fuel pump running constantly?
12-28-2005, 10:05 AM
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fuel pump running constantly?
When I turn on the ignition, a pump runs constantly until I start the engine. It will run for several minutes if I let it. I don't remember it doing that before. Seems like I remember it running for a few seconds then shutting off. Is it supposed to run constantly before I start the engine? How do you know if the lift pump is going out? I assume that's what I hear running when I turn on the ignition.. Arlon
12-28-2005, 02:39 PM
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On my 05 as soon as I turn the key on it will run the lift pump for approx. 20 seconds, I do not have to bump the starter like on the 2nd gen trucks. There is also a ticking noise which I do not know what that is, sounds almost like ignition spark for spark plugs. Hey maybe I have the new spark plug diesel 
12-28-2005, 06:32 PM
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Originally Posted by Arlon
When I turn on the ignition, a pump runs constantly until I start the engine. It will run for several minutes if I let it. I don't remember it doing that before. Seems like I remember it running for a few seconds then shutting off. Is it supposed to run constantly before I start the engine? How do you know if the lift pump is going out? I assume that's what I hear running when I turn on the ignition.. Arlon
Cameron
12-29-2005, 08:12 AM
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Originally Posted by ck1
thank you.....i thought i was on crack the other day when my did the same thing....poop....does this mean trouble with the lift pump to come?????
Cameron
Cameron
Prolly the LP itself though.
Either way, not something to ignore.
12-29-2005, 08:22 AM
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There is also a ticking noise which I do not know what that is, sounds almost like ignition spark for spark plugs. Hey maybe I have the new spark plug diesel
12-29-2005, 09:21 AM
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I don't think it's the grid heater because it will do that even on warm days when the grid heater does not cycle.
The grid heater has more of a high pitched whine or hum.
The grid heater has more of a high pitched whine or hum.
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