2001 Sentra GXE problem
I have a 2001 Sentra GXE that is starting to act up. It idles fine in park but when you put it in drive or reverse with your foot on the brake it starts to violently shake. As soon as you take off it bogs down a little bit but smooths out around 15mph. Any ideas on what could be causing this? It ran just fine yesterday, but started shaking this morning. Oil and coolant are good.