I have a 1997 Hyundai excel sprint, 1.5lt 5sp Man. It has only travelled 58,150km since new and drives like a dream except... At speed over 85km/h eg: On freeway, engine 'cuts out' momentarily, feels as though it's running out of fuel. Then it will be fine for 10mins then do it again, sometimes for a min or so. It's really annoying me.
Have had it serviced, replaced plugs, oil/air/fuel filters.
Could it be Throttle Position sensor? Fuel pump?
Any assistance would be appreciated
Ontop of manifold ther is a vacume operated sensor it may be faulty the ther problem we have in aust the fuel pumps shut down the are in the tank under the rear seat under the metal plate remove plate turn ign on listen to see if pump powers up and pressures fuel line if so start and check fuel pressure with a pressuse guage in line watch it to see if pressure dropes hope this helps
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