I think my Ford Sierra 2 litre dohc efi may need remapping. It has become very unreliable ... failing to start and when running has flat spots under accelerarion. I have looked at all the obvious possibilities viz: distributor, cap rotor arm, plugs all of which I have renewed. Ditto the fuel filter and llamda sensor. I have checked all HT leads and battery connections and earths. Can anybody suggest other avenues to explore.
Looking forward to any suggestions.
Thank you
Looking forward to any suggestions.
Thank you
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