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Fuel System return type with PWM pump

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23 May 2021 15:09 #49116 by Mahdy
I've met many cars , like Toyota landcruiser with a fuel system return type and has a vacuum assist regulator,  but it had also PWM pump and fuel rail pressure sensor ! 

Can any one tell me , how the pressure is being regulated ? 

Is it by the mechanical rail regulatregulator controlling the pump speed ! 

 

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23 May 2021 19:00 #49118 by Tyler
Replied by Tyler on topic Fuel System return type with PWM pump
Is there a specific year of Land Cruiser you're thinking of? Which engine code, specifically? That'd help me in researching the answer.

 

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