Question about 2003 Ford Excursion
When you first start it is misfiring on one or more. i would get a tunup if you havent yet. spark plugs and gas filter.
Posted on Jan 03, 2013
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Posted on Jan 02, 2017
glow plugs preheat the fuel to help the engine start.....when its hot outside its not that bad...the colder it gets the harder it will be to start with bad glowplugs..
Posted on Nov 17, 2009
P0171------ system too lean bank#1
Po174------ system too lean bank#2
For these 2 codes, try cleaning the maf sensor (mass air flow), that is mounted in the big black hose that goes from the air filter housing to the throttle plate, if it is dirty, that will cause those 02 sensors to send a signal to the computor to lean the air fuel mixture. If cleaning it doesn't work, the sensors will probably need changing.
P0300---- Random/multiple cylinder misfire
P0316---- Cylinder misfire at start up---- first 100 revolutions.
On those 2 codes, you have to do some testing to find out why there is a misfire.
weak coil pack
fowling spark plugs/wires
Low fuel pressure
Posted on May 12, 2010
The problem is at the 5th cylinder and a misfire during start up based on the error code. Inspect first the said cylinder. Check if there is spark or if you need to have the plug replaced. It could also be a bad high tension wire. This may solve the 2nd issue which may have triggered it.
Posted on Sep 06, 2011
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