Question about 1989 Mercury Cougar
19879 Cougar XR7-Supercharged, 3.8, five speed car. I put a pressure guage on the fuel line, and cranked the engine. I have Zero pressure. Not even a drop. I cannot hear the pump either. It has plenty of fuel. Car has been sitting for two years. My fuses look good.
This sounds like the Inertia switch is tripped. This switch is either in the trunk or behind one of the kick panels. This is a resettable switch that cuts power to the fuelpump in a collision. Often a bump of the correct frequency will trip this.
You also have a fuelpump relay in one of the Powerboxes. The sequence is such that power goes to the relay and the wire from the relay goes rearward to the inertia sensor in the trunk(Or kickpanels) which acts like a breaker and then the power goes to the pump.
Posted on Mar 19, 2014
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Posted on Jan 02, 2017
I have a similar problem with my 99 cougar. It will start when I spray starting fluid in the intake and I have gas at the test point but it doesn't seem to make it to the injectors.
Posted on May 16, 2012
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