Aloha Everyone,

My fuel pump went out a month ago. Replaced that with new Airtech pump. When installed, fuel presure was 60 lbs running after install. One month later, the car would stall while running. It would start and run for a while and then would stall again. 0 fuel pressure in the rail when stalled. Pump would prime and start a few minutes later until it finally failed and wouldn't prime at all. Replace and installed second pump and also replaced feul pump relay switch as well. Fuel pressure was only 24 lbs running after second install. Immediately after installing 2nd pump, it stalled once, but ran fine after that for a week. While idling for a few minutes, it stalled again. It wouldn't restart and again 0 pressure in the rails. Fuel pump not priming with key in the on position for the second time. I know I need to replace the pump again.

Fuel tank and fuel clean and I did replace fuel filters both times. All wire connection are good. i don't know what else to check.

I am stumped. Did I get two dud feul pump or is there another problem. I appreciate any wisdom and assistance in this repair. A mechanic said it might be the oil pressure sending unit may need to be replace. I don't have an oil pressure problem and the pressure reading is between 30-42 lbs depending on rpm range. And I know that means I need to remove the intake manifold to get to that switch to replace and I am trying to avoid that and the cost.

Mahalo..........poi