Ok, this has got me tearing my hair out....
1998 Fiesta 1.25, Endura lump. Starts beautifully. Hot or cold. Never a problem. Surges and stutters after about 10 minutes. Sometimes quite badly, sometimes just a little. But never for the whole journey. Feels like driving into a strong wind, then kicks me in the back as though its not there anymore.... Usually cuts out completely when clutch is dipped-eg traffic lights. Again, not always. Always cuts when I dip the clutch and freewheel down hills (??) The times it is about to cut but doesn't, it tends to pick itself up and rev a little harder, then stabilize itself.Previous posts on the subject suggest cleaning the Idle Control Valve. Been there, done that. No change.
Can anyone offer advice before I give up and drag it to the garage for an (expensive?) check??
TIA Eric