Progress Thread 2003 Ford Mustang GT Build Log

replaced all of these:

*fuel pump
*fuel filter
*fuel level sensor
*gaskets and stuff for the fuel pump
license plate covers
battery holder

I can actually hear the new pump prime unlike the old oem one.. seems great I like that.
 

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more new parts, new to me parts from the Junkyard and also painted a bit of stuff black.

New stuff -
Dorman 1 Piece Windshield Cowl
Quick Disconnect Negative Terminal Connector
Windshield Wipers

Passenger Door Upper moulding replaced (junkyard)
Custom DIY K&N Bracket Mount from a older mustang fitted to my system + (cut/drilled) + Painted

Painted -
Windshield Wiper holders
Painted Side Trim by driver/passenger door
Speedometer Trim (replaced from junkyard) + Painted
Center Radio Bezel Trim replaced (junkyard) + Painted
Last piece that was painted - Shifter Trim

ISSUES:
P0456 - Code keeps popping up sooooo I replaced the Vent Solenoid off a 04 Junkyard Mustang, seems to have possibly fixed my issue.

Car is running great, until after a certain time car seems to have RPM drop.

- Checked Short/Long trim readings

Car is Negative readings at idle and positive under load (2500 rpm) (LONGTRIM) Could be because of the evap leak but I think my injectors are the problem and my computer isn't adjusting to it quick enough. I will order a new set of injectors and go from there.

Currently no codes are present after changes and over 100 miles driven now but the car did stall once coming to a parking lot entrance(today). I was braking and turning in when it shut off.
 

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August / October Update:

Oil/Filter Change: no metal shavings or anything to report
IAC cleaned again - new gasket
Coil Packs checked and tightened down
P0456 no longer came back
Newly rebuilt injectors
Passed inspection

Crankshaft Sensor replaced - The one on the car was for the 2011 CV motor. I purchased a Masterpro CSS for a mustang and now the car feels way better.

NVM THE CAR STILL STALLS :( !!

NO CODES THO
 

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Last edited:
Happy Holidays!

New/New used stuff installed - :)
MIL Eliminators installed over the o2 bung setup
OEM injectors back on
Honeycomb on Hood and side vents Painted Gloss Black / Clear
Center Console Carpet found at junkyard and cleaned up and installed to mine
Prop Holder / Radiator Cover found at junkyard and cleaned / painted and installed
A "new" used junkyard carpet cleaned and installed (no holes/rips!)
4 Lionhart 503 Tires / Balanced / installed - much better than the ones on the car
New OEM style headlights
New aftermarket Radiator replacement installed (coolant flush as well)
Aftermarket carpet floor mats
Nylon Spacer Throttle mod
 

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