Newbie with a problem

M

Mass Marauder

New member
Hello all. I recently joined to learn more about my 03 Marauder. I didn't think I would need help so soon. The story: When my father passed away 12 years ago I inherited his 64 thousand mile Merc. I drove it to my home and parked it in a heated garage. Time flies and now I am ready to drive it. The gas was old so before starting, I removed tank and replaced fuel pump. Gas was slightly yellow but still smelled ok. Used the 10 gallons in lawn mower. New fuel filter and pressure check showed about 60psi. Cranks strong but not a hint of firing. I have some mechanical ability but these Fords are all Greek to me. I am thinking a spark problem or the injectors not getting signal? No codes present. Thank you for any input.
 
Does the fuel pump prime (it's audible) when you turn key to "on" but not crank. I would change fuel filter too with 12 year old gas..prolly gummed up inside
 
The inertia switch is in the trunk on the drivers side in case you were not aware. Check that... then fuel pump relay and fuse.

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svtmerc said:
The inertia switch is in the trunk on the drivers side in case you were not aware. Check that... then fuel pump relay and fuse.

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With sitting that long, could very well be the relay. Tap on it or swap with another like horn or something after confirming it is working.
 
Also... anybody think the FPDM? I don't know how often those become an issue.

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svtmerc said:
Also... anybody think the FPDM? I don't know how often those become an issue.

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Could be, anything is possible especially with electronics. But given it worked when 1st parked, it wouldn't be on my list of 1st things to check.
 
Fuel pump can be heard when key is turned on so power is there. I was thinking noid lights on an injector or is there another way to test for power there? I can't believe all 8 injectors are plugged. I have a ford manual which seems useless. I will try to find what fuel pressure is supposed to be.
 
Here are the pressure specs. from Chiltons.
So it looks like your pressure is good.
8d07c9680d71496c30bb5255caaaab0d.jpg


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I'd say trace the injector harness, make sure a rodent didn't chew into it.

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You could un-plug the FPDM (Fuel Pump Driver Module) cycle the key a few times then plug it back in and see if it fires. The FRDM is in the trunk on the drivers side. You'll need to pull back the trunk liner to gain access to it. If it's bad, any Crown Vic or Grand Marquis FPDM will work. $15 - $25 at a salvage yard.
 
Sounds like no injectors are firing. First check all fuses. If all are good then start it a couple of more times on starting fluid and see if it trips a crank sensor, cam sensor, or MAF code. All three can shut off the injectors.


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If you unplug an injector lead and hook a volt meter up to the two terminals and crank are you getting anything ?
 
I will try that today. Thank you. I do have 12 volts at plug with key on. I actually have power AND ground with key on at the plug.
 
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The fpdm is not tripped. I hear the fuel pump and gauge goes to 60 psi. does this switch kill electricity or mechanical block of fuel? The picture I found of the module looks like it is an electric cut off.
 
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