Pickup coil interchange
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Tuned
Joined: Mar 2017
Posts: 351
Likes: 57
Pickup coil interchange
I’ve got my distributor pulled out now. The plug going into distributor/pickup coil disintegrated in my hand. The middle prong had been melting the plastic very slowly.
I ordered a motorcraft cap and rotor and a standard ignition pickup coil from oreillys and reading another thread here someone mentioned not buying the exact pickup coil I just bought and buying one from Napa. I trust Napa a little more so I’d figured I’d follow their advice.
Long story short Napa lists 4 pick up coils for a 1979 f250 3/4 ton. I can’t find any kind of drop down menu to select a specific engine. I have a 400
They list 2 Napa Echlin brand coils with 36 month warranty’s and 2 Proform coils with 12 month warranty’s.
Napa number ECH MP700 and ECH MP712
Proform numbers MPE MP700sb and MPE MP712sb
In each of the different models then sell a 1974-1989 version and a 1975-1983 version. All are listed as “High Altitude”.
Which one should I get? Is there any real discrepancy between 1974-1989 and 1975-1983? There is a price difference with the Napa 36 month 75-83 model being the most expensive by $10 or so. I’m leaning toward buying that one. I’m open to other stores or anywhere else. I couldn’t find a real Motorcraft pickup coil anywhere.
I ordered a motorcraft cap and rotor and a standard ignition pickup coil from oreillys and reading another thread here someone mentioned not buying the exact pickup coil I just bought and buying one from Napa. I trust Napa a little more so I’d figured I’d follow their advice.
Long story short Napa lists 4 pick up coils for a 1979 f250 3/4 ton. I can’t find any kind of drop down menu to select a specific engine. I have a 400
They list 2 Napa Echlin brand coils with 36 month warranty’s and 2 Proform coils with 12 month warranty’s.
Napa number ECH MP700 and ECH MP712
Proform numbers MPE MP700sb and MPE MP712sb
In each of the different models then sell a 1974-1989 version and a 1975-1983 version. All are listed as “High Altitude”.
Which one should I get? Is there any real discrepancy between 1974-1989 and 1975-1983? There is a price difference with the Napa 36 month 75-83 model being the most expensive by $10 or so. I’m leaning toward buying that one. I’m open to other stores or anywhere else. I couldn’t find a real Motorcraft pickup coil anywhere.
Laughing Gas
Joined: Nov 2013
Posts: 1,207
Likes: 60
From: S.E. Louisiana;so far USA
Make some resistance checks.
Between orange and purple wires should be 400-800 ohms (preferably 600-650 ohms).
Between the black wire and ground should be zero ohms.
Between orange wire and ground (& purple wire and ground) should be at least 70,000 ohms (preferably infinity ohms).
The plastic surrounding the stator's coil should not be cracked.
If you have a choice on country of origin, USA is to be preferred over China.
Between orange and purple wires should be 400-800 ohms (preferably 600-650 ohms).
Between the black wire and ground should be zero ohms.
Between orange wire and ground (& purple wire and ground) should be at least 70,000 ohms (preferably infinity ohms).
The plastic surrounding the stator's coil should not be cracked.
If you have a choice on country of origin, USA is to be preferred over China.
Lead Driver
Joined: Oct 2018
Posts: 7,892
Likes: 2,370
I bought 2 bad Standard brand ones in a row. they're crap.
If you look on ebay you can still find NOS ones, Prestolite and a few other older made in the US ones. if you have to use a chinese one to get it going now watch for a quality one to replace it. Jeep ones starting in '78 are the same and seem to come up for sale more often.
If you look on ebay you can still find NOS ones, Prestolite and a few other older made in the US ones. if you have to use a chinese one to get it going now watch for a quality one to replace it. Jeep ones starting in '78 are the same and seem to come up for sale more often.
More Turbo
Joined: Nov 2003
Posts: 747
Likes: 26
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Lead Driver
Joined: Oct 2018
Posts: 7,892
Likes: 2,370
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