Have been driving my truck for couple days. I noticed that it shakes when I got up to 40 MPH then keep shaking until 45 MPH. Then It goes away as I go up over 50 MPH. I am able to drive at 60 MPH with no shake. I watch the tacho. I didn't go over 2250 RPM. Then at every red light, I started over and watch everything going on. After this, I suspected that it is not injectors at all.
Right now, I am suspecting bad tires as they could be out of balance. One more thing to think about... driveshaft. Anyone experience bad driveshaft or that it went out of balance?
'95 F-350 XLT PSD, CC, 2WD, Garrett Turbo AR 1.1, 5spd ZF tranny, LUK, 4.10 Limited Slip, just added Dual Arm Tenisoner. Just added my ol' vacuum gauge to monitor my vacuum pump.