I am having problems with my 86 bronco in town it does fine but when i get on the freeway and get it up to 70mph it slower down and i have to keep stomping on it to keep it at 70 and loosing power could anyone tell me what the problem may be?

 

The way you describe it, it is probably the nut that holds the wheel.

 

need more information.

what have you done to try and resolve the issue yourself? bet yourself a Haynes or chiltons manual and troubleshoot.

what engine, transmission, is the bronco stock or lifted?

lots of factors to eliminate here.

 

Its got a 351 in it i just got dont putting 33,12,5s on it but all the bolts are fine the trans im not sure of im wondering if there is some kinda of blockage somewhere cause i should not have to keep stepping on the gas peddle to keep it at 70 mph

 

did you have this issue before installing the 33" tires? what gear ratio is in the axles and what trans do you have?

tune up time perhaps? fuel pump failing?

 

Yes it was still acting up before i put the 33s on