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1995 Mercury Marquis engine

Tiny
KLEGGSKAA1
  • MEMBER
  • 1995 MERCURY MARQUIS
  • 4.6L
  • V8
  • 2WD
  • AUTOMATIC
I have a 1995 grand marquis with a 4.6. If the crankshaft sensor is bad would that cause the coils not to fire. What else would cause it not to fire the coils packs are new the fuses are good
Thursday, October 2nd, 2014 AT 6:27 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,779 POSTS
Yes, a bad crank sensor will shut down spark. If you can access a scanner, see if there is a crank signal to the PCM. No signal = bad sensor.
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Thursday, October 2nd, 2014 AT 6:31 PM
Tiny
KLEGGSKAA1
  • MEMBER
  • 22 POSTS
We changed the crankshaft sensor and it still won't start what else can we try my husband wants to know can we put a wire from coil pins to battery to see if will start then thank you
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Monday, October 6th, 2014 AT 12:04 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,779 POSTS
It doesn't work that way anymore. Do you have access to a real time scanner?
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Tuesday, October 7th, 2014 AT 5:19 AM

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