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{{ImportedFrom|site=Xenonzcar|title=Fuel Pressure Regulator and Fuel Temperature Sensor|url= | {{ImportedFrom|site=Xenonzcar|title=Fuel Pressure Regulator and Fuel Temperature Sensor|url=https://z31library.com/xenonzcar_archive/z31/SENSORS/fpr.php.html|archive=https://z31library.com/xenonzcar_archive/z31/SENSORS/fpr.php.html|fetched=2026-05-15}} | ||
== Fuel Pressure Regulator and Fuel Temperature Sensor == | == Fuel Pressure Regulator and Fuel Temperature Sensor == | ||
https://z31library.com/xenonzcar_archive/z31/SENSORS/fuel_temp_sensor.jpg | |||
Z31 300ZX Fuel Pressure Regulator & Fuel Temperature Sensor | |||
The '''Fuel Pressure Regulator''' and '''Fuel Temperature Sensor''' are integrated as a single unit on the Z31 300ZX. These components help the ECU control both fuel flow and fuel pressure. | The '''Fuel Pressure Regulator''' and '''Fuel Temperature Sensor''' are integrated as a single unit on the Z31 300ZX. These components help the ECU control both fuel flow and fuel pressure. | ||
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The fuel temperature sensor is built into the regulator and monitors the temperature of the fuel. When the fuel temperature rises above the specified level, the ECCS control unit increases fuel injection to help cool the fuel in the rails and prevent vapor lock. Early Z31 models also featured a fuel injector cooling fan for this purpose. | The fuel temperature sensor is built into the regulator and monitors the temperature of the fuel. When the fuel temperature rises above the specified level, the ECCS control unit increases fuel injection to help cool the fuel in the rails and prevent vapor lock. Early Z31 models also featured a fuel injector cooling fan for this purpose. | ||
''WARNING | ''' | ||
*WARNING* - Do this modification at your own risk. We Are not responsable for any issues of your own doing. | |||
''' | |||
=== Common Problems === | === Common Problems === | ||
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=== Diagnosis === | === Diagnosis === | ||
https://z31library.com/xenonzcar_archive/z31/SENSORS/fpr/test.jpg | |||
Fuel Pressure Regulator Testing Diagram | |||
=== Sources Used === | |||
* [[Z31/z31fsm php|1984-1988 Nissan 300ZX Factory Service Manual]] | |||
[[Category:Imported from Xenonzcar]] | [[Category:Imported from Xenonzcar]] | ||
Latest revision as of 22:53, 20 October 2026
Imported page. This page was converted from an archived copy of "Fuel Pressure Regulator and Fuel Temperature Sensor" (Xenonzcar, fetched 2026-05-15). The conversion was mechanical, so tables, links and formatting may contain conversion artefacts. Compare against the archived copy if something looks wrong. The content belongs to its original authors.
Fuel Pressure Regulator and Fuel Temperature Sensor[edit]
Z31 300ZX Fuel Pressure Regulator & Fuel Temperature Sensor
The Fuel Pressure Regulator and Fuel Temperature Sensor are integrated as a single unit on the Z31 300ZX. These components help the ECU control both fuel flow and fuel pressure.
The fuel pressure regulator uses a diaphragm to adjust fuel pressure based on vacuum applied to one side, restricting the fuel return line as needed.
The fuel temperature sensor is built into the regulator and monitors the temperature of the fuel. When the fuel temperature rises above the specified level, the ECCS control unit increases fuel injection to help cool the fuel in the rails and prevent vapor lock. Early Z31 models also featured a fuel injector cooling fan for this purpose.
- WARNING* - Do this modification at your own risk. We Are not responsable for any issues of your own doing.
Common Problems[edit]
- Code 41 Will be shown on ECU Diagnostics
Diagnosis[edit]
Fuel Pressure Regulator Testing Diagram