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1990 Mazda 626 Fuel pump is not getting power on its own

Tiny
DIANE A
  • MEMBER
  • 1990 MAZDA 626
  • 4 CYL
  • FWD
  • MANUAL
  • 125,000 MILES
Recently, my car started to have problems with jolting and bucking when I gave it gas. Now it will not run at all. My husband straight wired the fuel pump and it runs perfectly. Called the dealer and they say there is no relay that could be out. If anyone can help with this confounding problem, it would be much appreciated. We could keep the fuel pump straight wired and install a toggle switch, but we'd rather fix it properly. If we could only figure out the problem. Thanks in advance!
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Thursday, March 18th, 2010 AT 12:33 PM

2 Replies

Tiny
LEGITIMATE007
  • MECHANIC
  • 5,121 POSTS
They are right, there is no "fuel pump relay" but there is a fuel pump control unit. The problem should be in there.
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Thursday, March 18th, 2010 AT 12:54 PM
Tiny
LEGITIMATE007
  • MECHANIC
  • 5,121 POSTS


https://www.2carpros.com/forum/automotive_pictures/88091_fuel_pump_control_unit_1.jpg

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Thursday, March 18th, 2010 AT 12:56 PM

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