I have a 97 1.6 petrol Renault Scenic with a peculiar engine problem.
It has run for 107k trouble free miles until recently when it has developed a fault 20 mins after started. When cold, it starts and runs fine, and then rather suddenly (no massive jolt or anything) it runs very rough, loses power, and is incapable of keeping an idling speed high enough to prevent it stalling. Once the fault has happened the car has to go completely cold again before it will start again.
Plugs were replaced less than 10k miles ago. Air filter is clean, and we replaced the fuel filter thinking that might be the problem. It didn't fix it.
I have a partner who is very capable of repairing my car once the fault is diagnosed.
Does anyone have any suggestions as to what might be causing the problem?
If not, then I guess I will just have to take it to a garage :-(