Search results

The car has 40,000 miles on it. I'm going to do all new spark plugs next weekend can clean the MAS and see if that helps. It seems pathetic to me that the dealership didn't change all of the plugs when they found the bad one. To make it worse they told me that they found the bad one and...

I have a 2012 Tahoe that idles very rough at times. When sitting at a stop light the truck shakes. The tach will drop and come back up. It seems a lot worse when the AC is on. I took it to the dealership and they found a bad spark plug and changed it. The idle got better but is still not...