How do I fix the intermittent display fault in my 2004 Ford Focus?

My Ford Focus 1.6 has done 88,000 miles. It kept showing an intermittent display fault with the odometer, speedometer, fuel gauge and temperature gauge all not working. Now none of these have worked at all for three weeks. My MoT is up next month. All other electrics are working fine, lights on cluster still show on ignition. I'm aware that this type of fault isn't uncommon with this car, but I'm curious as to any possible solutions to consider.
The oil seal to the speed sensor in the final drive fails. Sends everything haywire. Costs about £100 to fix.
Answered by Honest John on

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