My Jeep was running fine untill i went and got new spark plugs put in two days ago. As soon as i pulled out of the shop, my truck started shifting very hard. Every time it goes into 1st and 2nd gears it shift really hard. But it is worse when i put it in reverse. Is it a spark plug problem? Do i have bad plugs?
Dec 20, 2009 at 9:10 AM