MCSF light on
My 156 Sw 1.8 TS (2003,interior facelift has had the MSC failure light coming on for about six or seven weeks. It comes and goes. The car run faultlessly with plenty of power and very smooth.
AR dealer diagnosed the following:
PO302 Error-Cylinder 2 ignition failures
PO304 Error-Cylinder 4 ignition failures
Plugs were changed and it was okay for about a four days. Since then a trusted mecahnic (works at Volvo main dealers) has swapped coil packs and injectors. Okay for a few days then the MCS failure light returns. As I said the car runs 100%!!!
Anybody got any ideas of where to go next?
I have owned the car for about 15 months and it came with a full service history and has been great apart from this problem. it has done 66,000 miles, so fairly low for a 2003.