About 4 days after the trip it began vilently shaking. I had put regular unleaded in the tank, let it get almost down to empty before I refilled it with reg unleaded. Thats when the trouble started. I contacted the previous owner and they informed me that it shakes sometimes when not given mid grade gasoline. Since then, I have put mid grade in it, which has done nothing to improve the shaking.
All of the guages read fine. The knocking/shaking is constant. It gets worse when the A/C is turned on. Previously, the A/C blew extremely cold, now it blows warm sometimes. Basically the shaking has phases: it basically has three-four levels of knocking. At park, A/C off, it doesn't knockas badly. At park, AC on, it knocks. At Drive, A/C off, it knocks a bit, At Drive, AC on it knocks hardest.
The check engine light is on constant, but was when purchased. During the shakes it sometimes flashes.
have the same problem?
Monday, September 21st, 2009 AT 11:58 AM