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1977 Ford F-150 Engine does not run except with ignition on

Tiny
2CARPROSGLEN
  • MEMBER
  • 1977 FORD F-150
  • V8
  • 4WD
  • MANUAL
  • 101,030 MILES
The engine will only run with the ignition switch turned to start. Once the engine fires and the ignition key is released to the run position, the engine dies.
Monday, February 22nd, 2010 AT 2:41 AM

4 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Either the ignition circuit from the ignition switch is open or the ignition switch is defective.
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Monday, February 22nd, 2010 AT 2:44 AM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
Hi there,

Also check that the ballast resistor is not burnt out, this can also give these symptoms.

Mark (mhpautos)
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Monday, February 22nd, 2010 AT 2:51 AM
Tiny
2CARPROSGLEN
  • MEMBER
  • 2 POSTS
Thanks for the information. Due to the age of the vehicle I cleaned the terminal ends of the wiring as well as the terminal posts on the coil, the distributor rotor and distributor cap terminals. Used a small file. Engine starts and runs like a charm. Did no have to replace any components.
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Tuesday, February 23rd, 2010 AT 2:15 AM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
OK, good to hear that you are back on the road, thank you for using 2carpros, your feed back is always welcome.

Mark (mhpautos)
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Tuesday, February 23rd, 2010 AT 2:29 AM

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