Ignition and engine management system Ford Scorpio 1

Ignition and engine management systems — general information
The ignition system is designed to ignite the working mixture in the engine cylinders by a spark discharge, which must be created at a strictly defined moment. The ESC...

Technical characteristics of the ignition system
Ignition sequence OHC and DOHC engines 1–3–4–2 V6 Engine 1–4–2–5–3–6 Ignition system type Engines with carburetor ESC II Engines with fuel injection system ESC IV...

Ignition system ESC II — design description
Block diagram of the ESC II control system The ESC II carburetor and ignition fuel mixture control system includes an electronic control unit, an ignition coil, an...

Ignition system EEC IV — design description
Block diagram of the EEC IV control system The EEC IV ignition system is similar in functionality to the ESC II system and is installed on engines with a fuel injection...

Ignition distributor
OHC Engine Ignition Distributor 1 – cover, 2 – distributor rotor, 3 – ignition distributor, 4 – sealing ring, 5 – connector DOHC Engine Ignition Distributor 1 –...

Checking the ignition timing angle
All engines except DOHC OHC Engine Timing Scales V6 Engine Timing Scale and Marker 1 – ignition timing scale, 2 – pulley with mark The ignition timing is set very...

Ignition unit (models with fuel injection system)
OHC and V6 engines 1. Remove the negative cable from the battery. 2. Disconnect the multi-pin connector from the ignition distributor. 3. On V6 models, make alignment...

Ignition coil
Ignition coil 1 – ignition coil, 2 – mounting screw, 3 – high-voltage wire The ignition coil is mounted on the left front side of the engine compartment and is secured...

Fuel trap on engines with carburetor
On carbureted engines, the fuel trap is installed in the vacuum pipe between the intake manifold and the ESC II unit. 1. Remove the negative cable from the battery. 2....

Engine control unit
Please note: Since January 1987, a new, smaller ESC II hybrid unit has been installed on the 1.8 dm³ engine. Engine control unit installed since January 1987 on the 1.8...

Carburetor stepper motor
Warning! Uneven and unstable idle speed does not always indicate a stepper motor failure. It is necessary to check the reliability of the contact between the plunger and...

Device for heating the intake manifold of engines with a carburetor
Caution! Do not remove the intake manifold heater when it is hot. 1. Remove the negative cable from the battery. 2. To improve access, remove the air filter housing. 3....

Engine Management System Relay
Engine Management System Relay 1 – power relay, 2 – Intake manifold heater relay All relays are located behind the instrument panel. Access to the relays is possible...

Setting the ignition timing and idle speed
Octane Rating Step Connector The connector is indicated by an arrow. Location of ignition delay adjustment elements 1 – grounding point (ignition coil mounting screw), 2...

Crankshaft speed and position sensor
Crankshaft speed and position sensor (bottom view) The sensor is located on the right rear side of the cylinder block, behind the oil filter. 1. Remove the negative...

Air temperature sensor
Air and fuel temperature sensor 1 – air temperature sensor, 2 – fuel temperature sensor The air temperature sensor is located in the upper section of the intake manifold...

Fuel temperature sensor
Air and fuel temperature sensor 1 – air temperature sensor, 2 – fuel temperature sensor On a DOHC engine, the fuel temperature sensor is located at the top of the fuel...

Vehicle speed sensor
The sensor is located on the left side of the gearbox. 1. Remove the negative cable from the battery. 2. Access is best from underneath the vehicle. Raise the front of...

Manifold Absolute Pressure (MAP) Sensor
Manifold Absolute Pressure (MAP) Sensor for Catalytic Converter-Equipped Vehicles The sensor is located on the right front side of the engine compartment. On V6 engines,...