C180 Idling at 1600RPM

[Kaiman]

I hope this is a simple one.

Recently I have experienced my C180K (03) idling a bit funny at standstill. Firstly it sticks at about 1500-1600RPM when I bring the car to a halt, if I rev the engine it rises and falls back to 1000rpm and often it slowly rises to about 1500/1600RPM and then drops back to about 800-1000RPM. I have not experienced a drop in performance and it is not an erratic fluctuation in revs but it is there and annoys me. The other day I noticed a slight juddering when I started the engine. Sometimes it remains where it should be about 800/900RPM at idle.

Any help gratefully received as ever.

 

[Aussie Nick]

Maybe an ecu problem. This is an interesting one. I hope some other members will come on board with their views.The juddering maybe another isolated problem and hard to attribute to the ECU

 

[uqstudent]

throttle body

The problem could also be the throttle body, i have known of similar situations of unusual idleing and has always been traced back to a problem with the throttle body. The issue with this is that it has something to do with the electrics in the throttle body which is very complicated. Ask your mechanic.