Lack off acceleration

10

Asked by Sep 17, 2016 at 05:46 PM about the 2001 Ford Expedition XLT

Question type: Maintenance & Repair

I'm having problems with my expedition not
accelerating. I haved changed many parts like spark
plugs, coils, MAS sensor, IAT sensor, fuel filter, air
filter and had a computer diagnostic done. And still
the same. I need help

9 Answers

7,985

Bad crank shaft sensor will make it do that, check it or replace it, it's located on lower front passenger side bolted to timing chain cover next to ur ac compressor

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10

I have checked the crankshaft sensor and when I removed it, it had oil and dirt. It's that normal?

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7,985

Oil is, too muck gunk is a sign of lack of oil changes

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10

Thank you very much

10

Irodri911 is the crankshaft makes my expedition lack of horse power after being running for 15 - 20 minutes.?

7,985

Well, there's many things than can cause it, one is the crankshaft positioning sensor, and the others that u mentioned also vacuum leaks or a dirty throttle body

10

The vehicle has no vacuum leaks and everything else are clean. Do you think it might be the fuel pump.

7,985

Check fuel pressure to see if it's ok. When was the last time u replaced fuel filter, if u haven't, u may want to do it as a routime maintenance anyway

7,985

Check fuel pressure to see if it's ok. When was the last time u replaced fuel filter, if u haven't, u may want to do it as a routime maintenance anyway. Filter is located under truck by driver's side, u'll need special tool to release hoses from filter, just ask for it at ur local auto parts store

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