Question about 1999 Ford Explorer
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Posted on Jan 02, 2017
SOURCE: Ford Escape 3L 2002 Rough idle
generally, when the engine is washed, water gets trapped behind the spark unit and stays there, creating a shorting path for spark plug current. best to dis-mount the spark unit (follow plug wires back to source) and dry and clean it thoroughly.
Posted on Jul 07, 2008
you might want to check your fuel injectors or your O2 sensors there are 2 of them 1 on each side of the block located on the pipes coming from the exhaust manifold
Posted on Apr 21, 2009
The mechanic should check on the idle .Because the Idle of the truck is adjusting by it self . That causes the truck to stop .check the Idle then lock it up to so that it will not adjust until it will make the truck stop .the main reason why the truck stop and pressure guage going down steadily is that no fuel enters the fuel pump when it adjust Idle by it self . It adjust by closing way or blocking the fuel to pass and go to the engine.then the engine dies .
Posted on Aug 22, 2009
Testimonial: "Thank you, jigsaw 9077"
You have a fuel injected car. Things that can cause too rich would be a bad altitude sensor like the map or mass air flow depending on which one you have.
Anything that would cause excess air to go into the exhaust system like a cracked exhaust pipe before the 02 sensor, or low compression, or a stuck open pcv valve, intake gaskets, throttle body base gasket.
Or a Throttle position sensor which is telling the computer you foot is on the gas when it is not.
Its possible you have a bad PCM,, or coolant temp sensor saying the motor is still cold as its warming up.
Its possible you have a vacuum hose somewhere on the engine with a big crack in it or its just inplugged and you dont see it.
But my first guess would be possibly a bad computer.
Try creating a big vacuum leak when its loading up. It should run better.
Also if you have an egr valve it could be stuck open a little causing excess air or an idle air control valve stuck open.
Does it clean up if you rev it up or does it blow black smoke reved and at idle. This could point towards the altitude sensor.
Posted on Dec 22, 2009
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