How much current does the VH draw?

[CrazyTrance]

I'm curious as to how many Amps are drawn from the alternator from the engine alone. JUST the engine.

Anybody know?

[AZhitman]

Hmmmm.

You mean the injectors, sensors, ECU, gauges, etc?

The "engine" draws none. The electrical components do, however. Add them up (or ask Dennis, he probably knows).

[CrazyTrance]

Hmmmm.

You mean the injectors, sensors, ECU, gauges, etc?

The "engine" draws none. The electrical components do, however. Add them up (or ask Dennis, he probably knows).

Yes thats what i meant, the components the engine needs to run.

[AZhitman]

Even in that case, you'll have to quantify that to decide which ones are actually "necessary".

Some are intermittent, for example. Some are variable in their draw.

[Q45tech]

Average vs Peak is a function of rpm just as the fuel pump varies significantly at idle/cruise vs WOT depending on rpm.

Injector duty cycle varies from 6% to 55%

Peak might be close to 30 amperes [including fuel pump/FPCU, ecu, tcu, injectors, coils, IAC O2 heaters, MAF, VVT solenoids

Remember alternator CAPACITY varies with rpm also it is almost never 110 amperes usually 40-50.

Careful the alternator pulley ratio is 2.5 [not 3] because the engine can spin 7300 rpm vs domestic V8...............for an altenator to survive 18,000 rpm is very special.

At idle the Q alternator probably has less amperes [1875 rpm vs 2250 rpm] than domestics due to pulley ratio.

[CrazyTrance]

Dangit. I knew you all were gonna ask these questions.

I guess what i need to know is at idle, how many amperes would it draw.

Fuel pump, Injectors, coil packs, cas, etc.

Not really extremely important. Something i'm just curious about.

[Q45tech]

For not really important waste of time consulting I charge $200 per hour how many hours do you want to pay for in advance?

Is that a warmed up idle or a just cranked idle........the diference is significant just as the rpms are different.

[T45]

Lol.

You could check yourself if you have the time, desire and an ammeter. I would assume that the biggest consumer of current at idle would be the fuel pump. Then coils. Then injectors. Then the rest of the sensors. Just a guess. I would also estimate that the total current draw would be about 8-10 amps?

[Q45tech]

The fuel pump and fpcu varies depending on viscosity and temperature of gasoline and condition of fuel filter.

An ammeter will show average not true RMS current [the heating which blows a fuse]..................you need an oscilloscope and shunt to view the waveform of current to decide.

10 amperes is low as you will see.