2003 ford mustang gt

  1. D

    3rd brake light wiring

    So I have an 03 Mach 1 with the SVT spoiler. I bought the car with the spoiler already swapped and was replacing the 3rd brake light with a new sequential LED I bought off American muscle. It comes with the 2 wire connector end. The previous swap already had the correct connector on it, but long...
  2. M

    2003 production numbers

    Looking for information like this posted on this page but for 2003 dark shadow grey instead of 2004 crimson.
  3. T

    No power to the MAF Sensor

    Having troubles starting my 03 gt 4.6 , I get cranking but no firing. Hooked the scanner up for the live stream while cranking and my MAF reading stays at 0.09 lbs... After cranking the car I’m hearing a air leak near the firewall by the passenger side. I’ve wiggled the hoses to see if the...
  4. C

    Theft sign solid; car won’t start.

    I’m notcompletely sure what’s going on. I’m hoping it is just in need of a new battery & nothing to serious. I have 2003 Mustang GT. First, I noticed something going wrong when I would hit my brakes to slow down or holding it at a stop light my entire radio would shut of. Then as soon as I...
  5. Junkyard 03GT

    Progress Thread 2003 Ford Mustang GT Build Log

    Hi guys, I just bought my first ever new to me mustang this past weekend. A 2003 Ford Mustang GT with the manual transmission. I drove it home and immediately got to work. Known issues - CEL P0442, P0136, P0141, P0156, P0161 Interior - broken AC fans, door handles, radio turns on but has...
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