it only just moved it. It was 1.5 meters long. He was worrying about snapping the 12mm bolts
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