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Poor engine performance one bad coil

Tiny
STEVEN SCOTT
  • MEMBER
  • 1999 LINCOLN CONTINENTAL
  • 180,000 MILES
I have a 99 Lincoln continental that had a miss while idling, and loss of power during acceleration. Checked all eight coils and replaced one which tested bad. Also replaced fuel filter and plugs. Now car fires as if timings off and wont start. I replaced 1 coil, plugs, fuel filter should I clean off the dielectric grease I used? This car ran good prior to this
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Thursday, October 6th, 2011 AT 12:23 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Do you know what cylinder is missing? Have you checked for trouble codes? Also, I noticed you replaced one coil pack. Was there a miss prior to the work? You said no, but I need to confirm why the coil was replaced.
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Thursday, October 6th, 2011 AT 2:01 AM
Tiny
STEVEN SCOTT
  • MEMBER
  • 2 POSTS
Yes there was a miss, tested all eight coils and replaced the one that tested bad, cyl. 5 which was the cyl. Missfireing. Also replaced crank position sensor today, this changed nothing. Still cranking as if timings off. Compression test shows all cyl. Well within spec.. Maybe cam position sensor
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Saturday, October 8th, 2011 AT 1:45 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Before you change the cam sensor, try switch the #5 coil with another one to see if the miss changes cylinder. Also, make sure the injector on cyl 5 is getting power and working.
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Saturday, October 8th, 2011 AT 3:24 AM

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