Took 2005 Expedtion to dealer for problems with starting. It does when hot or cold and not all the time. It seems to back fire in Air box when it does not turn over. The Dealer replace injecters, New plugs, fuel filter also replaced. Carbon was cleaned from engine. Dealer says something is causing to much fuel being pumped in when the fail start happens. They tell me they don't know what is doing it. So I picked it and am Stumped now on what to do??
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Re: Not starting all the time
If the dealer cant find the problem to a product they sell, makes me mad. They best find the 'something' that's causing it. By the way, it's my understanding that if you take an automobile back for the same issue 3 or more times and the manufacturer can not repair the problem, lemon law? Get a new truck. Make it a Toyota ;)
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What is the engine temperature? It may be that the thermostat is stuck open and the engine is running cold.It may also be sometheing stuck in one of the lines that moves to block it when the flow starts.
may check or have the dealer check for a crack in the housing for the fuel filter have seen it a few times specifically in heat cause every thing expands more it will start sucking air and lose pressure
These International engines can be difficult to diagnose without the proper tools; namely Ford's I.D.S., or Navistar's DLC.
As for the o-ring the dealer was hinting at, they may have meant the o-ring on the fuel injection pressure regulator. I have witnessed these leak and cause difficult or no starting. This component is located at the rear of the engine below the turbo exhaust supply tubes. A specialty socket is needed to replace it (35mm 12 point socket which resembles an O2 sensor socket), although replacement is most likely unnecessary considering that your vehicle does eventually start. If this were indeed the culprit, your engine would not start. There is a test port next to this regulator to test oil pressure (bolt with allen head relief). A high pressure gauge which reads greater than 5,000 psi is necessary to test at this port. When your engine doesn't start, try checking what the oil pressure is at this port. A minimum of 3,000 psi is needed for the engine to start and 5,000 psi is prefered
Other sources of this problem could be the intake air temperature sensor, oil temperature sensor, or wiring compromises. It's a shame the dealer didn't want to spend the time necessary to pinpoint your problem. So glad I'm out of that crooked industry.
You have a broken wire connection between the temperature control knob and the circuit board behind the center dash console. Vibration causes the failure and once the control knob gets loose the solder connection fails.
For someone that knows how to remove the dash unit and can re-solder a couple of new wires this fix should take no more than 1 hour. Make sure that you apply loctite to the heat control knob spindle nut when you re-assemble it.
The dealer quoted me 750 dollars to fix this issue and I found out that it's a common failure for this year. I fixed mine virtually for free but it took some tools and about an hour of my time.
Had the same problem with my Mazda6 awhile back. Took it to the dealer and they found the radiator wasn't holding pressure. They replaced the whole radiator under warranty (WHEW!). Not sure how to check for that kind of thing, but it's a start.
possibly you battery is no good go and get it checked some time batterys say there good but once you but some stress on it ,usllaly it fails right in front of ya ,, or maybe tis the truck has a bad ground by the starter you might want to check that too let me know what happens
My wife had same problem in 2005 yukon. Turn both temperture controls on dash all the way as warm as they will go, Wait about 1 or 2 mins and turn back to coolest setting. Cleared our problem right up. Do this with car running and air on.