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Ask Amedee Your Own Question
Amedee
Amedee, Jeep Technician
Category: Jeep
Satisfied Customers: 26270
Experience:  ASE certified Technician advanced level specialist. Wisconsin certified emissions state inspector
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Wrangler: no power to fuel pump 91 jeep wrangler

Customer Question

no power to fuel pump 91 jeep wrangler
Submitted: 2 years ago.
Category: Jeep
Expert:  Amedee replied 2 years ago.
Hello and welcome! My name isCustomerand I can assist you with your question. Can I start by getting your VIN?
Expert:  Amedee replied 2 years ago.
Hello and welcome! My name isCustomerand I can assist you with your question. Can I start by getting your VIN?
Customer: replied 2 years ago.
i will get it hold on
Expert:  Amedee replied 2 years ago.
ok
Customer: replied 2 years ago.
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Expert:  Amedee replied 2 years ago.
Ok thank you for the VIN! Give me a minute while I get your information together.
Expert:  Amedee replied 2 years ago.
Ok thank you for the VIN! Give me a minute while I get your information together.
Expert:  Amedee replied 2 years ago.
Ok, does the check engine light come on with the key on for a bulb check?Have you checked for power going into the fuel pump relay?
Customer: replied 2 years ago.
no check engine light, also no power to fuel pump
Expert:  Amedee replied 2 years ago.
Does the TPS and MAP sensors have a reference voltage with the key on? If so, how much?
Customer: replied 2 years ago.
i checked for power going to the pump,n0 to the relay, all relays are new
Expert:  Amedee replied 2 years ago.
Does the TPS and MAP sensors have a reference voltage with the key on? If so, how much?
Customer: replied 2 years ago.
i do not know how to check reference voltage
Expert:  Amedee replied 2 years ago.
You can use a voltmeter to check for power going to those sensors with the key on
Customer: replied 2 years ago.
i havent checked but i will
Expert:  Amedee replied 2 years ago.
The reason I ask is because it sounds to me like the computer is not awake.
Expert:  Amedee replied 2 years ago.
The reason I ask is because it sounds to me like the computer is not awake.
Expert:  Amedee replied 2 years ago.
The computer activates the fuel pump relay. If the computer is not awake, it cannot activate the fuel pump relay. Does that make sense?
Customer: replied 2 years ago.
yes, that is why i changed the computer, this is the second computer, i just installed it this morning
Expert:  Amedee replied 2 years ago.
If the computer is not awake, you will need to check all powers and grounds going into the computer.
Expert:  Amedee replied 2 years ago.
That will be your next step.
Customer: replied 2 years ago.
where does the computer get its power
Expert:  Amedee replied 2 years ago.
From the fuses.. power distribution center and ignition switch
Expert:  Amedee replied 2 years ago.
Did you have any further question?
Expert:  Amedee replied 2 years ago.
Hello??
Expert:  Amedee replied 2 years ago.
Hello!
It'sCustomerfrom just answer. I am just checking in to see how things are going and to see if you need any further assistance?
Let me know!
Customer
Expert:  Amedee replied 2 years ago.
Hello!
It'sCustomerfrom just answer. I am just checking in to see how things are going and to see if you need any further assistance?
Let me know!
Customer