Causes of slow acceleration?

Have a 1991 Dodge Daytona that is accelerate abnormally slow, and lacks power when going over hills--barely make it up. The engine sounds and runs fine when idling within park.

Important facts:

Fuel pump is making a constant "whining" noise when vehicle is running.

Car sat for two years. The "head" be replaced with a different one. It was running great for around a month until this most recent problem.

Oxygen sensor was lately replaced.

Has 210,000 miles.

Transmission seems fine.

Diagnosis: I'm not sure if it's a fuel problem (i.e. fuel pump, fuel filter, fuel injector), possibly a bad oxygen sensor (which be recently replaced as noted), or something as simple as the acceleration cable.

Please minister to. Need suggestions in diagnosing this one.

Thanks.

Car wont stay rot inevitability to hold...



Answers:    Check for a clogged in-line fuel filter. Follow the entire fuel chain, sometimes there is more than one. Often fuelinjected systems use a 2 micron elevated pressure filter at the fuel rail.

The computer will own a stored code in it if there's an emissions-related component failure-like the O2 sensor.

Perhaps the thing's jump timing?

Start off beside the fuel system, and work from there.

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If the fuel pump is wining I would dream up that is the problem. I would bring it to shop and own a pressure test done on it. Maybe sports car is just worn out and should be rebuild or put down.

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