engine losing power up hills

1997 FORD EXPEDITION
178,000 MILES
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JUNIOR197
  • MEMBER
  • 2 POSTS
my Expedition is losing some power with gas, and I was wondering if it would be a bad fuel pump or could it be because the fuel filter. When I try to go up hills, I loose a lot of power, and it seems I am about to break down. . Can You help me? I've looked online that the fuel filter can block gas from going to the fuel pump. . Could this be my problem or is it a bad fuel pump. . . I do notice a slight delay with starting my car in the morning. . . Could it be replacing the filter be great or will it be my pump?
Dec 17, 2011 at 10:54 PM
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RIVERMIKERAT
  • ✓Experienced Mechanic
  • 6,106 POSTS
Check the fuel pressure. Disconnect the catalytic converter and test drive it. If the power comes back, you'll have to replace the catalytic converter.

This guide can help

https://www.2carpros.com/articles/engine-has-low-power-output


Please go over this guide and report back.

Dec 17, 2011 at 11:06 PM
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JUNIOR197
  • MEMBER
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So, it could have nothing to do with the fuel pump? Because I want to see if replacing the fuel filter will bring back the power. If not I know for sure it's the pump. . .
Dec 17, 2011 at 11:18 PM
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RIVERMIKERAT
  • ✓Experienced Mechanic
  • 6,106 POSTS
A plugged catalytic converter will cause your engine to lose power under load. But, so can a fuel pump that's not delivering enough pressure, or a clogged fuel filter. Temporarily removing the catalytic converter will either eliminate it as a suspect item, or give you your answer.

If the cat is eliminated, next is to check the fuel pressure. This will tell you whether the problem is related to fuel pressure delivery. If the pressure is low, the problem could be either the pump or the filter. The filter for your vehicle averages about $12, so if the pressure is low, we start there.
Dec 17, 2011 at 11:58 PM
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