ON SOME CHEVY VEHICLES THE OIL PRESSURE SWITCH HAS A DOUBLE RELAY BUILT INTO IT THAT IF IT IS BAD WILL ALSO FEED THE FUEL PUMP EVEN WITH THE IGNITION OFF
As well if the inertia switch was tripped that will also stop power to the fuel pump.
Would this cause the HVAC #21 fuse in the inside of truck to keep blowing?
Starts and stops the fuel pump depending on fuel pressure.
Starts and stops the fuel pump at the correct time.
The fuel pump relay, is controlled by the EEC module, which provides power to fuel pump under various operating conditions. When ignition is in "OFF" position, EEC power and fuel pump relay contacts are open. After engine starts, power to fuel pump is supplied through fuel pump relay. EEC module senses engine speed and shuts off fuel pump relay when engine stops.
Starts and stops the fuel pump.
Blown fuel pump fuse, defective fuel pump relay, bad fuel pump, or clogged fuel filter.
yes,because engine will stop if engine will stop ,power steering pump will stop. Yes, the power steering pump is powered by the rotation of the motor which is powered by fuel. If the motor stops the pump stops and steering becomes very labored especially at lower speeds.
No. When a fuse blows it stops power from getting to the attached devices. It would power off and stay off. IF the fuel pump was attached to a self-resetting circuit breaker, then the power might cycle on and off.
The car stops running.
what is the cause of no power at the fuel pump
that can be because of the fuel pump relay,a severed wire to the fuel pump or the fuel pump fuse is blown.
probably when the pump stops working! WOW
When the old one becomes noisy, weak, or stops pumping fuel altogether. Assuming the fuel filter is not clogged, the fuel pump fuse is not blown, and the fuel pump relay is good.