77 Shadow - no power to dash/ nothing on key turn - Rolls-Royce and Bentley Forums
 
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Old 03-29-2017, 07:48 AM Thread Starter
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77 Shadow - no power to dash/ nothing on key turn

Hi guys, so started the car this morning and it just cut out after approx 30 secs never to start again, I have new battery, checked power from battery/ earth and all is well and there is also power to the starter but there are no ignition lights. 2 electric windows are working and lights come on, but nothing on turn of key not even a click, could it be faulty ignition switch? any suggestions I'm really stuck and need the car!!
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Old 03-29-2017, 08:22 AM Thread Starter
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Have also been advised as I tried jump starting not long ago it could be ammeter shunt? To confirm there are no dials working aside from amp dial and no lights coming on ignition
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Old 03-29-2017, 10:10 AM
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Check "fire triangle " :

- fuel / does the fuel pump works and send fuel / fuel filter is recent or old and full of sludge...
- air / is air filter ok , not tool old and full of dust
- electricity / do the spark plugs receive electricity

If one is missing, car will not statrt

Jean

97 Continental R
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Old 03-29-2017, 12:47 PM
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By "lights" do you mean headlights or interior lights? If the headlights come on, then it's not the ammeter shunt. If just interior lights, then it still could be.

Cheers,
Jeff.
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Old 03-29-2017, 01:05 PM
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It may be also the bloc where you put the key with bad connections on the back.
Oxydation or connexions not screwed enough....

You should have ignition lights

Fault Ignition switch, yes , finally might be suspect n°1.

Or starter relay ?

Jean

97 Continental R
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Old 03-31-2017, 07:45 AM Thread Starter
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Thanks for replies. Fuel and air have been checked, plugs are sparking. The car was in fairly regular use until approx 1 month ago. The headlights come on, few of the Windows work, but no power to ignition lights or dials and in turn of key no click or engine turning over. Have a new ammeter shunt will see how that goes today.
I will also take out the ignition block today see if there's power to switch at back
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Old 03-31-2017, 12:38 PM
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I'd bet on your switchbox then. Headlights working means it's not the ammeter shunt.

Did you find the electrical diagrams on the Aussie site?

(http://rrtechnical.info/SY/TSD4200/tsd4200.htm, Chapter V)

Cheers,
Jeff.
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Old 03-31-2017, 12:51 PM
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It might be an internal issue in the ignition switch

Jean

97 Continental R
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Old 04-01-2017, 08:18 AM Thread Starter
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yes jeff thanks for that I've printed off, switchbox is approx £400 from flying spares this is as usual proving to be more than a cheap fix!
Thanks jean will be removing dash and ignition barrel to check the power to switch
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Old 04-01-2017, 10:36 AM
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Patrick Ryan just posted some more pictures on the Aussie forum switchbox thread. Included are a couple of the ignition points.

http://au.rrforums.net/cgi-bin/forum...pl?17001/23452
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