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

did i fry my cobra's computer?

  • Thread starter Thread starter 94cobra#519
  • Start date Start date Aug 20, 2009
9

94cobra#519

New Member
Jun 1, 2009
86
0
0
fresno cali.
Aug 20, 2009
#1
  • Aug 20, 2009
  • #1
help me diagnose this. my car will turn over and wants to start but wont start. it has fuel, and spark. all the fuses are good. but it just wont start. now let me tell you how this happened. i pulled of my temp sensor and i was trying to see if i could ground it out to see if i could get my fan to kick on. while doing this i accidentally touched the wire going from the sensor to the positive side of the battery and making a small spark, after realizing that it wasnt goin to turn the fans on, i put everything back together and went to start up my car and got the problem above. so i have tried everything i can think of. you got any ideas? also if it would be easy to talk just call me so i can explain it, (559) 977-6063
 

GTA_V6_Mustang

Active Member
Nov 29, 2004
1,326
3
39
Miami, FL
Aug 20, 2009
#2
  • Aug 20, 2009
  • #2
Which wire was it you shorted the 5-volt reference or the ground. But I would think that there is a possibility that you did fry the PCM.
 

nmcgrawj

Advanced Member
Sep 28, 2003
3,651
4
68
Indianapolis, IN
Aug 20, 2009
#3
  • Aug 20, 2009
  • #3
Find someone with a 94-95 mustang who is local to u to test their computer. Can be a stick or auto...u just wanna see if it will fire up.....
 
9

94cobra#519

New Member
Jun 1, 2009
86
0
0
fresno cali.
Aug 20, 2009
#4
  • Aug 20, 2009
  • #4
ok i'll try to find someone.
 
9

94cobra#519

New Member
Jun 1, 2009
86
0
0
fresno cali.
Aug 21, 2009
#5
  • Aug 21, 2009
  • #5
cant find anyone with a computer?
 
9

94cobra#519

New Member
Jun 1, 2009
86
0
0
fresno cali.
Sep 12, 2009
#6
  • Sep 12, 2009
  • #6
i had the same problem! i just got my car back yesterday from the shop. we figured it out. long story short somehow i managed to fry my ecm/pcu/computer in my car. it also fried the tps sensor and it was reading at huge!! volts. almost full throttle. so it was dumping gas into my engine which caused my spark plugs to get soaked in gas. so i replaced the tps and then the plugs. and sure enough it started! BUT it wouldnt idle would only run around 2500 rpm. and sputtered and spewed and just hated running. also the temp sensor was reading -16C then a second later +80C. and all my sensors were off. this whole time never throwing "a code" so i replaced the computer and it runs like a charm!
 
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
396
Fox 5.0 Mustang Tech Jun 25, 2026
AeroCoupe
L
Engine Why won't the motor start if I have spark and fuel
  • LeviAnderson
  • Nov 20, 2025
  • Fox 5.0 Mustang Tech
Replies
3
Views
491
Fox 5.0 Mustang Tech Nov 20, 2025
AeroCoupe
E
2007 GT Stalls when lights or a/c turned on
  • ejscarfo
  • Jun 22, 2026
  • 2005 - 2009 Specific Tech
Replies
3
Views
255
2005 - 2009 Specific Tech Sep 26, 2026
manicmechanic007
G
Resolved Smoking Wiring Issue After GT40 Head Swap
  • Grapes
  • Aug 15, 2026
  • Fox 5.0 Mustang Tech
Replies
17
Views
469
Fox 5.0 Mustang Tech Aug 22, 2026
Grapes
G
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
536
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Aug 30, 2026
General karthief
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?