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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
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New Computer (pcm)

  • Thread starter Thread starter Jeremy F
  • Start date Start date Nov 11, 2013

Jeremy F

New Member
Sep 28, 2013
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2
Nov 11, 2013
#1
  • Nov 11, 2013
  • #1
I have a 1992 Mustang 5.0 all stock and my computer (PCM) died on me. Does anyone have any ideas on what kind of computer I should get? What are the differences between computers and what one would be able to handle modifications if I decide to make any?
 

Shakerhood

20+ Year Stangneter
Oct 28, 2004
3,361
211
114
Ohio
Nov 11, 2013
#2
  • Nov 11, 2013
  • #2
Look in the Passenger Door Opening for the ECU Code, Example A9L
 

f8tlfiveo

My wife likes my spool and blow-off valve.
Aug 8, 2007
1,585
102
64
Lancaster, PA
Nov 12, 2013
#3
  • Nov 12, 2013
  • #3
It's an A9l if it is 5 speed, A9P if it's auto. I would check craigslist first. Then eBay. Don't pay more than 100$. They are out there
 

Jeremy F

New Member
Sep 28, 2013
15
0
2
Nov 12, 2013
#4
  • Nov 12, 2013
  • #4
That sticker must be gone but it is a 5 speed. So it's A9L. I'll start looking around for it
 

James.Little

Member
Jan 6, 2013
135
4
19
Lubbock, Texas
Nov 12, 2013
#5
  • Nov 12, 2013
  • #5
Some people may knock of me for telling you, but, you can put a A9P back in there. I am running a A9P on a 5-speed. The only thing is when shifting, the RPMs go up about one RPM for a split second before dropping down again, not really a big deal in my opinion.
 

larrym1961

5 Year Member
Dec 18, 2010
570
36
49
Idaho Falls Id
Nov 13, 2013
#6
  • Nov 13, 2013
  • #6
James.Little said:
Some people may knock of me for telling you, but, you can put a A9P back in there. I am running a A9P on a 5-speed. The only thing is when shifting, the RPMs go up about one RPM for a split second before dropping down again, not really a big deal in my opinion.
Click to expand...
Well I am not going to knock you. I am using a C3W '93 auto PCM with my 5 speed and it works just fine.
I was told by a Ford Racing Electrical Engineer that you can use an auto trans PCM with a 5 speed car but you can't use a manual trans PCM in an automatic car.
He also told me that a little known fact is that the auto PCM has just a slightly hotter tune in it than the manual trans PCM to compensate for the power robbed by the automatic transmission compared to a manual.
 

84Ttop

They make new pistons every day, so why worry?
5 Year Member
Jul 2, 2009
5,222
3,254
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South Jersey
Nov 13, 2013
#7
  • Nov 13, 2013
  • #7
A9L in my C4 powered car and no problems here. Tuning with an Anderson PMS in this instance however.
 
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