vincent52 Posted September 28, 2019 Report Share Posted September 28, 2019 while trying to sort out a bad case of rough running I now have a new problem, the ignition is on even when key is in the off position, can only stop engine with batt cut out. advice welcome from other tr3a sufferers len( no hair left to tear out). Quote Link to post Share on other sites
harlequin Posted September 28, 2019 Report Share Posted September 28, 2019 I would suggest that the ignition is picking up a feed from the permanent live through a fault in the fuse box probably corrosion Try disconnecting the permanent live (brown) wire from the fuse box making sure it doesn't short out on anything, then see if you still have the problem. If so remove the fuse box and give it a good clean up. If the above did not fix your problem I would suspect it's a fault in the ignition switch. George Quote Link to post Share on other sites
ijonsson Posted September 28, 2019 Report Share Posted September 28, 2019 Check if you still has power to the coil after ignition turned off, than trace backwards. Problem probably at the ignition key, a friend of mine had a similar problem due to that the whole ignition key lock had rotated and then shorted a couple of wires behind the lock. Another problem with not cutting out was given to me after I had wired in a main relay, the relay got enough power to hold via ignition warning lamp (cured with a diode) Quote Link to post Share on other sites
RobH Posted September 28, 2019 Report Share Posted September 28, 2019 (edited) Did you perhaps cause this by your earlier investigations into rough running? Were you disconnecting any wiring? If so that is probably the first place to look. Also if you have fitted any new wiring the same applies. Is your car wiring bog standard or are there added accessories? It is possible for a 'sneak feed' from another circuit, eg through a relay coil, to provide just enough power to the coil to keep the engine running even if the full 12v isn't present. Edited September 28, 2019 by RobH Quote Link to post Share on other sites
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