• Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

p1639 code, could this have been the problem all along?

  • Thread starter Thread starter HurricaneJesus
  • Start date Start date Aug 14, 2009

HurricaneJesus

Member
May 6, 2004
160
2
18
Springfield
Aug 14, 2009
#1
  • Aug 14, 2009
  • #1
My '02 GT with '03 engine threw this code: P1639
"Vehicle ID Block Corrupted: Not Programmed"
Car dies at idle, at speed, no rhyme nor reason. Sometimes if I leave the key in the on position long enough the odo will --------- and then the fan comes on.
This was happening before the engine change....could this have something to do with it? Any ideas on who to take it to?
 

COramprat

...I can take it. I think.
20+ Year Stangneter
Mar 2, 2003
8,474
1,463
223
Sea of Tranquility
Aug 15, 2009
#2
  • Aug 15, 2009
  • #2
PM Mike (svttech) and see if he has any insight.
 
B

blubullett

Member
Jun 22, 2006
535
6
18
Modesto, CA
Aug 15, 2009
#3
  • Aug 15, 2009
  • #3
Sounds like a dealership problem. Key isn't programmed or something to do with the antitheft. Do you have a tune? Battery die when it was programing?
 

HurricaneJesus

Member
May 6, 2004
160
2
18
Springfield
Aug 15, 2009
#4
  • Aug 15, 2009
  • #4
No tune. Just took it to the dealership for a reflash and they claim the PCM was from a Ranger, then when they tried to reprogram it it wouldn't accept any codes....now I need a new PCM. This is very very fishy to me and I feel like they just fried my PCM and want me to foot the bill....
 
B

Bullitt5339

New Member
Jun 19, 2009
12
1
0
Aug 15, 2009
#5
  • Aug 15, 2009
  • #5
That's an easy thing to check and see if they're feeding you a line. Just get the catch code off the computer, and look it up to see what vehicle it came out of.

Then there's no doubt about it.
 

HurricaneJesus

Member
May 6, 2004
160
2
18
Springfield
Aug 19, 2009
#6
  • Aug 19, 2009
  • #6
Welp, so far so good. Only time will tell. I've got the original PCM and I'll check that tonight. They were nice enough to give me an extra key and fix my dodgy drivers' side window no charge....of course, they also found a misfire in cyl 1 that they wanted 350 bucks to fix but that's something I can handle...
 
You must log in or register to reply here.

Similar threads

Engine Throwing codes 94, 33, 34, 44, and sporadic engine shutoff.
  • Ryu
  • Oct 9, 2024
  • Fox 5.0 Mustang Tech
Replies
11
Views
851
Fox 5.0 Mustang Tech Oct 16, 2024
89ripper
G
2006 Mustang GT o2 Sensor Wiring Issue Car Bogging/Choking
  • GCantero93
  • Sep 5, 2025
  • 2005 - 2009 Specific Tech
Replies
4
Views
857
2005 - 2009 Specific Tech Sep 6, 2025
Noobz347
T
  • Locked
1990 2.3L automatic - real bad engine sputtering
  • the_steve_randolph
  • Jun 13, 2024
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
10
Views
1K
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jun 14, 2024
the_steve_randolph
T
I feel like I'm chasing my tail with this thing
  • LILCBRA
  • Oct 23, 2023
  • Other Auto Tech
  • 2
Replies
36
Views
5K
Other Auto Tech Apr 12, 2024
LILCBRA
J
89 2.3 LX running rich, hesitation on acceleration, high and hanging idle Help!
  • jpstucky
  • Jun 13, 2023
  • 2.3L (N/A & Turbo) Tech
Replies
4
Views
3K
2.3L (N/A & Turbo) Tech Jun 15, 2023
jpstucky
J
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?