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#11
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Fuel Pump Timer? Pump Location?
> wrote in message ... aside question, not to interrupt the poster's original question, but I had to have a fuel pump installed on a '93 6 cyl. 3.3 chrysler t-c minivan - twice. 600 bucks a pop. and, another engine same kind, same year model, has never had any fuel pump problems - why? just curious. what can cause an electric fuel pump in the gas tank to fail? mho vfe >double dog dare you, sound familiar? >to reduce your driving by - 10%. Other than contamination there is the added heat of excessive current when the pump has to work against a partially clogged fuel filter. Constant strain equals early failure. -- Kevin Mouton Automotive Technology Instructor "If women don't find you handsome, they should at least find you handy" Red Green |
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#12
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Fuel Pump Timer? Pump Location?
"Nehmo" > wrote in message oups.com... >I successfully changed the fuel pump on my 2001 Ford Ranger 3.0L 126" > wheelbase, flex-fuel truck [1]. But I have some unanswered questions, > and they'll plague me the rest of my life if they remain so. > > Is there a fuel pump timer? How does it work, and where is it? > Timer? There is no timer for the fuel pump. > If indeed, the pump is cooled by fuel going *through* the pump, what's > the advantage of placing the pump *in* the tank? > It's actually cooled by the fuel surrounding it. External pumps are cooled by fuel going through, but internal pumps are cooled by fuel surrounding them. Obviously there is a certain amount of cooling by the fuel passing through, but the pump is submerged, and that's where the primary cooling is accomplished. > How come Ford has different pumps for different wheelbase trucks that > are the same otherwise? How can the wheelbase, differing by a few > inches, have anything to do with the pump? > That's a good question. I'd guess that the tank is different on different wheelbase trucks, but that's only a guess. |
#13
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Fuel Pump Timer? Pump Location?
Jeff Strickland -
> It's actually cooled by the fuel surrounding it. External pumps are cooled > by fuel going through, but internal pumps are cooled by fuel surrounding > them. Obviously there is a certain amount of cooling by the fuel passing > through, but the pump is submerged, and that's where the primary cooling is > accomplished. I saw a diagram, which someone in one of these NGs posted, of a similar fuel pump. It appeared the motor was in the center of a cylinder and fuel driven by an impeller went around the motor as it went up through the cylinder. Thus the *motor* is submerged in the path of the fuel. Also, the pump I have, which is a little smaller than a toilet paper tube, comes with a rubber quarter-inch-thick sleeve to cushion the mounting clamp (maybe it quiets the pump too). If the designers expected liquid coming in contact with the exterior of the pump to collect heat, they would have at least made holes in the sleeve. -- (||) Nehmo (||) |
#14
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Fuel Pump Timer? Pump Location?
doesn't the fuel pump "run" according to need, like an ac thermostat,
if there is "no call" for fuel, it doesn't run?? mho vテ |
#15
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Fuel Pump Timer? Pump Location?
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#16
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Fuel Pump Timer? Pump Location?
>Less expensive to make a pump that >does not need to provide lift (
suction to >pull gas from the tank). YEAH, you bet, until it comes time to replace it, then, the honeymoon is over.:--) AND, why does a tank pump run 150-200 bucks, plus a gouge for installation, and a hang-on suck pump runs - quite a bit less? mho vテ |
#17
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Fuel Pump Timer? Pump Location?
>The "flex-fuel" - meaning can take either >methanol+gasoline mix or
straight gas, >part is indicated by the 8th character of >the VIN - V for flex-fuel - U for only >straight gas. === AND, when a vin number has neither an "U OR "V" for the 8th character, but a "X" - what does the "X" indicate? mho vテ |
#18
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Fuel Pump Timer? Pump Location?
>Other than contamination there is the >added heat of excessive current
when >the pump has to work against a partially >clogged fuel filter. >Constant strain equals early failure. ==== 10-4, I buy that, but that didn't seem to be the case - either time. thanks for your comment, I'll watch it. mho vテ |
#19
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Fuel Pump Timer? Pump Location?
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#20
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Fuel Pump Timer? Pump Location?
>How about an example of "quite a bit >less?"
==== you surely aren't serious? camshaft driven pumps use to cost 10-15 dollars when they were in vogue, probably don't make them anymore, electric pumps 40-50 dollars - tank pumps today run 150-200 bucks, but you must take into consideration that the - pumps and present day fuel systems act synergistically, new design, requiring a different configuration all together. mho vテ |
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