Duraspark conversion questions
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Ford Trucks for Ford Truck Enthusiasts
Module used 1974 is 1974 only / Module used 1975 is 1975 only.
1976/79: There are three different modules, two are CA only.
Modules have a colored plastic square above where the wires feed out used to ID them, also have ID numbers marked on them.
The following is "the better" of all Dura/Spark modules:
1U2Z-12A199-AA (replaced D6AZ-12A199-A, D8VY-12A199-A, D9VZ-12A199A) .. Ignition Module-has blue plastic square (Motorcraft DY-893) / Available from Ford.
Applications: Myriad 1976/97 FoMoCo Passenger Cars/Trucks/Bronco's/Econolines.
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D4PZ-12A112-A .. Stator aka Magnetic Pickup Coil-fits inside dizzy (Motorcraft DU-1A) / Availabe from Ford.
Applications: All 1974/79 V8 Passenger Cars/Trucks/Broncos/Econolines except 1979 LTD/Grand Marquis 351W with EEC.
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POS: D7AZ-12A199-A .. Ignition Module-has red plastic square, Used in many 1976/79 CA vehicles only. You do NOT want this terd, was a POS from day one.
1977: There were 10's of 1000's of new/nearly new vehicles parked on dealers service lots because the POS was defective. Couldn't get any replacements, cuz the POS was on D99 back order for three months.
When finally available, the POS was no better than before! STAY AWAY!!
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D9AZ-12A199-B .. Ignition Module, has brown plastic square, some 1979 CA vehicles only.
The three step scenario of a failing Dura/Spark ignition module.
1) Module overheats, engine dies. Module cools down, engine restarts almost at once.
2) Module overheats, engine dies. Module cools down, engine restarts in an hour...or so.
3) Soone or later, usually sooner, the module overheats, BURNS OUT. Now the engine will not restart.
Since modules fail when they overheat, taking it to a autoparts stores to be tested: It usually tests OK (cuz it's cold), unless the little charmer has burned out.
Engine heat is the mortal enemy of these modules (called Never/Spark! by Ford techs). The module is mounted on the left fender inner apron. This is across from the V8's red hot exhaust manifold.
If replacing the little charmer, use some washers to space it further away from the apron, cuz the more airflow...the better.
Nothing wrong with the stock points system for getting it going. I am running stock points in 2 of my trucks pretty much daily and no issues they run fine.







