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subaru impreza: it wont turn over..test light..fuel pump relay..crank

Customer Question
i have a subaru impreza...
i have a subaru impreza 04 and it wont turn over. the test light gets power at the computer and at the fuel pump relay but not before the box before the fuel pump. it is trying to crank over but it doesnt we checked relays and fuel pump works.
Submitted: 8 years ago.Category: Subaru
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Answered in 14 hours by:
10/7/2009
Subaru Mechanic: Amedee, Subaru Technician replied 8 years ago
Amedee
Amedee, Subaru Technician
Category: Subaru
Satisfied Customers: 27,089
Experience: ASE Technician advanced level specialist. Wisconsin certified emissions state inspector
Verified

Hello!

 

SO you are saying that the fuel pump relay does not engage?

 

DO we have power to the fuel pump relay?

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Customer reply replied 8 years ago
i have power from the computer to the relay but no power from the box before the fuel pump to the pump itself. we checked the fuel pump and it does work. what should we do if we dont have power to the fuel pump relay and what should we do if it does not engage. it does seem like it wants to start but wont.
Subaru Mechanic: Amedee, Subaru Technician replied 8 years ago

Ok...

 

I am going to pull a wiring diagram for you. WHat year is your vehicle? At first you said it was a 04 but then at the bottom of the post you said its a 1994.

 

Let me know and I will get you a wiring diagram.

 

THanks!

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Customer reply replied 8 years ago
thats my mistake it is a 1994
Subaru Mechanic: Amedee, Subaru Technician replied 8 years ago

Ok...

 

Lets check for power at the fuel pump relay. Turn the key on and check to see how many wires have power at the fuel pump relay. Let me know!

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Customer reply replied 8 years ago
ok it has power all the way to a little blk box that holds all the wires before the fuel pump. and now the car isnt getting a spark
Subaru Mechanic: Amedee, Subaru Technician replied 8 years ago

SO we are positive there is no spark and fuel pressure?

 

Does the check engine light come on with the key in the on position?

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Customer reply replied 8 years ago
no it doesnt read anything
Subaru Mechanic: Amedee, Subaru Technician replied 8 years ago
No... does the check engine light come on with the key in the on position?
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Customer reply replied 8 years ago
im sorry it does come on but the computer aint reading anything

Subaru Mechanic: Amedee, Subaru Technician replied 8 years ago

Ok...

 

THis makes sense. THe computer does not read anything and the check engine light is not coming on with the key turned on. THis tells me that the computer is not even waking up. You are not going to have spark and fuel because your computer is not even awake. I would recommend to start by checking all fuses inside the vehicle as well as under the hood. If all check out good, then we will need ot check for power going into the computer.

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Customer reply replied 8 years ago
fuses are all good. they have been checked. can you tell if there is power going into the computer what should i check for next? and if there isnt power then what? thank you for all your help.
Subaru Mechanic: Amedee, Subaru Technician replied 8 years ago

We will need to get access to the computer and check for power with a voltmeter.

 

Pull the computer out and check for power on the wires goign to into the computer.

 

WHen you get this far, let me know!

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Customer reply replied 8 years ago
ok well im leaving on vacation my first one since i left for iraq when i get back i will shot you a line to tell you what happens thank you so much your very knowlegdable
Subaru Mechanic: Amedee, Subaru Technician replied 8 years ago

SOunds good!

 

Please let me know!

 

Also, don't forget to hit the accept button so that I may receive my credit for my time that I have spend with you thus far. We can still continue our conversation.

Amedee
Amedee, Subaru Technician
Category: Subaru
Satisfied Customers: 27,089
Experience: ASE Technician advanced level specialist. Wisconsin certified emissions state inspector
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