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98 expedition looses power at about thats all it will go up to what could it be ? An where are the spark plugs I cant find them?

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Many things for the expedition loosing power, check if you have a leaking exhaust manifold, don't go to the tune up before you are sure it is not the exhaust manifold, if the check engine light is on, it means that the car is miss firing, you can get it check at the Autozone or advance auto parts for free. If you are looking for the spark plugs they are usually under the coil pack. You can see in the below image the spark plug is under the coil.
98 expedition looses power at about thats all it - 25289808-as3mf3zfobartwtqhkvz22bs-5-0.jpg

Posted on Nov 19, 2014

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Posted on Jan 01, 2011

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98 expedition 5.4 4x4 with dual a/c..sputters and shakes while idle and driving...please help me ! i have replaced 5 of the 8 spark plugs till i can get to the back 3 (pain in the ****) no change not even...


When you know the symptom who needs codes?And if there was a code it probable say lean bank 02. why simple you have a misfire. the smell rich exhaust the shake and sputter in drive. 2 causes the Expedition suffer from ,An open EGR valve.If you can change a fuel filter and change a spark plug you can test this. when the engine is running and misfire at idle and the vehicle is warmed up and at operating temperature. Turn off engine. Go to the EGR is it hot to touch. because if it is it open and this the the culprit.Another misfrie is from COP (coil on plug.)When you change the spark plug where any of the spark boot torn or worn that spark can go through. Or even a faulty COP will do this .To find it you have the engine running and lift one COP out of the cylinder and listen for a engine drop if the engine RPM drop the COP is good if no change in engine the COP is bad. By the way 600rpm in drive is low

Feb 27, 2012 | 1998 Ford Expedition

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I changed the bad coil on my 2002 expedition but now i hear a popping sound when i step on the gas........can you help?


I would recheck the coil wires from the plugs and make sure they are completely pushed down.I had the same problem on my Escort.Also push down on the spark plug wires.When I try to pull off the spark plug wires,almost EVERY time one breaks and i have to replace them.Either a loose coil wire or a loose spark plug wire will cause the popping.

Jul 22, 2010 | 2002 Ford Expedition

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Where are the spark plugs located


the spark plugs are located on either side next to the intake manifold you will need to remove the coils to get to them

Sep 25, 2009 | 2000 Ford Expedition

1 Answer

2001 Ford Expedition Blew Spark Plug, fixed that now won't shift.


On the trans you have a shifting module that might need replace just make sure that the shifting lever is aline with the mark on the shifting module.(Drivers side)
As far as the plug goes you can so thread lock tight to keep it in.

Apr 22, 2009 | 2001 Ford Expedition

2 Answers

98 Expedition # 3 Misfire


bad spark plug wire coil pack that the most common thing smell and shacking sure its not running on all cylinder to find out what broken start the engine disconnect at coil pack cylinder number 3 be carefull not to get a shock disconnecting the wire if lots of spark to it back disconnect wire at the plug when removing it should here spark jumping if good change the spark plug it should fix it if not let me no good luck pierre

Sep 17, 2008 | 1998 Ford Expedition

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