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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

ignition help needed

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Old May 19, 2015 | 04:38 PM
  #31  
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peka
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it runs

Started right up, put new voltage regulator and battery in. Voltage at coil with engine running is 10.85 How big of resistor will I need to bring it down to 9 volts?
 
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Old May 19, 2015 | 04:59 PM
  #32  
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Originally Posted by peka
Started right up, put new voltage regulator and battery in. Voltage at coil with engine running is 10.85 How big of resistor will I need to bring it down to 9 volts?
Are you measuring the 10.85 volts across the coil or is the negative meter lead on the battery post negative and the positive meter lead on the coil positive.

Also, try another voltage check, KEY ON engine not running, coil positive and battery terminal negative.

Jim
 
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Old May 19, 2015 | 10:32 PM
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This 10.85 was coil + and ground, engine running, with battery - and coil + and engine running it was 10.65. Engine not running, key on and coil + and battery - is 6.55
 
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Old May 20, 2015 | 11:40 AM
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Originally Posted by peka
This 10.85 was coil + and ground, engine running, with battery - and coil + and engine running it was 10.65. Engine not running, key on and coil + and battery - is 6.55

While your voltage readings aren't exactly what I was expecting I would still put it in the safe zone, I would just run it as is.

As an added tip I would mount the DS2 IGN module with a few washer between the plastic inner fender and the IGN module box. This will allow air flow under the box and aid with cooling the IGN module.

Jim
 
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Old May 20, 2015 | 01:20 PM
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Already did that plus added a ground wire from firewall to ignition box.
 
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