fuel pump module

Any faulty electrical circuit might cause that. I can't say for sure, one way or the other, that your fuel pump module is the problem?

Here is a video showing the module and how to replace it.

https://youtu.be/D1AyqeftAmA

Any applicable trouble codes? Has any work been done on the vehicle lately?

I looked at the wiring, there is about a dozen focus listed for that model year, not sure which focus you have? I looked at ZX3 S focus.

My bad, hit the wrong button. Diagram. There is also the fuel pump relay, couldn't get that in the same picture.

2005 Ford Focus 38000 miles
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About every third time i start it it blows the fuel pump fuse and continues to do so until something resets which usually takes a few hours. I have already replaced the fuel pump relay and the fuel pump itself.... any suggestions to what it might be?

If you can give us the exact model and engine size we can investige...there are quite a few Focus models!

It's the SE ZX4 with a 2.0 that has dual overhead cams

Auto or manual transmission?
2.0L/2.3L ENGINE WITH MTX-75 - LONG CRANK/HARD START -2005 Ford Focus...
Page 1 of 1
2.0L/2.3L ENGINE WITH MTX-75 - LONG CRANK/HARD START
TECHNICAL SERVICE BULLETIN
Reference Number(s): 05-9-16, Date of Issue:  May 16, 2005 FORD:2005 Focus
Related Ref Number(s): 05-9-16
ARTICLE BEGINNING
DESCRIPTION
LONG CRANK/HARD START - 2.0L AND 2.3L ENGINE WITH MTX-75 TRANSAXLE
ISSUE
Some 2005 Focus vehicles equipped with MTX-75 manual transaxles, may exhibit a long crank or hard start condition with no malfunction indicator lamp (MIL) and no diagnostic trouble codes (DTCs) present.
ACTION
Reprogram the powertrain control module (PCM) to the latest level using WDS release B36.12 and higher or B37.3 and higher. This new calibration is not included in the B37 CD. Calibration files may also be obtained at www.motorcraft.com.
WARRANTY INFORMATION
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage.
WARRANTY INFORMATION
Operation 050916A 2005 Focus 2.0L/2.3L With MTX-75 Transmission Check For Diagnostic Trouble Codes And Reprogram Powertrain Control Module (Do Not Use With 12650D, 12650D84) Description
Time 0.4 Hr.
DEALER CODING Basic Part No. RECAL
Condition Code 04
© 2007 Mitchell Repair Information Co., LLC.
http://www.ondemand5.com/mric/common/asp/printart.aspx
8/15/2008
This may or may not be the problem, when the fuse blows is it during cranking or after it starts and is running?

it is an automatic transmission and it has happened while driving down the highway.... that was the first time it happened, but every time after the fuse has blown on the crank

You'll have to use an ohm meter and trace the two wires shown from the PCM to the fuel pump driver module under the right rear seat, then out to the pump. One is black/white stripe the other is green/black stripe.

The PCM is on the right front at the bottom of the A pillar, at passengers feet.

I was driving with the A/C on, the car started jerking and losing power. It shut off completely and would not turn over. We took it in and they replaced the #15 fuel pump fuse and the fuel pump. The car was running good, but when we had the A/C on again, the car shut down and blew the same fuse. When we run the car without the A/C it runs okay with just a little shuddering, but now we're scared to use the A/C. What else could be the problem since we already got the fuel pump replaced? They replaced the fuel filter as well.

there is a seperate fuse for the a/c have them check to see if they are crossed. When turning the a/c on it is drawing violtage through the fuel pump fuse. They can take and put a tester where the fuse goes and check the ampreage draw with the a/c on and check with it off. That will tell if the a/c is drawing from the same fuse.

Sometimes my car will not start i cannot hear the fuel pump hum as usual on first turn of the key this will persist until i have left it to stand for an hour or soand somtimes overnight , it doesnt do it every time it can go weeks without it happening then it will do it again just the once and its ok again.I've had a code reader on it and there is no fault codes stored the engine turns over ok but no fuel gets thru.After its been left a while i can hear the pump and it starts .As a replacement pump is expensive i was wondering if it's a relay or sender module fault

When you turn the key to the on position without cranking the engine over can you hear the fuel pump run in the tank for 5 seconds?

https://www.2carpros.com/articles/car-cranks-but-wont-start

Please run down this guide and report back.

I have a Spark so the plugs coils etc are ok. theres no fuel at the fuel rail i has to be a pump related problem but because it it intermittant its proving difficult to solve as it can work ok for several weeks before doing again and it dosent matter what the outside temp is or how much fuel is in the tank .the car perfectly ok during the times in between the fault and is ok immediately after ?

Check the fuel pressure to rule out the fuel pump

could be wiring problems going to the sending unit

Last week I was driving my Ford Focus home from a job interview 150 miles. I filled up my 10 or 11 gallon tank the day before. I had put probably 250-270 miles on that day when I felt that car-just-ran-out-of-gas feeling. I was at 1/8 tank on the gas gauge and I figured I could make it 15 miles to the next town because the idiot light hadn't come on yet (the day before I drove with the low gas light on 10 miles to a town to fill up. Luckily, I got a ride and put 2 gallons of gas in my car. It started right up after sitting 30 minutes. I drove it 15 miles to the next town and put a few more gallons in and drive 40 miles home.

The next day after an hour or so of driving, I seem to run out of gas again, this time at 1/4 tank according to the gas gauge. Again I put in few gallons of gas, starts right up, I fill up at nearest station and have driven 150 miles since with no trouble.

The first time this happened I had just passed another vehicle. The second time was while I was passing. I just bought this car a few months ago with 41,000 on it. It was in an accident previously and the driver airbag, hood, side panel and passenger side headlight was replaced.

I talk to a mechanic the next day thinking it is the fuel pump, fuel filter, or maybe gas gauge. Mechanic says it's an engine problem as he knows someone that replaced the head, fuel pump, fuel pressure sensor and still has a bit of a problem. He concluded that I'll probably be fine if I keep above half tank. What do you guys think?

I don't mean to sound rude, but that is the dumbest thing I ever heard. What you questioned makes sense. What I would suggest is to check fuel pump pressure. I will provide directions. Replace the fuel filter. If the pressure is good, the fuel filter is new, then it is the gauge. I wouldn't say that if it wasn't the fact that the car started right up after you put a couple gallons of gas in it.

Here are the directions for checking fuel pressure. You will need a gauge. Most parts stores will lend or rent them to you.

https://www.2carpros.com/how_to/how_to_check_fuel_pressure.htm

Let me know what you find.

car runs rough only when gas pedal not pressed where is the fuel pump and can it cause this problem

Try cleaning out the idle air control valve and also the EGR valve and see what happens