My 2001 Volvo Xc70, sometimes will just crank for a long time and i have to give it a lot of gas for it to cut on, other times it just cranks and doesn't come on, other times when i keep on trying it goes into immobilizer mode and i have to unplug the battery and then i try it and it cuts on still have to give it a lot of gas, once its on no issues with it staying on or idle issues very weird started to happen after temperature change in my area.