TUNEUPS ON 2001FORD TAURUS SEL V6 on 2001 Ford Taurus

WHEN DO I NEED ATUNE UP ON THIS MODEL CAR THE CAR MILAGE IS GOING DOWN WITH THE AIRCONDITION ON HERE IN FLORIDA I HAVE 79000MILES ON THE CAR AND THE CAR BUCKS WHEN THE AIR CONDITON BLOWER IS ON DO INEED A TUNE UP AND HOW MUCH DOES IT COST THANKS LOU

by in Port Orange, FL on July 15, 2011
1 answer
ANSWER by on July 17, 2011
Can't advise on cost,but if it hasn't been done previously,you definitely need new spark plugs.The front three are very easy to-the rear three require a bit of disassembly. I just went through a probelm with mine where the car ran smooth except with ac on and when I first started the car.The problem was a bad coil.