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Car Forum / Ford / Ford Mustang / January 2006Very noisy fuel pump
Over the last month the fuel pump has progressively gotten noisier. Might it be on its last legs? Are they difficult to replace (91 LX 2.3L)? John > Over the last month the fuel pump has progressively gotten noisier. > > Might it be on its last legs? > > Are they difficult to replace (91 LX 2.3L)? depends on what you'd call difficult... lotsa gas sloshing around. never do it in a garage this time of year, i'd say let a pro do it.  SignatureYeh, I'm a Krusty old Geezer, putting up with my 'smartass' is the price you pay..DEAL with it! > Over the last month the fuel pump has progressively gotten noisier. > > Might it be on its last legs? Definitely. Consider yourself lucky for the warning. Many times they just die with no warning and leave you stranded. > Are they difficult to replace (91 LX 2.3L)? If you consider dropping the fuel tank in order to get to the pump difficult, then let a shop so the work. > > Might it be on its last legs? > > Definitely. Consider yourself lucky for the warning. Many times they > just die with no warning and leave you stranded. Yea, although Ford pumps are noiser than most others. But it probably should be done while it still runs. What I find interesting about all this is that the pump is one price and the fuel pickup is another price and you have to have BOTH to get the pump warranty. The price of the fuel pickup is pretty high when you consider it's just a small plastic screen. I guess they need to make their money somehow..... All the Ford branded pumps I get are complete.... however, many aftermarket pumps are supplied just as you describe... >> > Might it be on its last legs? >> [quoted text clipped - 7 lines] > fuel pickup is pretty high when you consider it's just a small plastic > screen. I guess they need to make their money somehow..... When I did my fuel pump on my Fox, Ford wanted me to by the whole thingamabob, not just the pump. 200+ bucks IIRC versus 90 something (in 2002). *BUT* it was a really easy job. Hardest part was getting the gas out (NOT HARD - especially if the car is running!) Read the link below - this was when I swapped the tank - baffle broke in the stock tank on me so I replaced it: http://groups.google.com/group/rec.autos.makers.ford.mustang/browse_thread/threa d/36b6b4f119159964/83b3a0600ac0565e > All the Ford branded pumps I get are complete.... however, many aftermarket > pumps are supplied just as you describe... [quoted text clipped - 5 lines] >>fuel pickup is pretty high when you consider it's just a small plastic >>screen. I guess they need to make their money somehow..... >> Over the last month the fuel pump has progressively gotten noisier. >> [quoted text clipped - 7 lines] > If you consider dropping the fuel tank in order to get to the pump > difficult, then let a shop so the work. One other thing, until you get it fixed don't let the fuel level in the tank go below the 1/2-3/4 mark. The pump is surrounded by the gas in the tank and it is what keeps it cool. Letting the fuel go low lets the pump heat up and increases the chance of it failing. > One other thing, until you get it fixed don't let the fuel level in the > tank go below the 1/2-3/4 mark. The pump is surrounded by the gas in > the tank and it is what keeps it cool. Letting the fuel go low lets the > pump heat up and increases the chance of it failing. AGAIN!!!? Is it or is it not an axial flow pump? I can see the reduction in pump cooling in 100 deg weather when fuel temps rise and there's limited cooling... but he's in canada and it aint hot. To the reverse, running the tank low makes the job a LOT easier! But remember, it's the fumes that explode, not the liquid. So STILL let a shop do it... good money spent though you may grit your teeth. SignatureYeh, I'm a Krusty old Geezer, putting up with my 'smartass' is the price you pay..DEAL with it! well said backyard..... >> One other thing, until you get it fixed don't let the fuel level in the >> tank go below the 1/2-3/4 mark. The pump is surrounded by the gas in [quoted text clipped - 14 lines] > So STILL let a shop do it... good money spent though you may grit your > teeth. Actually, no it wasn't. ;) > well said backyard..... > [quoted text clipped - 16 lines] >> So STILL let a shop do it... good money spent though you may grit your >> teeth. What is it causes problems when it overheats Mike? The jacket or the bearings? Does the tank fuel cool the bearings or does fuel flow cool and lube the bearings? Engage some of that Engineering knowledge. Like I said; IN THIS CASE the latent fuel temp is moot! SignatureYeh, I'm a Krusty old Geezer, putting up with my 'smartass' is the price you pay..DEAL with it! > What is it causes problems when it overheats Mike? Could be a number of things. If the pump is working harder to provide fuel then the it consumes more power. If it consumes more power then it will run hotter which increases the odds of a bad pump failing sooner. Just like any other electric motor. > The jacket or the bearings? > > Does the tank fuel cool the bearings or does fuel flow cool and lube the > bearings? The simple questions is will the pump run cooler submerged in a liquid or suspended in a gas? My bet is on the liquid. Would you freeze to death faster in 30 degree ice water or 30 degree air? > Engage some of that Engineering knowledge. I haven't done that since leaving college 20+ years ago. ;) > Like I said; IN THIS CASE the latent fuel temp is moot! Maybe and then maybe not. I would error on the side of caution and run with a nearly full tank until the pump is replaced. It might make the difference between driving the car to the shop or having it towed. > What is it causes problems when it overheats Mike? > [quoted text clipped - 6 lines] > > Like I said; IN THIS CASE the latent fuel temp is moot! moot moot moot SignatureOh, you are out of your rabbid assed mind.- KJK >> Like I said; IN THIS CASE the latent fuel temp is moot! > > moot moot moot Shut up and Pass, dammit! SignatureYeh, I'm a Krusty old Geezer, putting up with my 'smartass' is the price you pay..DEAL with it! Look. Michael's got a P.E. Don't argure with him. (JUST KIDDING! - BOTH OF YOU!) > What is it causes problems when it overheats Mike? > [quoted text clipped - 6 lines] > > Like I said; IN THIS CASE the latent fuel temp is moot! I wish some local government officials would take that attitude. :) > Look. Michael's got a P.E. Don't argure with him. > [quoted text clipped - 10 lines] >> >> Like I said; IN THIS CASE the latent fuel temp is moot! >> One other thing, until you get it fixed don't let the fuel level in the >> tank go below the 1/2-3/4 mark. The pump is surrounded by the gas in [quoted text clipped - 7 lines] > cooling in 100 deg weather when fuel temps rise and there's limited > cooling... but he's in canada and it aint hot. I guess a lit match isn't hot either? What makes for a better heat dissipater a liquid or a gas? The liquid will draw more heat from the pump. Air is actually quite a good insulator and I bet the pump can still get quite warm especially if it is in its death throws. > To the reverse, running the tank low makes the job a LOT easier! How is this possible? The pump discharge is at the top of the tank and if the tank is near empty it has additional head to overcome to draw the liquid to that point verses the tank being full. This in turn requires the pump to work harder. To simplify the theory, which would require more effort, pulling a bucket of water up a 100' deep well or a 10' deep well? > But remember, it's the fumes that explode, not the liquid. True but I don't see the relevance of this here. > So STILL let a shop do it... good money spent though you may grit your > teeth. I agree completely on this point. >>> Over the last month the fuel pump has progressively gotten noisier. >>> [quoted text clipped - 12 lines] > the tank and it is what keeps it cool. Letting the fuel go low lets the > pump heat up and increases the chance of it failing. By the same token, if it actually fails when the tank is pretty full, it can be a supreme pain in the rump to pull the tank when it's that heavy with fuel. My suggestion is to just run it down to 1/4 tank (or a little less) and take it to a shop unless you've got access to a lift. This definitely isn't a job I'd want to do on ramps on a cold garage floor.... Cheers, >>>> Over the last month the fuel pump has progressively gotten noisier. >>>> [quoted text clipped - 19 lines] > This definitely isn't a job I'd want to do on ramps on a cold garage > floor.... My comment was made in the light of the pump not being fixed. It is quite easy for the shop to drain the tank and in many ways I would ask them to in order to remove any sediment accumulated in the bottom. However, with the price of gas nowadays it isn't the most economical of decisions to roll into the shop with a full tank. >>> Over the last month the fuel pump has progressively gotten noisier. >>> [quoted text clipped - 12 lines] >the tank and it is what keeps it cool. Letting the fuel go low lets the >pump heat up and increases the chance of it failing. I'd run it as low as possible before doing the job. I'd get a small can of gas and put it in the trunk, then run the car until it stalls (might want to anticipate it will stall.. so better not drive freeways. when it stalls, put in a little gas to make it home and start the job. The more gas in the tank the tougher it is... an empty or almost empty tank should make it a piece of cake. >>>> Over the last month the fuel pump has progressively gotten noisier. >>>> [quoted text clipped - 16 lines] > start the job. The more gas in the tank the tougher it is... > an empty or almost empty tank should make it a piece of cake. I guess no one knows how to siphon gas from the tank? >>>>> Over the last month the fuel pump has progressively gotten noisier. >>>>> [quoted text clipped - 18 lines] > >I guess no one knows how to siphon gas from the tank? Well I'm sure they do but.. maybe they don't like the taste of gas in their mouth...:-) >>>>>> Over the last month the fuel pump has progressively gotten noisier. >>>>>> [quoted text clipped - 19 lines] > Well I'm sure they do but.. maybe they don't like the taste of gas in > their mouth...:-) Never hurt me and if you're good at it you'll never know what gas tastes like. ;) > Over the last month the fuel pump has progressively gotten noisier. > [quoted text clipped - 3 lines] > > John No it's an easy ten minute job. It's getting the fuel pump cover off and back on that's a real bitch.... SignatureOh, you are out of your rabbid assed mind.- KJK >> Are they difficult to replace (91 LX 2.3L)? >> >> John > > No it's an easy ten minute job. It's getting the fuel pump cover off > and back on that's a real bitch.... Okay, I'll play... that's only if you dont have a pair of sawhorses and a hoist. ;) SignatureYeh, I'm a Krusty old Geezer, putting up with my 'smartass' is the price you pay..DEAL with it! Thank you for all the replies! I will defer this one to my mechanic. This thing is starting to cost me a few bucks..., but its still cheaper than car payments, so I guess I will keep her for now! Have you checked the fuel filter? > Over the last month the fuel pump has progressively gotten noisier. > [quoted text clipped - 3 lines] > > John > Have you checked the fuel filter? No, but over the last few days it has warmed up here considerably (by about 15°C from -2°C to around 13°C) and the noise has gone away? Before you go doing a remove & replace on the tank and pump try replacing the filter. > > Have you checked the fuel filter? > > No, but over the last few days it has warmed up here considerably (by about > 15°C from -2°C to around 13°C) and the noise has gone away? I had my fuel tank pump replaced a while back too. It started making more and more noise and was getting annoying. It turned out that the little relay under the driver's seat that turns the pump on and off was hanging up and the pump would stay running after you shut off the motor. One time it ran the battery down. Who knows how long that was going on but I replaced the relay just before having the pump replaced. The parts guy said there were a lot of these faulty relays being replaced. I even took it apart and got the contacts to hang up and stay closed by turning it on and off repeatedly with a power supply. I think ford should have had a recall on that item. Fred 89 LX 5.0 > Before you go doing a remove & replace on the tank and pump try replacing > the filter. [quoted text clipped - 4 lines] > about >> 15°C from -2°C to around 13°C) and the noise has gone away? |
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