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I changed the fuel pump I get power to the fuel pump at the ...

Sent to Car Experts November 26 05:50 PM

I changed the fuel pump I get power to the fuel pump at the start and then it shuts itself off. I have also changed the fuel filter. Please any help!!!!!

Optional Information:
1993 Toyota pickup 22re

Already Tried:
changed fuel pump fuel filter tested poer to fuel pump gets pwer at start and then shuts off

Customer (name blocked for privacy)
Status:  Closed   Value: $5
Answer
November 26 6:27 PM (37 minutes and 6 seconds later)
         
ACCEPTEDCheck Mark
How long does the engine run before it shuts off? A couple of seconds maybe? If so it sounds like the fuel pump is running from the initial voltage from turning the key on. The fuel pump will run for about three seconds after the key is turned to the run position. After the initial fuel pump when the key is turned on the fuel pump shuts off until the air flow meter door moves from air going through it from the engine running. There is a switch in the air meter that closes and grounds the relay and allows current to flow to the fuel pump and that is how the fuel pump runs while the engine is running. You will need a dvom to check continuity of the wires and to check the air flow meter switch to see if it is closing.

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autodoc_2000 -- Auto Service Technician -- 98% Positive Feedback on 928 Car Accepts
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Reply
November 26 10:33 PM (4 hours and 6 minutes and 30 seconds later)
         
I put screw driver in the door to hold it open. It does run, But how do you correct the problem?
Customer (name blocked for privacy)
Answer
November 26 10:57 PM (24 minutes and 9 seconds later)
         
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autodoc_2000 -- Auto Service Technician -- 98% Positive Feedback on 928 Car Accepts
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