2005 Mercury Mountaineer "misfire under load" Questions

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...misfire under load? Intermittent misfire on cylinder 3 under load. Checked spark plugs and coils, replaced fuel pump cam follower and fuel injector, cleaned intake valves. Problem persists. Runs fine ...

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...misfire under load , loss of power new cop,s granatelli 25-3001mpg , new walker o2 sensors ( up stream ) at about 1000 rpm's runs smooth , under load and at idle misfire more under load - no ...

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...misfire Changed plug and coil pack no help Still missing under mild load I can drive with just using accellarator and do fairly well by feathering accelarator However if driving in cruise on level ...

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misfire under load, codes p0300 and p0302 . had coil 2 and all spark plugs replaced. A few days later check engine light came on and code p0352 came up . car runs prefectly no misfire idleing or under

Question about Mercury Mountaineer

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...misfire under load replace the plug wires this will fix your secondary ignition breakdown. the egr code is due to a bad dpfe sensor which is for back pressure on egr valve.this will not cause

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...misfire ? it runs rough only under a load. when in idle position no problems but around 55 mph it starts cutting back and i have to let off the the throttle. need some direction please Swapping coils ...

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...under load, number three cylinder was missing and give misfire code. Replaced plug and reset codes, runfine for few minutes then started missing again, swapped coils and still missing, compression ...

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...under load. 2005 model. Find the bad sparkplug or wire; or miswired plugs; or distributor foolishness (carbon buildup, dirt, cracked component in there at bottom....) Maybe there's a leak or sediment ...

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...with multiple cylinder misfiring message. Removed distributor checks ok still misfiring under load. check your wires they may be frail. also check your spark plugs they may not be gaped

Question about Mercury Mountaineer

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...5 misfire on cold start. Misfires under light loads up to about 2,000 RPM Poor fuel economy black soot all over the rear bumper cover. I would check the coil those wires are probably on the same ...

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