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Chris (aka- Moose)
Chris (aka- Moose), Mercury Technician
Category: Mercury
Satisfied Customers: 1972
Experience:  16 years experience with Mercury
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Stopped while travelling started back up made home but will

Customer Question

Stopped while travelling started back up made home but will not crank now. Has power but no response in ignition start position
JA: Have you checked the fuel supply? And are all the spark plugs working?
Customer: Spark plugs are brand new. Could it be fuel pump.
JA: What is the model/year of your Ford?
Customer: 2005 mercury grand marquis.
JA: Are you fixing your Grand Marquis yourself? What have you tried so far?
Customer: Yes I want to, but don't know where to start.
JA: Anything else you want the mechanic to know before I connect you?
Customer: It's a 2006.
Submitted: 2 months ago.
Category: Mercury
Expert:  kalamykid replied 2 months ago.

Do you have a digital volt meter and a test light so we can do some testing?

Customer: replied 2 months ago.
I do have volt meter
Customer: replied 2 months ago.
What are we testing for
Expert:  kalamykid replied 2 months ago.

Can you tell me more about what the car did when it stopped on you, and did it start right back up?

Customer: replied 2 months ago.
After a few seconds it started right up but now there is nothing
Expert:  kalamykid replied 2 months ago.

Do the lights on the dash light up like they should when you turn the ignition switch to the run position?

Customer: replied 2 months ago.
everything lights up.
Expert:  kalamykid replied 2 months ago.

Can you go out to the car, set the emergence brake, turn the ignition switch to run and put the transmission in neutral and see if it will turn over please?

Customer: replied 2 months ago.
No, there is nothing.
Expert:  kalamykid replied 2 months ago.

So the starter did not even make a noise?

Customer: replied 2 months ago.
No not a peep
Expert:  kalamykid replied 2 months ago.

Can you set your meter to dc volts, hold the black test lead to a good ground and with the ignition switch in the run position, test both sides of all the fuses in the fuse box under the hood and tell me what fuses do not have any voltage to them, and what fuses only have voltage to one side of the fuse please?

Customer: replied 2 months ago.
I can do it when it gets bright out.
Expert:  kalamykid replied 2 months ago.

Thank you. About how long will that be? I want to make sure I ill be online when you are ready for me.

Customer: replied 2 months ago.
In about an hour or so
Expert:  kalamykid replied 2 months ago.

Thank you. Chat with you then.

Customer: replied 2 months ago.
checked all fuses and they are good. took off starter and jumped it works fine.
Expert:  kalamykid replied 2 months ago.

What fuses did not have power to either side and what fuses only had power to one side?

Customer: replied 2 months ago.
they all had power thru both sides with the key in the on position
Expert:  kalamykid replied 2 months ago.

Did you check all the fuses in the fuse box under the dash?

Customer: replied 2 months ago.
i did and they are all good also
Expert:  kalamykid replied 2 months ago.

I do not care if the fuses are good or not, I need to know if they have 12 volts to them on both sides. Did you test them with your meter set to dc volts and the black lead on a good body ground, testing the tops of the fuses with the red test lead with the fuses still in the fuse box?

Customer: replied 2 months ago.
no i never did that with those fuises
Expert:  kalamykid replied 2 months ago.

I need to know what fuses do have 12 volts on them and what fuses do not to be able to help you. Can you please do this test for me on all the fuses and tell me what fuses do not have power on either side as well as what fuses have power only to one side please?

Customer: replied 2 months ago.
tested all fuses and they all have a range of voltage running thru them rangeing from 4 volts to 7.5 vots
Expert:  kalamykid replied 2 months ago.

Did you have the ignition switch in the run position? What is the voltage at the battery? Did any of the fuses have 12 volts?

Customer: replied 2 months ago.
the ignition was in the rum position, voltage at battery is 12.5 and none of the fuses had a complete 12 voltls running thru them.
Expert:  kalamykid replied 2 months ago.

And these results are for both the under dash fuses as well as the under hood fuses correct?

Customer: replied 2 months ago.
sir those are the results for the under the hood and under the dash fuse panels.
Expert:  kalamykid replied 2 months ago.

Can you remove the battery cables and clean them please? after you have cleaned them, reconnect the battery and see if you have 12 volts on the fuses under the hood please.

Customer: replied 2 months ago.
I checked the fuses fuses undr the hood and they all cheked with 12 volts misunder stood question sorry
Expert:  kalamykid replied 2 months ago.

So you have 12 volts to the fuses under the hood, but low voltage to the fuses under the dash correct?

Customer: replied 2 months ago.
That is correct sir
Expert:  kalamykid replied 2 months ago.

Can you replace the F1.103 and F1.104 fuses in the fuse box under the hood. These two fuses feed power to the under dash fuse box. You can swap these two fuses out with fuses in F1.101 and F1.102. Then see if you have 12 volts in the fuses under the dash.

Customer: replied 2 months ago.
Done the swap and it did increase the voltage to 8 volts +
Expert:  kalamykid replied 2 months ago.

Will the car start?

Customer: replied 2 months ago.
wont know until i put the starter back on and its raining out right now. but i noticed the fuel pump dont kick on for that brief moment before ignition.
Expert:  kalamykid replied 2 months ago.

Get the starter back on and lets see if it will start.

Customer: replied 2 months ago.
still did not make a peep
Expert:  kalamykid replied 2 months ago.

Can you check all the fuses again, but this time wright down each fuse and what the voltages are for each side of them. I need to know exactly what the voltages are so I can determine where we need to go next to find the short.