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I have a 85 f250 and have replaced the fuel pump and still have nothing past idle help please, the truck started to loose power slowly and then wouldnt go over 10,mph
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Sounds like your fuel pump starting to die. It is not getting enough gas under heavy acceleration which is 100% fuel pump slowly dying. At start up it might not be building up enough fuel pressure to feed the system but the shot of ether and engine cranking helps pressure the system just enough for the fuel pump to trickle the gas and run the engine at low rpms.
not to sure on model but could be injectors or the inbjector pump not fuel pump as this only send fuel to engine injector pump send fuel to injectors hope this helps
SOUND LIKE IDLE SPEED TOO LOW HAVE IDLE SPEED CHECKED. REPLACE FUEL FILTER IF IT HAS BEEN A LONG WHILE A FAULTY TRANSFER PUMP OR FUEL INJECTION PUMP WILL CAUSE STALLING PROBLEMS
mcdevito75 here, Could be a dirty fuel fliter, remove fuel inlet toarb, crank engine but don"t start, container of 1 pint of gas should pump out from detached carb. fuel inlet, if not replace fuel pump. Very high idle and very low idle could also be a major vacumn leak, check all vacumn hoses, also check intake manifold, spray soapy water around intake manifold try to start, if you see water sucked in or engine now starts, there"s your problem, a vacumn leak.
it IS poaaable for both pumps to go out at the same time are you getting power through the inertia switch?these also had a problem with the fuel pump plug ins coming loose on top of the tank.should be a TSB (technical service bullitin) on this.
Hello,
The car may be hard to start because it may need a normal tune-up. If the spark plugs are pretty used, they will slowly stop burning as much fuel because the spark slowly gets lesser and lesser. On a cold day the fuel is harder to ignite with a small amount of spark.
Normal idle when its cold means that your cars idle is probably too high. If you lower the idle, the choke on a cold day will keep the idle a little higher until the motor warms and then it will kick back off. If the idle is too high, it will run very rich, smothering itself with fuel, and causing the idle to stay low. When the car warms, its creating better spark when its warm, and with the idle being too high its running at a fast idle.
The car wont start sometimes can be the cause of a few things. If the ground is bad on the fuel pump, it wont make a good connection sometimes for when you turn the key on, the fuel pump dont pump the fuel to the engine. Another one can be that your accessory switch can be loose going to the fuel pump. I think its your ground though. Good luck! Hope this helps.
Have a nice day.
-Steve
Replace the idle air control valve. Mine just did it today the 15th of August. I replace the Idle air control valve and problem solve. I have a 2000 Expedition 5.4 liter.
tighten all fuel connections from filter to injector pump to injectors because if air is allowed in (between pressure pulses) then power loss will occur.
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