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Old 08-12-2019, 12:11 PM
Jezbob Jezbob is offline
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Coil / alternator

Sudden stalls after 20 mins suggested elec rather than fuel. Both my fuel pump and coil were crazy hot. Replaced coil with a 3 Ohm resistance coil and same result. Replaced spark plugs - the same was about to happen but i stopped before stall to save coil.

So now to the cause - I'm thinking is it the current from the alternator that is too high? My coil has internal resistance of 3 Ohms, and I think the alternator is supposed to have a section that is a resistor attached to it. So should I just buy and fit some extra resistor to put somehow between alt and coil?? Or is it time for a new alternator?
And finally what of the hot fuel pump? Is it just a coincidence that it too is faulty? Or could the ignition switch which is connected to both the pump and the coil (am i right here?) somehow be frying them when the engine ids running. My amateur mind can't really see how that could happen...
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Old 08-12-2019, 05:19 PM
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joe_db joe_db is online now
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First step - buy a digital voltmeter.
Second step - measure voltage at alternator, battery, and coil at cruise RPMs.
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The Following 3 Users Say Thank You to joe_db For This Useful Post:
ndutton (08-12-2019), Sam (08-13-2019), thatch (08-12-2019)

alternator, coil, ignition, stalling

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