1994 Mercury Cougar No Fuel

1994 MERCURY COUGAR
130,000 MILES • V8 • 2WD • AUTOMATIC
Avatar
DON33952
  • MEMBER
  • 5 POSTS
Fuel pressure absent at injectors... checking fuel emergency/inertial shutoff switch... switch has no voltage when plugged into harness and one wire in harness has only 6 volts when switch is unplugged... Is this wiring an input to a high impedance relay circuit that actually does the switching on/off of voltage to fuel pump or does one of these wires go directly to the fuel pump? Thanks…
Jan 16, 2009 at 9:04 PM
Advertisement
Avatar
ISLAND_PRIDE71
  • MEMBER
  • 62 POSTS
Turn key On @ the inertia fuel cutoff switch, check for power on the pink and black wire. Do you have power? Let me know.
Jan 16, 2009 at 11:12 PM
Avatar
DON33952
  • MEMBER
  • 5 POSTS
switch has no voltage when plugged into harness and one wire in harness has only 6 volts when switch is unplugged.
Jan 17, 2009 at 8:28 AM
Advertisement
Avatar
ISLAND_PRIDE71
  • MEMBER
  • 62 POSTS
When you turn key to run you should hear the fuel pump relay click-if not check the computer control of the relay.

At the inertia switch I want you to jump the pink and black to dark green and yellow-did the fuel pump come on-if not test the fuel pump relay
Jan 17, 2009 at 5:37 PM
Avatar
DON33952
  • MEMBER
  • 5 POSTS
Can not locate fuel pump relay... thought it would be in the "high current fuse box" but it is not!
Any sugestions? By the way... Thank You very much for the help so far!
Jan 18, 2009 at 9:08 PM
Avatar
ISLAND_PRIDE71
  • MEMBER
  • 62 POSTS
Fuel Pump Relay is integrated within integrated relay control module
Jan 19, 2009 at 6:23 PM
Avatar
DON33952
  • MEMBER
  • 5 POSTS
Thanks...The IRCM (Integrated Relay Control Module) just in front of the air filter, front of the car, passenger side according to WikiAnswers in case someone else is having same problem finding it.
Jan 19, 2009 at 9:35 PM