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

Engine stops when key is released

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Old Oct 1, 2005 | 04:49 PM
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WingingEd's Avatar
WingingEd
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Engine stops when key is released

I know there's got to be a "gearhead" on this forum that can help me with this!

1986 f250 4x4.

Had an ignition problem and I found it to me the ECM, replaced it and now there's something else going on.....

The truck will start, but dies as soon as the key is released.

I remember on the old Chrysler products this was caused by the "resistor" box on the firewall. I didn't find one on this truck.

Can somebody point me in the right direction?
 
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Old Oct 1, 2005 | 05:51 PM
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DT 466Man's Avatar
DT 466Man
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From: Adams TN
So it's a gas engine right??

Sounds like it isn't getting power to the ignition module when the key is in the on position, it gets it from a different wire when it is in the start position.

might be a faulty ign switch.

what did the ECM come out of???

DT
 
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Old Oct 1, 2005 | 07:58 PM
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WingingEd
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Smile Found it!

Thanks folks, I found the problem.

It was a bad connector at the Control Unit. I bypassed the two-wire connector and it is fine now.

Thanks again,

Ed
 
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Old Oct 2, 2005 | 06:52 AM
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Originally Posted by WingingEd
I know there's got to be a "gearhead" on this forum that can help me with this!

1986 f250 4x4.

Had an ignition problem and I found it to me the ECM, replaced it and now there's something else going on.....

The truck will start, but dies as soon as the key is released.

I remember on the old Chrysler products this was caused by the "resistor" box on the firewall. I didn't find one on this truck.

Can somebody point me in the right direction?
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