why is it dying?
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Joined: Nov 2008
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why is it dying?
I have a 1977 ford f-350 with the 400-2bbl. It dies for no reason --sometimes while going down the road and sometimes while just setting still idling. I have put a test light on the power side of the coil and when it dies the light is still lit, so I still have power to the coil. It will re-start perfectly if you turn off the key and re-start it. It will not start if you hold the key in the start position--only after you release the key to the run position. Is it the pick up coil or the module? How do you test a pick up coil? I have replaced the ingintion switch. Everything is stock--with 32,000 original miles. When it dies it drops like you cut the key off and never makes an attempt to restart with the exception for the occassional muffler splitting backfire and it does it only once but thats all it takes to split a factory muffler. ANY help is appreicated. Thanks in advance.
New User
Joined: Sep 2004
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Sounds like your ignition control box, should be a gray box on the drivers side wheel well under the hood. It is metal and should say motor craft on it if it is original. It has two large round circular plugs coming out from it. Make sure and take the box with you to the auto parts store because they are specific to the engine, should be the color of the plastic under the wires if I remember correctly. Mine would do the same things, really enjoyed the large backfires. <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com
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Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 787
From: Simi Valley, CA
1976/79 Ignition Module
1976/79 F100/350
There are two different ignition modules, but the engine size makes no difference.
What does make a difference is if the truck has a hi-altitude carburetor, or was sold new in CA.
Where the wires feed out from the module is a colored plastic square.
CA or Hi-Altitude Carb RED plastic square.
D9AZ12A199C .. Ignition Module (Motorcraft DY237) ~ D9AZ-12A199-C replaced: D7AZ-12A199-A / OBSOLETE
Obsolete parts vendor Green Sales Co. in Cincinnati OH has 28 = 800-543-4959
---------------------------------------------------------------------------
49 State, or no Hi-Altitude Carb: BLUE plastic square.
1U2Z12A199AA .. Ignition Module (Motorcraft DY893) ~ 1U2Z-12A199-AA replaced: D9VZ-12A199-A
MSRP: $113.62 / FTEpartsguy.com price: $61.36
-----------------------------------------------
Inside the dizzy is the stator, better known as the pickup coil.
This part, when it fails, gives off the same symptoms as a bad module.
Usually Ford mechanics replaced both at the same time.
This pickup coil fits all 1974/79's, regardless of the carb, CA or not.
D4PZ12A112A .. Stator aka Pickup Coil (Motorcraft DU1A)
MSRP: $97.96 / FTEpartsguy.com price: $52.90
There are two different ignition modules, but the engine size makes no difference.
What does make a difference is if the truck has a hi-altitude carburetor, or was sold new in CA.
Where the wires feed out from the module is a colored plastic square.
CA or Hi-Altitude Carb RED plastic square.
D9AZ12A199C .. Ignition Module (Motorcraft DY237) ~ D9AZ-12A199-C replaced: D7AZ-12A199-A / OBSOLETE
Obsolete parts vendor Green Sales Co. in Cincinnati OH has 28 = 800-543-4959
---------------------------------------------------------------------------
49 State, or no Hi-Altitude Carb: BLUE plastic square.
1U2Z12A199AA .. Ignition Module (Motorcraft DY893) ~ 1U2Z-12A199-AA replaced: D9VZ-12A199-A
MSRP: $113.62 / FTEpartsguy.com price: $61.36
-----------------------------------------------
Inside the dizzy is the stator, better known as the pickup coil.
This part, when it fails, gives off the same symptoms as a bad module.
Usually Ford mechanics replaced both at the same time.
This pickup coil fits all 1974/79's, regardless of the carb, CA or not.
D4PZ12A112A .. Stator aka Pickup Coil (Motorcraft DU1A)
MSRP: $97.96 / FTEpartsguy.com price: $52.90
MSEE
Joined: Apr 2004
Posts: 10,386
Likes: 35
From: Austin, TX
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