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

no ground to injector

  • Thread starter Thread starter 01mustgt
  • Start date Start date Nov 20, 2010
0

01mustgt

New Member
Nov 3, 2010
7
0
0
sweeny, tx.
Nov 20, 2010
#1
  • Nov 20, 2010
  • #1
i have a friend who owns a 2004 mustang gt and he cant get a ground to the injector. when he does his multimeter tests, it shows he has power constantly but has no ground. i let him read some of the replys to my old threads but still cant find anything to work. please help cuz i really wanna see how much faster my mustang is compared to his stock gt.
thanx dane.
 

trinity_gt

10 Year Member
Jan 31, 2003
3,125
81
99
Canada
Nov 20, 2010
#2
  • Nov 20, 2010
  • #2
Ground is provided by the PCM by switching a semiconductor (solid state) switch. Bottom line: A simple ohmmeter test will not suffice here.
 

wmburns

SN Certified Technician
Aug 14, 2009
5,892
514
204
Houston Texas
Nov 21, 2010
#3
  • Nov 21, 2010
  • #3
Buy or rent yourself a set of "noid" style test lights. This will help confirm if the injectors are actually being "pulsed".

As said before, the injectors and COPS are ground start devices. Which means they have power "at all times". The devices are fired by the PCM completing the "path to ground".
 
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