Why does my car sputter every now and again when my a.c. is on and I'm going about 60mph? It only does this 3sec rumble when the ac is on and I'm going over 55mph

Asked by Sep 25, 2014 at 01:17 PM about the 2000 Mercury Grand Marquis LS

Question type: Maintenance & Repair

2000 mercury grand marquis 67k miles.

6 Answers

68,295

The ac put,s strain on motor,even at this speed,have you changed plug,s and wire,s lately?

No..I got the car about 6 months ago and it's always done this.

68,295

Change plug,s and wire,s.

Which ones

68,295

All of them,spark plug,s to start,then if it continues,change the wire,s.

Thanks

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