What to do if your Subaru has hesitation?
Most likely you need to replace the plugs, and/or the ignition wires. I have a 2007 Outback that had the same symptoms. Taking the MAF (Mass Air Flow) Sensor out and spraying some electronic sensor cleaner on it removed the hesitation. There are just two screws that hold it in to the intake, so it is a quick operation.
Why does my Subaru run poorly at idle?
Ever since I got the car it has idled poorly, but always ran fine once off of idle. In the process of diagnosing the bad idle, I replace several parts (coils, O2 sensor, etc).
What causes engine hesitation and stumble problems on the 90 +?
Then it developed an intermittent hesitation problem- you would be cruising at 60mph, on a 400 mile trip, ease off the gas pedal, and suddenly for 1/4 second, it was as though someone had switched off the engine and then turned it back on again. The car would then run faultlessly for the rest of the trip.
What to do if your Subaru has low power?
If the the air intake is not obstructed, the throttle plate/cable not loose or sticking, then look for spark plugs and ignition wires. If all that is sorted out, look for fuel pump issues, or sensor errors (although you did not mention a check engine light). Most likely you need to replace the plugs, and/or the ignition wires.
Are there any problems with the Subaru Outback?
Any further back than 15 years and you’re courting danger with potential problems that could arise from a vehicle that old. In 2005, the Subaru Outback had issues with things like the head gasket leaking, issues with speed control, as well as clutch problems.
Why did my Subaru Outback hesitate to change the spark plug?
My hesitation was due to my plug wire on #3 breaking apart after the last spark plug change (I pulled on the proper location of the wires to take the wires off). I changed them in the parking lot of the local Subaru dealership (when I was out of town!).
Why does my Subaru stall when it warms up?
Check them. Fuel pump could be running great and supplying sufficient fuel a for cold running engine and then as it heats up, with the engine, expansion of the metals in the pump or module reduces the pump output. Check the fuel pressure cold, then after the engine warms up and acts up.