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  • SN95 4.6L Mustang Tech

2003 Mach 1 cornacopia of codes

  • Thread starter Thread starter Rusty67
  • Start date Start date Dec 23, 2012
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2002BLGT

Well-Known Member
Dec 18, 2003
2,945
4
59
Bedford VA
Feb 24, 2013
#21
  • Feb 24, 2013
  • #21
Sounds like the car should go to a local Ford dealer for precise diagnoses
 

Rusty67

20+ Year Stangneter
Dec 3, 2002
3,749
37
109
LA, CA
Feb 25, 2013
#22
  • Feb 25, 2013
  • #22
I am sending my ECU out for diagnostics today.
 

Rusty67

20+ Year Stangneter
Dec 3, 2002
3,749
37
109
LA, CA
Apr 20, 2013
#23
  • Apr 20, 2013
  • #23
Ok, update..
ECU came back from the testing place, it is not the problem. I removed the Quarterhorse from the ECU when I sent it out and left it off when I reinstalled the ECU. I am now NOT getting a huge list of codes I was before.

I ended up throwing a P0308 code. I pulled the COP units and plugs out to check them. Everything looked ok. I swapped COP 8 and COP 5. I again had a misfire warning. I plugged in my mongoose cable and checked for any hiden codes. I didn't see any but I checked the TIDs and I am failing these ones:
Phase 2 0.020 cruise leak check vacuum bleed-up and max leak threshold
Phase 4 Vapor generation max change in pressure and max threshold
Phase 4 Vapor generation max absolute pressure rise and max threshold
Cylinder 05 misfire rate and catalyst damage threshold
Highest catalyst-damage misfire and catalyst damage threshold misfire rate
Highest emission-threshold misfire and emission threshold misfire rate

Obviously the COP unit was bad. I will be replacing that. What about those Phase 2/Phase 4 TID failures ?
 

Rusty67

20+ Year Stangneter
Dec 3, 2002
3,749
37
109
LA, CA
Apr 29, 2013
#24
  • Apr 29, 2013
  • #24
Finally got my COP unit in the mail today. Jackasses didn't tell me they were going to mail it from the other side of the damn country so it took a week to get here.

Put the COP in and cleared the codes. The car hasn't run this well in forever.....

I feel dumb as apparently the quarterhorse was the cause of all ther weirdass basket o codes I was getting.

I am still failing some TIDs but I'll post a new thread for that as at this point it is way beyond the scope of the OP.

To everyone that said I should pull the quarterhorse unit off and see what happens, you guys were right and I feel dumb.
 
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