88 F-150 driving jumpy
No problems first couple of weeks, but today after a short highway trip (4 or 5 miles at 65-70 mph), the truck started jumping noticeably when I was driving slower on residential streets. I noticed it first in 3rd gear, I think.
Truck is driven about 15-20 miles per day, just to work and back.
Now I'm getting a jerky ride in most all gears, especially 3rd through 5th. Almost feels like I have to give it extra gas constantly at 55-60 MPH or it will just jump and shimmy like crazy.
The check engine light even flashed once or twice tonight.
Before I have to take it in and mess with a mechanic (which is looking inevitable), I hoped someone might have a clue as to what this problem sounds like.
I know it's a truck and it's going to drive like a truck, but this jerky, jumpy ride is not the way it has been driving. I am convinced there is a problem. My truck drives differently today than it has before.
Truck has close to 150,000 miles on it. I have maintenance records, things have been replaced, of course, but seems to have been decently taken care of. Guy I bought from never had any trouble, and I know him personally and know this is true.



