Currently I am having issue with efi cultus engine 2008 model.
1) RPM on cold engine reaches 2000rpm+ for around 1-2 mins then settles to 1200rpm on idle..
(1200rpm kept on idle because if I put the idle rpm to less than 1200rpm, on using ac and headlights rpms gets decreased and fluctuation arises but it settles on 1000rpm when ac and headlights are on during night timings).
Throttle body was cleaned on the basis of rpm fluctuation.. after cleaning throttle body the rpm fluctuation issue did not resolved until I changed the TP sensor (issue detected of tp sensor via card scanner)..
Plugs and wires are okay and in good condition (checked by the electrician & Mechanic)
Loose wiring issue got resolved.
2) One more issue is fuel mileage is low in city (khi) it gives 8-9 km/litre..
Fuel injectors are cleaned..
3) Rpm fluctuates on load (lights and ac) when the car drives about 50kms/day, rpm reaches to 500rpm and then gets to normal (1000rpm) on idle.
Please guide if anyone had the same issue and got resolved..