1994 Mercury Cougar No Fuel

DON33952

MEMBER
1994 MERCURY COUGAR
V8
2WD
AUTOMATIC
130,000 MILES

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.

6 Replies

ISLAND_PRIDE71

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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.

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Friday, January 16th, 2009 AT 11:12 PM

DON33952

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5 POSTS

Switch has no voltage when plugged into harness and one wire in harness has only 6 volts when switch is unplugged.

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Saturday, January 17th, 2009 AT 8:28 AM

ISLAND_PRIDE71

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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

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Saturday, January 17th, 2009 AT 5:37 PM

DON33952

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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!

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Sunday, January 18th, 2009 AT 9:08 PM

ISLAND_PRIDE71