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The fuel pressure regulator on a 1990 Geo Prizm is located in the fuel line that runs along the valve cover of the engine. It is an inline device that is no bigger than the fuel line itself.
fuel pressure regulator is on the right end of the rail.
Voltage regulator is located inside of the alternator.
where is voltage regulator on 1990 lincoln town car
It is located in the alternator.
It is in the throttle body.
Worn brushes, bad Regulator, or Likely a bad connection or wiring.
The fuel regulator is found need the fuel pump in a 1990 Maxima. It is right near the fuel filter on the driver's side.
Inside the alternator.
It should be on the firewall centrally located.
Attached to the end of the fuel rail (pie that connects to the injectors) there should be a round metal thing with a vacuum hose attached to it. This round thing is your fuel pressure regulator. Do not disconnect the vacuum hose with the engine running if you suspect a bad regulator, as fuel may spurt of if the diaphragm leaks and this could be a fire hazard.
On the fuel rail. The tank return line connects to it.