I have a 2013 Grand caravan with 67,000 miles on it. The last few days I have been having problems, well even before that. About 4 months ago I was parked and idling and the engine ran really rough, engine light came on and it stalled out. Engine light disappeared after a few days. About a month ago I noticed that while driving, the car seems to be hesitating when driving 45mph to 65mph. The best way I could describe it is that it felt like the car was taking two steps forward and one step back. Forward and back movement/hesitation while I was driving. Then Monday, started the car in the garage, backed out, and suddenly the car couldn’t go above 20mph, no matter how much gas I gave it. Engine light kept flashing on and off. The worst was the horrible shaking the car was doing. Really scary shaking. I quickly turned around and parked in the driveway. Thought it smelled funny when I got out of the car. I let it sit and turned in on an hour later, drove to the mechanic. The car drove fine. They hooked it up and couldn’t pull a code. They ran tests and nothing wrong with the car! They ended up saying there is something wrong but something is wrong with my computer because it is not registering the code so they don’t know what is causing the shaking. So, I have an appointment next week with the dealer to look at the computer. Then today, same exact thing happens, parked in the garage overnight, backed up, put it in drive and with 15 seconds it happened. This time though I came back home, turned it off, waited 60 seconds and turned it back on and everything was perfectly fine. There has been no sounds associated with all of this. The car has been silent. I did notice that the wheels shakes going 70-75mph but I just had the tires rotated and balanced two weeks ago. Maybe related maybe not. I did some research and wondered could it be spark plugs, which shouldn’t need to be changed to 100,000 miles. Could it be the EGR valve?
Thoughts ladies and gentleman?
Thanks for the help,