car shakes help
you would also be well advised to look at the model number stamped on the top of the remaining 3 coils (you've already had to replace one correct?) if they don't end in R they are not the revised model and you should replace them. Or at the very least purchase all 3 and stow the rest in your trunk. It is literally a matter of time before they fail and rather than screw around with finding replacements when they do go you'll have 'em on hand.


