How does a fuel pressure regulator work on a Toyota?
As soon as the key moves to the run position there is no longer a power supply to the injector. The fuel pressure regulator is a spring loaded valve that allows fuel to return to the tank once the set pressure is reached.
How does the cold start injector work on a Toyota?
The cold start injector most certainly works at temperatures above 32deg. The cold start injector time switch provides a ground circuit for the injector that allows the injector to spray fuel during cranking to help start the engine. The time it allows the fuel to spray is based on what the temperature is.
Why does my Toyota Prius keep hard starting?
Well, after doing a lot of thinking i finally figured out my OUT OF THE BLUE HARD STARTING. It was my Fuel Pressure Regulator. At first i thought it was my ignition coil because the hard starting was intermittent and i ran a test on it and the Primary Resistance was way off spec, but the Secondary Resistance was spot on.
What happens when the fuel regulator is stuck?
If the regulator is stuck open, it just pours fuel down the return line, right back into the tank, with no or low fuel pressure. ..and maximum pressure when it’s closed — no vacuum to diaphragm; what you should get when starting. Thank you for posting your fix.
Where is the fuel pump in a Toyota?
Rather, Toyota says, “For all involved vehicles, Toyota and Lexus dealers will replace the involved fuel pump with an improved one…” That sounds simple, but the fuel pump in your Toyota or Lexus lives inside your gas tank. To get at it, the mechanic may be in for a half-day’s work.
What should I expect from the Toyota fuel pump recall?
Here’s what to expect if you own a Lexus LS 500, LC 500, RC 350, RC 300, GS 350, IS 300, ES 350, LX 570, GX 460, RX 350, NX 300, RX 350L or a Toyota 4Runner, Camry, Highlander, Land Cruiser, Sequoia, Sienna, Tacoma, and Tundra, Avalon, or Corolla. Toyota follows the topics at Torque News and one recently caught their eye.
Can a bad fuel pressure regulator cause flooding?
Unless it is leaking. then it can cause flooding. But usually if that is the case, setting overnight it would usually start OK, because the fuel would have mostly evaporated and dissipated by then. You may also have a weak fuel pump so then a bad fuel pressure regulator would be that much worse. IF everything is OK now then let it be.
What are the symptoms of a fuel pump relay problem?
1. Engine stalls One of the first symptoms of an issue with the fuel pump relay is an engine that suddenly stalls. If the fuel pump relay has an issue while the vehicle is operating it will cut off power to the fuel pump, which will cause the engine to stall.