truck shakes while towing gooseneck

[xtrkustoms]

hi i have a f240 cc sb with the spartan tunes I recently bought a 24 ft gooseneck trailer. i have noticed that when towing with a load on the trailer the car starts to shake not sure if its the motor or the trans has anyone had something similiar happen i have swicthed to the 150 to see if that makes any difference. any help or ideas would be apprecited thanks

[Ipkyss]

are you talking a front to back surge that happens once and a while or a constant vibration?

[xtrkustoms]

It's not constant just when the truck is under load while going up grades or when I hitsleeds of around 73mph

[zeddy]

how heavy is the trailer?

[xtrkustoms]

Thriller with Load Probably around 110000 lbs

[MD05]

My Guess without knowing how many miles or how hard they were is a Torque converter sudder/slipping or clutches startign to slip under load.

Change the Trans fluid and filter to start, and take a look at the fluid coming out (burnt is not a good sign, nor is seeing particles in the fluid).

[04hdfatboy]

it could also be axel wrap

[XPLOSIV]

Originally Posted by xtrkustoms

Thriller with Load Probably around 110000 lbs

You probably shouldn't be towing 110,000 lbs. You're truck is just telling you it's pissed..

[UofMF250]

Originally Posted by XPLOSIV

You probably shouldn't be towing 110,000 lbs. You're truck is just telling you it's pissed..

my thoughts

[the-last-international]

Light vibrations or is the truck surging?