Fuel pump staying on

[Epalm18]

Recently posted my 91 explorer intermittently dying on side of road with occasional high idle before dying. Codes 87 and 95. I’ve replace nearly every sensor or part. Now I notice sometimes I turn the key on and the pump won’t turn on, then it cranks excessively until it fires. Today I turned key to on position and the pump stayed on for about 5 minutes before the relay clicked and the pump went off. Wiring issue? Any advice helps. Thanks

 

[Mr. Alligator]

Check fuel pressure. Have you changed your fuel filter?

My guess is that this a faulty fuel pump. These fuel pumps often seem to follow a slow, intermittent path to complete failure.

Change fuel pump and filter. Avoid cheap fuel pumps. Use Bosch fuel pump if you can.

Good luck.

 

[Rick]

Connections on the underside of the relay box under the hood can become corroded as well.

 

[Epalm18]

Check fuel pressure. Have you changed your fuel filter?

My guess is that this a faulty fuel pump. These fuel pumps often seem to follow a slow, intermittent path to complete failure.

Change fuel pump and filter. Avoid cheap fuel pumps. Use Bosch fuel pump if you can.

Good luck.

I changed fuel filter and installed Bosch pump yes. Just the pump. Not the complete sending unit. But yes. All new. And relay.