Have a 150ma draw on 2007 Sport Trac. Pulling 10amp fuse to OBDII drops it to near zero. I have remote start, brake control, passive alarm etc. Should I give up the search and bring to a dealer?

The only way to solve strange issues like this is by finding a local auto electrician with a pro grade scan tool computer. They can record all the functions whilst driving and record exactly what happens when it cuts out.

These technicians are not normal mechanics.

https://www.google.com/search?q=auto+electrician+near+me

..

I had this problem as well on a earlier year PT Cruiser, i tried everything i could think of, removing fuses one by one while watching the current draw on the battery led me to the radio, after pulling the fuse for the radio the current draw dropped down to about 150mA, i don't know what was wrong with the radio but i replaced it and the problem went away. The IOD fuse supplies power to the ECU and all of the electronic control modules in the car, how much current draw are you seeing with the IOD fuse in, and how much are you seeing with it out? Its not uncommon to see a couple hundred mA in standby to everything, especially if you have the factory security system with immobilizer, chipped keys. But you may have to pull one fuse at a time to find the culprit if you are seeing a much higher draw, should be less than 1 amp at the worst.

P0193 - Fuel Rail Pressure Sensor Circuit High Input
The Fuel Rail Pressure (FRP) sensor is a diaphragm strain gauge device in which resistance changes with pressure. The electrical resistance of a strain gauge increases as pressure increases, and the resistance decreases as the pressure decreases. The varying resistance affects the voltage drop across the sensor terminals and provides electrical signal to the Powertrain Control Module (PCM) corresponding to pressure.

Strain gauge type sensors are consider passive sensors. A passive sensor is connected to a voltage divider network so that varying the resistance of the passive sensor causes a variation in total current flow.

Voltage that is dropped across a fixed resistor in series with the sensor resistor determines the voltage signal at the PCM. This voltage signal is equal to the reference voltage minus the voltage drop across the fixed resistor.

The FRP sensor measures the pressure of the fuel near the fuel injectors. This signal is used by the PCM to adjust the fuel injector pulse width and meter fuel to each combustion cylinder.

Symptoms:
- Engine Light ON (or Service Engine Soon Warning Light)
- Engine will not start

Possible causes
- Excessive resistance in the circuit
- Low or no fuel
- Wiring harness connector of the fuel pressure sensor
- Fuel Rail Pressure Sensor
- Fuel Pump


Hope this helps (remember to rate this answer).

The whole brake light assembly should be replaced if there is a water leak, or try puddy epoxy to seal it, or even clear epoxy or glue to seal the lens.

Pulling the fuse will not disable or stop the alarm. If the fuse is blown the car will not start. Ther alarm fuse is the ecm fuse if it's good the check engine light will come on when you turn on the key. The fuse says ECM

This is very likely your idle air control valve. Common problems with ford motors in my experience.

If you still get current drawing when car is turned off, you will have to start pulling electrical connectors and checking for draw. If no change, connect, and go to next connector, repeating until the draw stops, this is the bad component.
I would start with any aftermarket electrical components. Alarm's, radio's, etc. Then I would disconnect and check for draw on any component that get's power when car is off. Horn, light's, brake light switch (usually located towards top of brake pedal), radio, cigarette lighter, etc...Disconnect each component separately and check for current draw.

First thing is to identify the alarm system, I.E.- who made it and what model it is? (like Viper, Automate, etc...)
Contact the aftermarket alarm manufacturer or the person that installed the alarm (if you had/know who installed the alarm system). Most major system have a phone number and a list of qualified installers for their systems. They will be able to direct you to a shop that can service the system. If your vehicle won't start, you may have to have it towed to the location to diagnose and correct the problem.

Torque Specifications Description Nm lb-ft lb-in Brake caliper bolt 32 24 — Brake disc shield bolt 8 — 71 Fuel tank filler pipe bracket bolt 15 11 — Fuel tank filler pipe hose clamps 3 — 27 Halfshaft nut and washer 275 203 — Lower arm inboard bolt 250 185 — Lower arm outboard bolt 275 203 — Parking brake cable bracket bolt 10 — 89 Shock absorber lower bolt 275 203 — Shock absorber rod nut 65 48 — Shock absorber upper mount nut 30 22 — Stabilizer bar bracket nut 48 35 — Stabilizer bar link nut and grommet 30 22 — Toe link cam adjuster nut 275 203 — Toe link outboard bolt 325 240 — Trailing arm bolt 300 222 — Upper arm outboard bolt 225 166 — Upper arm inboard nut 250 185 — Wheel speed sensor bolt 8 — 71 Wheel knuckle bolt 275 203 —

180 milli-amps is way to much draw,ford's limit is 50 milli-amps but typically we usually only see around 20-30. Now when you say fuse 2 is that in the under-hood fuse panel or the interior fuse panel? And if this vehicle is a 2007 it may still be under factory warranty which was 36 months or 36000 miles providing that the add on automatic starter is not causing your draw.Which in that case the people who installed it should be responsible for that.