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I have 12v to the fuel pump connector but the fuel pump will…

Customer Question
I have 12v to...

I have 12v to the fuel pump connector but the fuel pump will not work

Mechanic's Assistant: Has your car been stalling?

Yes and hard starting. I just replaced the pump but its still not working

Mechanic's Assistant: What is the model/year of your Lexus?

2001 lexus rx300

Mechanic's Assistant: Are you fixing your vehicle yourself? What have you tried so far?

I swappes the horn and fuel pump relay before opening the tank. No avail, so i pulled the pump out of the tank and connected it and it would not buzz. I replaced the pumpwith a new one reconnecred and still no buzz

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

No thats it

Submitted: 8 months ago.Category: Lexus
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Answered in 11 minutes by:
8/1/2017
Lexus Mechanic: Roy, import/domestic specialest replied 8 months ago
Roy
Roy, import/domestic specialest
Category: Lexus
Satisfied Customers: 7,254
Experience: ASE master tech for 40 years
Verified

hello, my name is ***** ***** I will be glad to assist you. please allow me a couple of minutes to gather some basic info.

Roy

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Customer reply replied 8 months ago
Ok
Lexus Mechanic: Roy, import/domestic specialest replied 8 months ago

ok, did you check the ground side of the connector?? you have power and a new pump but if you have no ground, it will not work

Roy

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Customer reply replied 8 months ago
Which side is the ground i checked the outside connector which i assumed was the ground, but i have no voltage coming through the connector in the sending unit cap where the main connector is
Lexus Mechanic: Roy, import/domestic specialest replied 8 months ago

what wire did you verify voltage to the pump???

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Customer reply replied 8 months ago
The white 4 spade connector to the sending unit
Lexus Mechanic: Roy, import/domestic specialest replied 8 months ago

trying to get a diagram

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Customer reply replied 8 months ago
Nevermind it works. Didnt know the pump only work during koer. I was expecting a priiming buzz
Lexus Mechanic: Roy, import/domestic specialest replied 8 months ago

2 seconds only

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