04 AZ Mustang not liking this Ohio Weather

[Roxanne04]

Need help on quite a few issues..
No Brake lights Shifter wont move.
Put on new sensor and wiring harness. Did not fix.

Heat only blows out floor vent.

Car cranks and wont start always. Sometimes it does..

 

[General karthief]

6 or 8 cylinder?

 

[wmburns]

No Brake lights Shifter wont move.

Shifter won't move because there's no brake lights. The shift interlock isn't "seeing" that your foot is on the brake.

Does the high mounted 3rd brake light work?

Have you checked the fuses in the battery junction box and central junction box? Especially F2.33, F2.41, F2.35, F2.17.

Also wouldn't surprise me if a blown fuse is the reason for the crank with no start. Pay close attention to the part about PATS prove out and confirming that the fuel pump "primes" at initial key on.


1999-2004 MY fuse panel schedule:
https://www.allfordmustangs.com/forums/4-6l-tech/336452-1997-mustang-wont-ignite.html#2984838

1996+ Crank with no start check list
https://www.allfordmustangs.com/forums/4-6l-tech/336452-1997-mustang-wont-ignite.html#2984838

Check the tiny/small vacuum line that goes through the firewall to see if it's disconnected from the engine vacuum source.