...a computer problem? 1994 volvo 850 2.4L L5 Non-turbo engine with automatic transmission that stalls only after it has run for a few minutes. Always starts and runs, but stalls after a couple minutes. Code 214 always shows up. Replaced RPM sensor, coolant temp sensor, MAF sensor, battery, thermostat and still get code 214 (rpm sensor error) and still stalls. Is this this ECU going bad?