My 1999 grand marquis won't turn over

Asked by May 05, 2017 at 09:04 AM about the 1999 Mercury Grand Marquis 4 Dr GS Sedan

Question type: Maintenance & Repair

I was sitting at a stop light and my 99
marquis just cut off.. I tried starting it
but it won't turn over... All it does is
crank... I checked all relays,fuses,and
fuel  pump filter.. I even checked the
fuel pump cit off switch in the trunk. I
even changed the fuel pump and
battery.. But I'm not hearing the hum
from the guel pump that i should be
hearing.. I DON'T KNOW!!! But i think
there's no power getting to the pump...
Do anyone have any suggestions??? I
need help figuring this thing out

3 Answers

245

Sounds like the starter is bad

So even when the car is running and i stop at a stop light you mean to tell me that the starter will make the car cut off even after it's been started and running???

245

Sounds like you need a full tune up. When was the last time you replaced the spark plugs ?

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