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Old 11-10-2013, 12:40 AM   #1
LiciouzSVT
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Help with hesitation above 3000 rpm

Overview:
I am working on my buddie's 2000 ford focus zx3 2.0l zetec dohc with a manual transmission. The clutch, fuel pump, fuel filter, o2 sensors, cat converter, spark plugs, spark plug wires, coil pack, pcv valve, pcv elbow, and the pcv tube have been replaced. I did a compression test and I got 190psi,188psi,189psi,190psi so the engine is healthy. I used motorcraft parts because I know these cars are picky.

Symptoms:
The car fires right up. Since I replaced all of these parts it idles smooth. If I am very gentle with the gas it drives fine as long as I do not go above 3000rpm. If I press the gas too hard it begins to shake violently and I get no power. If I go above 3000 rpm it feels like I hit a wall and the rpms bog down and I lose power. I have search all over the forums for help. ANY IDEAS!? Thank you.

Verdict: I had to update the car to the newer style fuel pump assembly. Thanks sleepyboy!


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Old 11-10-2013, 12:43 AM   #2
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Moved to the Technical Chat area



Sounds like the fuel pump going out, classic focus fuel pump symptoms right there.
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Old 11-10-2013, 12:56 AM   #3
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That is what I thought but it has recently been replaced within the last 10k miles because it would not start. Not by me but that is what my buddy is telling me. I changed everything else on the list myself. Do you think it could be failing already? Another thing to add is it is not throwing any codes. Is there a way to test the fuel pump?
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Old 11-10-2013, 01:01 AM   #4
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Did they replace just the pump or the whole assembly?
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Old 11-10-2013, 01:07 AM   #5
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He said he is not sure but that the part was small so I am going to guess and say just the pump.
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Old 11-10-2013, 01:31 AM   #6
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I'd check the fuel pump then, most likely the sock on the fuel pump is full of trash. They redesigned the can that the pump sits in due to if clogging up if I remember right? It's been so long since we've seen this issue on the forum here since most of the cars that were effected were upgraded or fixed.

If you can get someone with a scanner or a programmer to see what your fuel pressure is that will tell you a lot. My car would run and drive but once you put a load on it or got above 3-4k rpm it the fuel pressure would drop off or become erratic.
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Old 11-10-2013, 02:49 AM   #7
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I have a sct xcal so I will check that. I just was thinking that was not the issue because I thought it was changed! Would you stick with a motorcraft assembly or would a Carter's assembly work? There is over a $100 price difference on rockauto.com
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Old 11-10-2013, 03:15 AM   #8
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Up to you on that, I ended up putting a Bosch one in mine cause that was all I could find at the local autoparts store at the time.
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Old 11-10-2013, 10:12 AM   #9
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fuel pump

totally agree start with the pump and replace filter, and sry to say but just because its new doesn't mean that its good. i once replaced the fuel pump on my sisters truck four times before i got a good one and they were all delfi $250 a pump luckily the manager at the parts store was cool and just warranted there for me.

and if the pump is good it could have pulled crap out of the tank clogging the filter happened on my 01
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Old 11-26-2013, 06:45 PM   #10
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was the car ever fixed? having same issue
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