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tamaz
tamaz, Subaru master technician
Category: Subaru
Satisfied Customers: 1134
Experience:  Subaru certified,ASE Master technician,25 years experience
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2009 Forester wont start, gauge not working

Customer Question

2009 Forester wont start, gauge not working
Submitted: 1 year ago.
Category: Subaru
Expert:  tamaz replied 1 year ago.

Hi,what type of no start condition are you experiencing,crank won't fire or just a no crank condition?

Customer: replied 1 year ago.
it cranks fine. the fuel gauge showed empty when the tank was full, The next day it would crank but not start. Seems to be fuel related but have not checked the spark yet
Expert:  tamaz replied 1 year ago.

Hi,if you have some starting fluid spray or carb cleaner unhook air cleaner box and spray a little into the intake tube while someone cranks the engine over if it starts we are looking at a fuel delivery problem,this is a good starting point,let me know, thanks.

Customer: replied 1 year ago.
I will try and get back to you
Expert:  tamaz replied 1 year ago.

O.k. thanks

Customer: replied 1 year ago.
Ok, the car runs when staying fluid is sprayed into the air box. Fuel delivery issue it seems. What is the next step
Expert:  tamaz replied 1 year ago.

Hi, remove the rear seat bottom to access the fuel pump ,we need to see if we are getting voltage back there,because your fuel fuel gauge is not reading I'm suspecting some broken wires,so remove the lid on each side ,the bigger one accesses the pump the other the sub level sensor and will continue ,thanks

Customer: replied 1 year ago.
Ok done, fuel pump exposed
Expert:  tamaz replied 1 year ago.

Any damage to the wiring thats you can see, the harness creeps back along the tank so look carefully

Expert:  tamaz replied 1 year ago.

At the pump there is a green wire with a yellow tracer, this wire should have battery voltage

Customer: replied 1 year ago.
Wiring looks good and in tact. Power to green wire with yellow tracer had only intermittent power, a couple seconds, when key is turned to on position
Expert:  tamaz replied 1 year ago.

Hi,the voltage reading is correct,the next step is to connect the green diagnosis connectors to see if the pump makes noise.The connectors I'm speaking of will operate all solenoids,relays ,cooling fans and pump, all these will cycle on/off.the connectors are located in the passenger foot well under the carpet near where your left foot would rest,they are attached to the wiring harness coming out of the firewall,connect them then turn key to on the fuel pump should operate on and off if no noise the pump is faulty,thanks

Customer: replied 1 year ago.
Ok, we ran the test and the pump runs. It cycles on and off consistently.
Expert:  tamaz replied 1 year ago.

Hi,remove the fuel line at the engine to see how much fuel if any is being pumped you will need the disconnect tool which is available at all auto parts stores and preferably a clear glass container to catch the fuel,and also it get a look if maybe it's contaminated with water or debris.

Customer: replied 1 year ago.
The fuel delivery is very minimal, chugs out a little then stops then a little more, however it is clear.
Expert:  tamaz replied 1 year ago.

Hi while the fuel pump is cycling does the fuel come out in a steady stream or just dribble

Customer: replied 1 year ago.
Just a dribble
Expert:  tamaz replied 1 year ago.

If it's just a dribble it working but volume is the problem,sounds like a fuel pump is needed

Customer: replied 1 year ago.
Ok, we will replace it and let you know
Expert:  tamaz replied 1 year ago.

Thanks.

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