Volvo RWD 140-160 Forum

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Ignition Switch Rebuilding 140-160

G'day All!

I'm currently in the process of rewiring my 144 and I've struck trouble with my igniton switch.

Firstly there is high resistance in both position 1 and 2 (5ohms). Is it possible to open and clean the switch or is it replacement only?

Secondly there is a terminal on the switch that doesn't appear on the wiring diagram. (i've got 2 terminal 30, 15, 50 and 75) there is another terminal which doesn't appear on my original wiring diagram. any clues to what it is?

Thanks!
--
Alex Shevlin (Sydney): '71 142S, '72 144S, '81 244GLE, '81 244GL, '01 V70XC








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Ignition Switch Rebuilding 140-160

To clean, just spray CRC CO Contact Cleaner everywhere into the switch, including through the key slot. This stuff is not oil based, and wash dirt and oxidants out, leaving the switch dry. Soak it in one or two long sprays rather than short burst. If it does not come right, you can always opt for the switch driving a relay until you find/get a new switch. You should be able to get one that will handle a decent current while drawing less than 0.2A, which at 5 Ohm is only a 1V drop over the switch (i.e. the relay will see about 11V).

Your wiring diagram is for the early model, the switch is for the late model. My diagram is not very clear (as they usually are), but I will e-mail it to you.







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