2009 Subaru Forester won't start when temperature fluctuates from warm to cold
Asked by GuruBJJVF Jan 28, 2019 at 02:35 PM about the 2009 Subaru Forester 2.5 X Limited
Question type: Maintenance & Repair
My 2009 Subaru Forester won't start when the temperature changes. The engine turns over but will not start. Jump start it and it starts up and runs and starts fine until it sets overnight and the temperature drops again.
4 Answers
I think you have a weak battery. Cold saps the power from batteries. You may want to also have the alternator tested.
The battery is new. Replaced it when the problem first started. Alternator was checked and is okay. Was told it may be the MAF sensor.
Does the engine sound weak and turn over slowly when it is cold? A tuneup may be all you need. Can't hurt to clean the MAF.
New plugs, coil and starter. Turns over normally just won't start until jump started and then starts immediately.