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Old 02-27-2011, 01:38 AM   #1
Jamesk
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2005 Focus odd noise from fuel pump

I have a 2005 Focus with a 2.0 and when i turn the key on it makes an odd noise. It sounds like the fuel pump is making a loud noise that i cant really explain. Also since this noise has been happening the car has been taking longer to fire when cranking. Maybe my fuel pump is weak? Any info would be greatly appreciated.


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Old 02-27-2011, 09:26 AM   #2
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The pump should make a barely audible high pitched humming noise when the ignition is turned on that should last about 5 seconds. It is the pump pressurizing the fuel system. It should not be audible after that with the engine running.

Faulty fuel pumps - for which there was a TSB and an unofficial "recall" of sorts (Ford #03N01) - were in very early cars. An indication of a faulty fuel pump is stuttering and hesitation in hard right hand cornering with a less-than-full tank.

Try changing your fuel filter first. It should be done every 25K and is usually neglected. It'll put extra strain on the pump if it's clogged.
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Old 02-27-2011, 09:35 AM   #3
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Wait until the sound stops before you try to start the car, that might keep down your starting time. Like BC said if your fuel pump runs for more than 5 secs- that's a good sign that you need a new one. A new fuel filter might help, but you should start saving up for a fuel pump job even if it gets better after a new filter.

I just checked Rock Auto: Fuel pump prices there range from $165 to $320, and both of those are full assemblies which means it comes with a new sender, float, arm, hoses, pickup filter- everything. Those are usually the most expensive, but most reliable route to take. The more expensive part is the Motorcraft part. If you want to stick to a MC part, which is not a bad idea, we can hook you up with a dealer that gives us incredible discounts, and that should get the assembly down in price closer to the $165. That's for DIY. Now if you're going to take it into a shop somewhere, I'd want to check to see what kind of parts they are going to use in your car, and make sure you don't end up paying full assembly price for just a pump. Prices for just a pump would start at $100 and go up from there. I'd expect a shop to charge somewhere between $100 and $150 for just a pump. In this case I'd insist that they change the pickup filter, any in-tank rubber hoses (plastic is ok to reuse), and the fuel filter. The fuel filter should be changed with any fuel pump job- DIY or otherwise. If you go DIY, be sure that a new fuel filter is on the same receipt as the fuel pump to insure your warranty is valid.

Here's a fuel pump How-To Thread if you're interested in DIY
http://www.focusfanatics.com/forum/showthread.php?t=153562
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Old 08-17-2011, 04:54 PM   #4
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I've been told my fuel pump is going bad and I hear a strange noise when turning the key halfway and pausing a few seconds. It only happens when my car has been sitting for at least an hour. Otherwise, it drives just fine. I noticed a bit of hesitation the other night when it was really humid and I was turning left. Otherwise, it's doing fine. Guess that means I have time to save up money to get it fixed.
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Old 08-17-2011, 05:11 PM   #5
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If you DIY, you'll have to purchase a new fuel filter at the same time as the pump to maintain the warranty that comes with the pump.
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Old 08-17-2011, 05:18 PM   #6
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I just got a new fuel filter put in last week. Figured it was overdue and couldn't hurt. I'll be taking it someplace to get fixed as I know very little about cars. The most I do to my car is fill it with gas. On the off chance I find a friend to do it I'll remember that though.
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Old 08-18-2011, 03:52 PM   #7
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Hey Danaw,

If you decide to have your starting issue diagnosed at the dealer, mention this to them as well, so they can diagnose it in one trip. That may help save some time, and you'll know exactly what's going on.

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Old 08-18-2011, 09:51 PM   #8
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I haven't gone to a Ford dealership but my car was diagnosed with a bad fuel pump. I've just been trying to get 2nd opinions. EVERYONE who has heard my car says it's the fuel pump too. Only the people have haven't heard my car say it's NOT the fuel pump. For now I'll just drive and see what happens.

My car is an automatic. I can't drive a stick shift so I don't think that TSB applies to my car. (I'd give myself whip lash!)
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Old 08-18-2011, 10:20 PM   #9
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Is there a how to on changing the fuel pump and or the fuel filter?

Danaw how many miles? im wondering how many miles they go before they fail. Im trying to keep track of the common problems on the 05-07 and how many miles those who have failures have on the failed parts. Just so ill know what to expect. I know its all hit and miss but i just want to be aware of them when i reach the same miles.
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Old 08-18-2011, 10:29 PM   #10
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That's a good idea! I had just under 40,000 when the problem started. I just went over 40,000 miles last week. Hopefully I'll be able to save up money before it dies. I'll let you know. It WILL be kinda interesting to see how long it lasts.

While I'm here, was wondering about the "timing belt" or "Timing Chain". My old Toyota had a no-interference engine so I didn't have to worry if it went out while driving. I presume with Fords you MUST get it changed before it dies. When should you get it changed?
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