i have my ford expedition xlt.... i already changed the spark plug fuel pump cleaned fuel filter and still i felt the rough idle...what should i do? one thing that i haven't change is the fuel filter... but i already cleaned it by the use of air compressor. when i started the engine the rpm goes up and down and then stall

Asked by shaider Aug 19, 2015 at 04:32 AM about the 2000 Ford Expedition XLT

Question type: Maintenance & Repair

i have my ford expedition xlt.... i already changed the spark plug fuel pump cleaned fuel
filter and still i felt the rough idle...what should i do? one thing that i haven't change is the
fuel filter... but i already cleaned it by the use of air compressor. when i started the engine
the rpm goes up and down and then stall.

4 Answers

45,110

Check air filter and clean throttle body, clean or replace IAC ( idle air control ) valve or mass air flow sensor depending on which one your vehicle has and add Lucas Fuel Injector Cleaner to gas tank.

2 people found this helpful.
45,110

Also would replace fuel filter.

1 people found this helpful.

Check the notorious pvc and tube on the back of the intake any cracks along it will certainly cause a rough idle. Any coils that are not tightly fitted down as well.

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