79 351M engine starting problem

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Sep 15, 2004 | 09:57 PM

Jerry79

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From: Shirley, AR

79 351M engine starting problem

I have a problem starting my 79 F150. The starter cranks, and it won't start until I release the key. It doesn't do it all the time, but irritates me once in a while to get me excited. Where do I look to correct the problem?

Jerry

Sep 15, 2004 | 10:13 PM

Torque1st

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Wiring, keyswitch, or starter solenoid. Check the Read First: FAQ thread at the top of the forum for a link to schematics for the system.

Sep 15, 2004 | 10:33 PM

Jerry79

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From: Shirley, AR

79 351M engine starting problem

Thanks for the help. I'll check it out tomorrow and let you know what I find.
Jerry

Sep 16, 2004 | 12:51 AM

jimmieg2

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From: southwest Missouri

jerry I am having the same problem with my truck, 79 F150 4x4, after changing out everything but the brain box i found out it was the brain box. it was melted together inside you might try that also.

Sep 16, 2004 | 03:59 AM

Torque1st

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The ignition module can be tested for free at most auto parts stores.

Sep 16, 2004 | 08:31 AM

dfisher1

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From: Gainesville, FL

All,
I've had this exact problem with mutiple trucks with mutiple drive trains. Its the "Brain Box", as you lay call it. The vehicle will crank and crank, and as soon as you release it to the "ignition on" position it starts.
Brain Box
Definetly Brain Box
Oh Yeah,... Brain Box