Hi,
Asking this for my mate who doesn't know about USENET :)
His 2004 Meriva has just started stalling.
It can happen once in a journey or dozens of times. Engine restarts fine. If driven on and off the clutch (ie dipping the clutch periodically) it seems to get by.
ECU has no codes recorded.
It idles fine forever and does not hesitate or mis fire whilst idling.
My guess is fuel starvation - does that seem a sensible starting point?
Blockage in the fuel line or filter starving the engine when demand is high? Or a faulty MAF airflow sensor that fails to signal the extra air taken under load?
I would have thought a faulty injector pump would have given problems under all conditions? Merivas have pages of "stalling issues" on google.
He did say the flywheel was changed, which means the crank sensor could have been damaged - but I cannot see how that would give these symptoms, having had that sensor go doolally on a GM engine (Daewoo Lanos) myself.
Pumps are expensive and would be the end of the car - but cleaning the lines and a new filter or MAF would probably be economical. So any ideas would be most welcome :)
Cheers and TIA
Tim