Hoping to get help here. Have asked before, but still having problems. My '98 V70R experiences a very noticeable engine shudder, like it is about to stall, two or three times every time I drive. Performance otherwise is fine. It happens under all conditions (acceleration, idling, cruising) and engine temp doesn't seem to matter. It lasts only for a second or two and feels like three 'shakes' or 'shudders'. It is not an injector and I don't think it is a fuel problem. Some of you have told me it might be ECU, and that there was a fleet-wide problem that Volvo dealerships would know about, but have had no luck there. If this sounds familiar to any of you, I would appreciate knowing the 'fix' and any service bulletin reference that applies.
Many thanks in advance.