i have a 05/f550 that will not crank with key

Asked by Jun 20, 2017 at 11:55 AM about the 2006 Ford F-550 Super Duty

Question type: General

checked fuses ok  replaced  the neutral safety switch . still no crank  .help please

3 Answers

25

Is your security system activated? If you place your key in the ignition and turn it to the on position does the red light (usually) on your dashboard still blink? I've had issues with GM's doing this, something to do with the tumblers in the ignition, or if you have done maintance without disconnecting your battery. If the light is blinking still with keys your security system USUALLY disables fuel supply and sometimes the ability to turn/crank starter. This also comes from damaged programmed keys, your vehicle is not recognizing the key. If this is it, try googling around there is normally a procedure for resetting your security system. Simply disconnecting the battery does not fix this issue either.

2 people found this helpful.
4,045

Jump out the starter relay and see if it cranks, or remove the key cylinder and use a screwdriver and see if it cranks, see YouTube on how to use a screwdriver, and how to remove the key cylinder

2 people found this helpful.
60

When we turn the key ford f550 6.7liter engine can not start ?what happen?please help me

6 people found this helpful.

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