Will not start after replacing fuel pump

Tiny
DENNIS HAYMORE
  • MEMBER
  • 2000 MERCURY MOUNTAINEER
  • 5.0L
  • V8
  • 4WD
  • AUTOMATIC
  • 200,000 MILES
Won’t start only with starting fluid. Replaced fuel pump runs for a few seconds on starting fluid. What should I check for? This is my sons car, this all started on day a about four months ago he drove to the store about five miles away came out it would not start. Had it towed home had to wait for the snow to melt so we could work on it. Checked the fuses they seem fine not sure about relay don’t have a way to check it out. Used my OBD tester it said nothing was stored in the system. But he had the battery disconnected from sometime not sure what to check now.
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Monday, April 29th, 2019 AT 11:49 AM

3 Replies

Tiny
ASEMASTER6371
  • EXPERT
Good afternoon,

Did you verify power to the fuel pump before replacing it?

I attached a wiring diagram for you to view. You will need a voltmeter to do some tests for voltage.

Check the fuse listed for power on both sides with a test light or voltmeter.

Roy
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Monday, April 29th, 2019 AT 12:41 PM
Tiny
TIFFANY ORLANDO
  • MEMBER
After we installed the new fuel pump, it built up pressure. So it is getting power. My son has a 2012 Nissan Frontier LE. The truck will start and run for abt 2-3 seconds on its own then kill. However, it will run continuously with starter fluid. We have checked all the fuses and battery and all are good. What else could this be. Thanks!
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Saturday, August 10th, 2019 AT 8:47 PM
Tiny
ASEMASTER6371
  • EXPERT
You need to test the actual pressure and see if it is dropping off before it stalls out.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Otherwise, it could be a security issue.

https://www.2carpros.com/articles/how-to-reset-a-security-system

Roy
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Sunday, August 11th, 2019 AT 4:41 PM

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