Question about 1987 Nissan 300ZX

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No power to fuel pump relay

I dont get power to fuel pump relay when key is turned on, so car cant start. I can manually operate relay and pump works, car starts up. Trying to find out why fuel pump relay isnt getting that power... from IGNITION

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There is an emergency fuel pump safety shutoff in case of an accident that will automatically shut fuel pump off so fuel does not keep pumping out at the scene of a crash. The reset button is usually in the trunk depending on what vehicle you have. Your manual will identify location for you.

Posted on Apr 13, 2014

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I have a 2000 hyundai elantra and it wont start not getting gas cant hear the fuel pump to i thought id look for the inertia switch but have not manual and dont know where it is can you help?


Hello Jeanette: My name is Roger and I will help you. Your car does not have an inertia switch that can be reset. Check the fuses and also make sure the fuel pump relay works.The relay is located in the passenger compartment relay box. Should say relay box on the cover. If all are in working order you will need to test the fuel pump itself.You do not need to remove the fuel tank to do this. Remove the rear seat lower cousion from the car. Remove the inspection cover to gain access to the pump. Unplug the harness and check for voltage when the key is turned on. SHould you have power at the pump plug ? the most likely problem is the fuel pump. Should you need further help please just ask. Please rate the answere. Thank You for using Fix Ya. Roger

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Model? Year?

Check per owner manual to be sure inertia switch is not tripped. Remember, fuel pump only runs for 5 seconds when key is turned ON, then it shuts off if engine is not running. Pump always runs when key is in START position.
Listen for pump to run inside fuel tank for 5 seconds after key is ON.

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I have a 2003 Pontiac Grand Am. Earlier this year it began having starting problems and I learned that the fuel pump was not turning on sometimes when i put the ignition switch to on. (wouldnt hear it) ...


It is most likely the Ignition switch. I have replaced several for this exact simptoms.
To check it, you test the power for the fuel pump relay.
When the ign switch starts acting up it will not power up the fuel pump relay portion of the fues box.
You can check it with a test light.
On a day when it starts and runs fine, pull the fuel pump relay, turn key on and probe the socket with test light and make note which ones have power to them.
Then one day, when it dont start, dont turn the key off yet, pull the relay, and retest, and compare.
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Hope this helps
If it does please leave some testimony

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