Detail: Hello, When driving my Subaru the revs start fluctuating and then my engine cuts out. The power icon starts to flash and then disappears. Engine restarts fine, but within a minute the revs start fluctuating again and engine cuts out. What could be the problem?
Solution: It could many things, please go for a scanner test , Hi, a 6ya Mechanic can help you resolve that issue over the phone in a minute or two. Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US. click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need. Goodluck! , pay close attention to the fuel filter as this is a common symptom and sign of blockage and poor fuel delivery....replace fuel filter , Check The Vehicle Speed Sensors. The Legacy has 2 Vehicle Speed Sensors (VSS): VSS1 is located inside of the transaxle; VSS2 is located in the combination meter assembly. VSS1 Disconnect the electrical harness from the transaxle. Connect an ohmmeter across the transaxle's electrical harness terminals 9 and 16. The resistance should be 450-650 ohms. After testing, reconnect the electrical harness.VSS2 Remove the instrument cluster from the instrument panel. Disconnect the electrical connectors and the speedometer cable from the instrument cluster. Connect an ohmmeter or continuity tester across the combination meter terminals 7 and 11. Insert a small screwdriver in the speedometer cable drive socket. Rotate the speedometer drive and note the continuity across the VSS terminal. Continuity should turn ON/OFF 4 times per speedometer drive revolution. , I know I will get some argument on this one, but regardless of what manufacturers recommend, the best possible lubricant is a good synthetic. They far exceed any manufacturers needs in both lubricity long life and resistance to thermal changes. they do not burn off or form deposits readily and work in any temperature climate. as far as rating, a 10-40 or 50 works for everything. With synthetics those #s are almost a decoration on the can because in reality they cover a far larger span. Personally I would not use mobil1 (too much additive package not enough real stuff) on the other end, amsoil is one of the best (they even offer a 0w50 oil) Whatever you use make sure you keep it clean. A good oil filter is essential and if extending oil change intervals, you can just change filter and any oil lost. I know I've ranted, but the actual lab testing results and notes I've made over the years is far longer! good luck whatever you decide on! , Ignition system. For failures that cut out like this is a common sign of a ignition system failure , sending unit may be faulty replace with new unit also check for a loose ground and or alternator belt