Question about 2003 Ford Expedition
2003 Ford Expedition hesitates & stalls, problem started about 7 months ago, changed the plugs & that seemed to help for about 5 months. started up again about 2 months ago & have been hard up for cash so I put off trying to fix it, but now I have no choice. could it be the plugs? if not what else could it be?
Check for leaking valve cover gaskets,next to the spark plugs, putting oil near the ign coils. You absolutely have to scan the veh for codes and look at all the sensor values etc. Including putting an oscilloscope on all sensors. The Throttle Position Sensor is a possible and I could go on. Now,do not throw parts at it. Never replace anything just because of a code that is set. Codes do not mean a bad part, just an out of range sensor etc over a number of drive cycles. You have to spend lots of time and if you do not have the up to date knowledge on todays veh systems your done before you start. Don't mean to be hurtful but very few people can solve these issues including half the auto repair industry because there is no training for the most part and no one understands basic electricity or electronics. Todays vehicle are not just mechanical alone as back in the 1960's
Posted on Feb 06, 2010
Replace sparkplugs ,plugs ,and might need to replace sensor mounted on the throttle body but first do the less expensive.
Posted on Feb 06, 2010
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Posted on Jan 02, 2017
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