My 98 dodge grand caravan makes this thudding noise when accelerating. It only occurs while car is in drive and it doesnt occur while coasting.It continues as long as I continue to accelerate. I'd appreciate any help or suggestions, thank you The car does have 177,000 miles but I don't want to replace it yet.

 

Sounds like axles

 

you also might have a wheel bearing going out but they roar more than thump. is there a vib. under acc. if so does it go away when you let off the gas. alan

 

yes, the noise stops when I let off the gas.

 

have to jack both wheels off the ground then runn it in gear and feel the strut / spring for a VIBRATION if they both feel the same i would think axle / also check the boots for ripes or greese all over/ it not a allwheel drive ? then you have to jack all 4 wheel off the ground alan