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lilwoman112002
Novice
Aug 13, 2011, 11:25 AM
Post #1 of 11
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99 Expedition wont start
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I have a 99 expedition 5.4 4wheel drive. I had to replace the dpfe senser. After that was done i tryed to start it and it made a loud clanging noise so i stopped for a minute then tryed again and all it did was click. So we replaced the starter/solenoid combo and the solenoid on the firewall but it still does the same thing. can someone plz help me figure out what is wrong with it? Thanks Tara
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Discretesignals
Ultimate Carjunky
/ Moderator
Aug 13, 2011, 12:14 PM
Post #2 of 11
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Re: 99 Expedition wont start
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What was the reason for replacing the DPFE? Did you disconnect the battery or do anything else when replacing the DPFE?
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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lilwoman112002
Novice
Aug 13, 2011, 1:12 PM
Post #3 of 11
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Re: 99 Expedition wont start
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Yes we disconnected the battery. My truck was acting as if I had bad gas in it so i drained it the put some seafoam in it and fill it back up but it was still acting up and a friend of a friend worked for ford said that i need to replace the dpfe senser so we did that.
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lilwoman112002
Novice
Aug 13, 2011, 1:15 PM
Post #4 of 11
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Re: 99 Expedition wont start
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before we replaced the it was hesitating and some smoke coming out the exhaust and it was ticking
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Hammer Time
Ultimate Carjunky
/ Moderator
Aug 13, 2011, 2:22 PM
Post #5 of 11
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Re: 99 Expedition wont start
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The DPFE has absolutely nothing to do with the engine performance. You need to go back over what you did because somehow you triggered this problem.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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lilwoman112002
Novice
Aug 13, 2011, 2:42 PM
Post #6 of 11
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Re: 99 Expedition wont start
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we have gone over it several times. before we replaced the dpfe it would still start up and run. it just ran like crap. whatever that clanging noise must be something that has kept it from turning over. someone said that it may have thrown a rod. but we had taken off the gasket cover and there are no holes it and there is nothing laying down in the pan. i am at a lost here. not really sure as to what i should be checking now.  Any suggestions?
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Mr.scotty
Enthusiast
Aug 13, 2011, 2:46 PM
Post #7 of 11
(3033 views)
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Re: 99 Expedition wont start
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Do a compression test on all cylinders, if theres a broken rod there will be 0 psi on that cylinder.
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Your only as good as your tools!
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lilwoman112002
Novice
Aug 13, 2011, 3:16 PM
Post #8 of 11
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Re: 99 Expedition wont start
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how can i do a compression check?
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Discretesignals
Ultimate Carjunky
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Aug 13, 2011, 3:18 PM
Post #9 of 11
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Re: 99 Expedition wont start
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They won't be able to do a compression test if they can't get the starter to crank the engine.
Did you try rotating the crank by hand. You'll have to use a socket on the crankshaft and a long break bar. If you take the spark plugs out, it will be easier to turn.
Hopefully it isn't locked up.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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lilwoman112002
Novice
Aug 13, 2011, 3:31 PM
Post #10 of 11
(3023 views)
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Re: 99 Expedition wont start
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is there anyway that we can do a compression test here at home?
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Discretesignals
Ultimate Carjunky
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Aug 13, 2011, 3:38 PM
Post #11 of 11
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Re: 99 Expedition wont start
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If the starter motor doesn't even attempt to crank the engine( spin the crank), you won't be able to perform a compression test. If something in the bottom of the engine let loose and had jammed the crankshaft from turning, the starter motor won't be able the turn the crankshaft. All your hear is the starter making a clunk noise when turning the key.
That's why you should try to see if you can turn the engine by hand. To see if the crankshaft is jammed for some reason.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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