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#1083525 10/21/04 01:15 AM
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ok i got a 99 se sport wit 96,578 miles on it. i just changed the fuel pump complete unit 259$ from ford.. now that got rid of the high rpm hikup that it had under 1/2 tank but now at low rpms when i am just puttin around town, it wants to hesitate a lil bit. now i do got a gas mileage problem now as well 170 mile to a TANK.. i only run 93 or higher in it. before it waz gettin a little over 200 to a HALF tank.. i need help can not aford this gas n e more. what ould the problem be ? thank you


G/f's black 99se sport 5 speed 2 1/2 test pipe-custom cat back 3 single tip cai with kn3530 safc optimized tb 8mm plug wires spec stage 1 clutch svt front bumper
#1083526 10/21/04 02:13 AM
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Did you check if the baffles where broken in the tanks? , that can cause problems too. Did you change your gas filter? When you said that you use 93 or highter, do u mean octane level? Cuz you don't need to use as high. The fuel system isn't design to use that.

Nic.


Contour 99 MTX V6 fully loaded, stock with 110000km. Illuminated sunroof switch. About to do the mystique rear dome light conversion with eyeball dome light.
#1083527 10/21/04 11:10 AM
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Did you change it, or did ford? If you changed it, look at the old pump and see if it has a sock hanging off one side of the bottom. If not, look at the bottom of the pump and see if there is a circular screen covering the inlet. If there is a space for one, and the screen is not in it, you know where is probably fell off at.... Check it for fuel leaks, fuel pressure, maf performace, baffles in the tank, etc. It's probably pretty obvious what's wrong....

#1083528 10/22/04 08:50 PM
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what the hell are baffels?? We changed the pump not ford. The old pump had the round screen in the bottom but the new pump has the sock like filter on the bottom.

#1083529 10/28/04 01:28 AM
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I have the same problem. 00 SVT, changed fuel pump ($259), now I have unsteady acceleration at lower rpm (<2500)predominately in 3rd gear. Haven't noticed a gas mileage problem though. would love to find the answer for this

#1083530 10/31/04 06:22 PM
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just changed fuel filter and still no help on that either..
could this be a fuel pressure regulator?


G/f's black 99se sport 5 speed 2 1/2 test pipe-custom cat back 3 single tip cai with kn3530 safc optimized tb 8mm plug wires spec stage 1 clutch svt front bumper
#1083531 10/31/04 07:11 PM
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Well... you should check for vacuum leaks first.

Have you reset the computer yet?

Maybe something got clogged into the injectors?
Berrymans B-12 might help.





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