The Ford EDIS or Electronic Distributorless Ignition System is a computer-controlled ignition system developed by
Ford that uses an
ignition coil for each pair of cylinders (
wasted spark). All the coils are placed in a single module called a coilpack.
Mazda 323
Vehicles with EDIS
Ford used the EDIS module on a number of vehicles from 1988 to 199X.
EDIS-4
The EDIS-4 module is used on the following vehicles equipped with the
Ford HCS engine
The Ford Kent is an internal combustion engine from Ford of Europe. Originally developed in 1959 for the Ford Anglia, it is an in-line four-cylinder pushrod engine with a cast-iron cylinder head and block.
The Kent family can be divided into th ...
, and the 1.9-liter
straight-4
A straight-four engine (also called an inline-four) is a four-cylinder piston engine where cylinders are arranged in a line along a common crankshaft.
The vast majority of automotive four-cylinder engines use a straight-four layout (with the ...
Ford CVH engine, between 1988 and 1993:
*
Ford Escort /
Mercury Tracer
The Mercury Tracer is an automobile manurfactured and marketed by Ford's Mercury division for model years 1987-1999, over three generations in three- and five-door hatchback, four-door sedan, and five-door station wagon configurations.
The first ...
*
Ford Fiesta
The Ford Fiesta is a supermini car marketed by Ford since 1976 over seven generations. Over the years, the Fiesta has mainly been developed and manufactured by Ford's European operations, and has been positioned below the Escort (later the ...
(Europe)
*
Ford Escort (Europe)
*
Ford Sierra (Europe)
*
Ford Scorpio
The Ford Scorpio is an executive car that was produced by Ford Europe from 1985 to 1998. It was the replacement for the European Ford Granada line (although in the UK and Ireland the Scorpio was marketed under the Granada name until 1994). Li ...
(Europe)
*
Ford Mondeo (Europe)
This system was also used on the 1995–2001 4-cylinder Ford Rangers and 1995–2001 Mazda B2300, B2500. But was incorporated into the EEC-V ECU, so there is no external module.
EDIS-6
The EDIS-6 module is used on the following vehicles equipped with the 4.0L
Ford Cologne V6 engine and 3.8L
Ford Essex V6 engine between 1990 and 1997:
*
Ford Ranger /
Mazda B-Series
*
Ford Explorer /
Mazda Navajo
*
Ford Aerostar
*
Ford Mustang
The Ford Mustang is a series of American automobiles manufactured by Ford. In continuous production since 1964, the Mustang is currently the longest-produced Ford car nameplate. Currently in its sixth generation, it is the fifth-best selli ...
(3.8L V6)
*
Ford Thunderbird Supercoupe
*
Ford Taurus SHO V6 (1989–1995)
*
Ford Windstar
The European
Ford Scorpio 2.9 V6 24V Cosworth also uses the EDIS-6 module.
EDIS-8
The EDIS-8 module is used on the following vehicles equipped with the 4.6-liter
V-8 Ford Modular engine between 1990 and 1997:
*
Lincoln Town Car, Mark VIII
*
Ford Crown Victoria /
Mercury Grand Marquis
*
Ford Thunderbird /
Mercury Cougar
*
Ford Mustang
The Ford Mustang is a series of American automobiles manufactured by Ford. In continuous production since 1964, the Mustang is currently the longest-produced Ford car nameplate. Currently in its sixth generation, it is the fifth-best selli ...
The EDIS-8 Module was also used in Some later 5.0L Ford Explorers until around 2002
Aftermarket use in non-Ford vehicles
The EDIS system's relative simplicity, in particular the fact it does not require a cam sensor, makes it a popular choice for custom car builders and classic car owners looking to retrofit a modern ignition system to their vehicle. The crankshaft-mounted trigger wheel, VR sensor, EDIS Module and an ignition control computer can all be easily fitted to most older engines that originally used a traditional distributor for ignition.
See also
*
Profile ignition pickup
A crank sensor (CKP) is an electronic device used in an internal combustion engine, both petrol and diesel, to monitor the position or rotational speed of the crankshaft. This information is used by engine management systems to control the fuel ...
References
US Patent Number 4,661,778: Ignition diagnostic monitor* [http://patft.uspto.gov/netacgi/nph-Parser?u=%2Fnetahtml%2Fsrchnum.htm&Sect1=PTO1&Sect2=HITOFF&p=1&r=1&l=50&f=G&d=PALL&s1=5014676.PN.&OS=PN/5014676&RS=PN/5014676 US Patent Number 5,014,676: Ignition system with repetitive sparks]
Ford EDIS technical information* US Patent Number 6,115,665: Memory Efficient Computer System And Method For Controlling An Automotive Ignition System
E-Type UK EDIS/Megajolt Ignition Support Thread
Ford Motor Company
Automotive technology tradenames