What would cause a 1993 Dodge half ton truck to have a vibration when slowing down?
If it is while you are braking, the rotors or druma are warped.
Your vibration can be from a lot of sources. Tires, balanced? Checked them for a separation/out of round. Tie rod ends, stabilizer, ball joints? Even a torn motor mount can cause a vibration. A warped rotor can cause a vibration when the high spot passes through the caliper. You have a lot of things to check out. Good luck
is your truck 4 wheel drive, if so have your universal joints checked, also have your front end parts checked(tie-rods etc.) if it is not have the balance checked on the front tires, in both cases, sometimes when you get in mud, mud will build up inside of rims and cause balance to be out. if all these are ruled out, have the tires checked for a broken belt
What would cause vibration at 45mph in your peterbilt 387 that goes away at 50 mph the returns again at 70 mph?
I'm not a big rig mechanic but I've heard this question before. A head mechanic for one of the big truck fleets said it sounds like the truck has a problem with the three-axle alignment. At 50 mph you are at the least amount of strain on the system. The rest of the time the system is above or below the correct "harmonic" to correct the vibration.
my husband has a 1998 dodge truck and he uses GM Dexron-III/Mercon Automatic Transmission Fluid. You can buy at any automotive store. Dodge,Chrysler and Jeep products require ATF + 4 made by Chrysler. While it is okay in a pinch to top off with GM Dexron-III/Mercon, replacing it with that will cause you problems. They are different.