Falcon
You ask about an accurate fuel consumption check. Fill the tank. Reset the trip odometer to zero. Drive as you normally drive till gauge is well down. Refill tank . Take note of trip meter Kms. Note number of Litres to fill tank. Reset trip meter. Come back on here with Kms and Litres and we can give you a pretty good idea if it is still sick.
Idle speed when first started COLD should be about 1300_ 1800 rpm approx. for maybe 1_2 minutes approx. then subsiding to a normal HOT idle of about 750_ 800 rpm.
It's on the last tick on the fuel gauge so I'll fill her up in the next few days and see how it goes :)
With any luck, you won't hear from me for a bit because it'll still have fuel in it haha
From what I remember, the idle speed when cold sits around maybe 1400rpm, but hot sits at like 900-100. I'll need to double check since I've only driven it 10 minutes since I got it back from the mechanics.
Reddtarga
Fast idle:
One easy thing to check is whether your ACIS valve is operating properly. There are several small hoses in the ACIS system, and one could be off or not connected properly that could cause a fast idle.
Valve should be open with the engine off, but should immediately pull in when the engine starts, closing the ACIS butterfly's.
You may have to get someone else to start the motor while you watch it.
I'll have a quick look in the next few days for that