KUALA LUMPUR, Malaysia - Troubled engine supplier Renault is expecting to grapple with more "issues" in Malaysia this 2014 Formula 1 weekend.After disastrous test sessions, the French marque improved its new turbo V6 'power units' for the Melbourne F1 GP. Most partner teams - most notably Red Bull's Sebastian Vettel - still had race-ending problems.Renault's operations chief Remi Taffin said: "We had several issues with the cars in Melbourne buthave recreated the problems on a dyno. Most are fixed and the rest will be under control in Sepang."LOOKING FOR MORE VICTORY Mercedes dominated the 2014 opener in Australia but even Lewis Hamilton had to retire with an engine problem. Nico Rosberg said he intended to win again in Sepang.Rosberg said: "That's my goal but you cannot under-estimate the team (Red Bull) that has dominated the sport for years. We just have to keep pushing 100% in all areas."Stay with Wheels24 for the 2014 Malaysian F1 GP weekend.