• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 1994 - 1995 Specific Tech

Computer Question

  • Thread starter Thread starter Sancho
  • Start date Start date Jun 29, 2008

Sancho

New Member
Dec 11, 2007
7
0
0
Jun 29, 2008
#1
  • Jun 29, 2008
  • #1
Hi Its been while but I am having trouble with a client's SN95 Stang. Costumer stated that they swapped a 5 Speed tranny from a Automatic but still using same EEC computer from the Automatic Transmisson also noticed that VSS Veihicle Speed Sensor is unplug or no working. MY question is are Manual and Automatic EEC computers interchangeable??
The probem with the Stang is that ignition cuts very quickly like for second then grabs again specially when when I put a load on throttle, To be more specific if feels like the rev limiter issue but this problems happen at all RPM Example #3, 4, and sometimes even 5 RPM. All ignition components have been replace with new unit and still problem duplicates. Thanks in Advance and please let me know if anybody know what could cause this issue
 

Don 95Vert

Founding Member
Oct 1, 1999
1,091
1
39
Delaware, OH
Jun 30, 2008
#2
  • Jun 30, 2008
  • #2
Yes they are interchangeable - from auto to manual, but not the reverse - you do need a chip if using an auto PCM in a manual to shut off the auto functions. The VSS is necessary for both auto and manual cars.
Don
 

Hef5.0weisen

20+ Year Stangneter
Mar 5, 2004
574
4
28
NorthWest Florida
Jun 30, 2008
#3
  • Jun 30, 2008
  • #3
I had the same problems when I did my tranny swap, I had the manual computer, just hadn't swapped it out...didn't know where the thing was hidden. Drove around for a while like that, then one of the stang mag's did the swap article, highlighting the computer location. Swapped it, no more ignition problems. This was back in 96, before the populairty of a chip. As Don said, a chip will take care of it or put in a 5 spd computer.

good luck
 

Sancho

New Member
Dec 11, 2007
7
0
0
Jul 13, 2008
#4
  • Jul 13, 2008
  • #4
Ok guys I am looking to purchased the ECM for the Stang but there two different ID### numbers and dont know which one I will need. What is the difference between the two??

ID# F4ZF-EA and the other is ID# F4ZF-JB

Thanks in Advance
 

final5-0

Mustang Master
Apr 6, 2003
6,817
12
79
DFW Texas
Jul 14, 2008
#5
  • Jul 14, 2008
  • #5
Sancho said:
Ok guys I am looking to purchased the ECM for the Stang but there two different ID### numbers and dont know which one I will need. What is the difference between the two??

ID# F4ZF-EA and the other is ID# F4ZF-JB

Thanks in Advance
Click to expand...

Google is your friend

F4ZF-EA - Google Search

F4ZF-JB - Google Search

Hope this helps

Grady
 
You must log in or register to reply here.

Similar threads

B
Electrical Why does my fox body keep frying eecs
  • brandyn200
  • Jun 20, 2026
  • Fox 5.0 Mustang Tech
Replies
8
Views
470
Fox 5.0 Mustang Tech Jun 25, 2026
AeroCoupe
F
Fox 1990 Mustang GT 5.0 A9L – Engine suddenly shuts off but immediately restarts when key turned
  • FishermansFriend
  • Aug 9, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
16
Views
652
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Aug 30, 2026
General karthief
S
Car shakes when taking off help???
  • STANKYstangs
  • May 10, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
12
Views
501
1996 - 2004 SN95 Mustang -General/Talk- May 27, 2026
LILCBRA
89 LX Electrical Troubles
  • fun331
  • Oct 25, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
5
Views
440
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Nov 27, 2025
fun331
Resolved 93 Mustang 5.0 - Cranks but does not start
  • dan50
  • Jul 18, 2026
  • Fox 5.0 Mustang Tech
Replies
6
Views
433
Fox 5.0 Mustang Tech Jul 18, 2026
dan50
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 1994 - 1995 Specific 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?