Delphi Fuel Injection Pressure Regulator P/N:FP10389
Delphi FP10526 fuel injection pressure regulator for the 1990-1991 Ford Ranger V6 2.9L or 4.0L and other vehicles controls the fuel pressure delivered to the injectors.
Hard starting, a rough idle or a fuel smell can be signs of a worn regulator, but a weak fuel pump or a leaking injector can look similar, so find the cause before replacing it. Start with a look around the regulator, engine off and cool, for wet fuel or seepage. A pressure test is a job for a shop.
This regulator also fits the 1991 Mazda Navajo V6 4.0L and the 1990 Ford Bronco II V6 2.9L. The 1990-1991 Ford Ranger V6 2.9L or 4.0L takes one regulator, and this listing is a single unit.
Interchange: 90TF 9C968-AA · F0TZ-9C968A · ZZL0-13-280 · 800-156
5G1154 · 21862 · PR44 · PR203
This part cross-references / interchanges with the following part numbers:
Does the Delphi FP10526 fit a 1991 Mazda Navajo V6 4.0L?
Yes. Delphi FP10526 fits the 1991 Mazda Navajo V6 4.0L, and it also fits the 1990 Ford Bronco II V6 2.9L.
Is the Delphi fuel injection pressure regulator suitable for high-ethanol fuel?
Yes. The Nitrile™ diaphragms in Delphi FP10526 are resilient against high-ethanol fuels, and the diaphragm materials are made for a wide range of fuels.
How does this regulator hold fuel pressure steady?
Precisely manufactured internal valves, diaphragms and springs keep fuel pressure consistent and predictable throughout the system's range of control, under all engine operating conditions.
What signs can a failing fuel pressure regulator show?
Hard starting, a rough idle or a fuel odor can be signs. A shop can pressure-test the fuel system to tell whether the regulator is the cause.
Does the Delphi FP10526 replace F0TZ-9C968A?
Yes. F0TZ-9C968A is a listed interchange number for Delphi FP10526, along with 90TF 9C968-AA, 800-156 and the other numbers on the Interchange line.
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