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When I go 50 mph with my dodge intrepid it shakes bad.What is wrong?

Believe it or not 50mph is the magic number for saying your wheel are unbalance. This is straight from the Porsche Head foreman. Go to a shop and have your wheels balanced.

Your front end is out of alignment

its either cold or you're driving past something that scares the sh it otta your car

Take your car in and have them check to be sure your wheels are aligned. If they're aligned, have them check your tires to be sure you do not have any bubbles that may be weak spots that could because the tires to blow or the tread to peel off.

Or, you could just be driving 50 mph on a bumpy road.

Or your tires could need balanced or you broke the belt in a tire.

Maybe your car needs an alignment or maybe your tires have to be rotated.

aligment may be one wheels not balance another or tire last on occasion you are tires

It may be a few of things. Start cheap and work your way to costly.

1 Begin with having your tires rotated and balanced then ask the mechanic about the form of your tires. If your tires wore uneven having them balanced may not fix the problem but by having them balanced the mechanic can tell you about the wear and be able to tell you if the shaking is coming from the tires being out of balance then wearing incorrectly. If this is the case then you may need new tires or just live with the shimmy. Balance should cost between $20 to $30 on occasion businesses throw in a balance and rotate with a oil change as a special call around .

2 Go to alignment from here if it is not your tires. Alignment has a tendency to influence everything despite of speed though it'll be more obvious at higher speeds. An alignment may run anywhere between $50 to $80 based on the place and if or not they're running specials. Some places will give you a free alignment check ask for it.

3 If it is not tires and your car is aligned then it is most likely bad news. It may be anything from engine shaking caused by lots of possibilities, lack of oxygen, fuel pump, broken brackets, bad timing, etc. to problems with the transmission and the axles.

I could start with having your tires checked. My dodge doed the same thing and it was my tires so hopefully you will get lucky.

If your steering feels loose at any point either your inner tie rod bushing or your outer tie rod ends are shot. If your steering still feels good it wont totally rule out the earlier mentioned parts but could point towards an inner cv shaft on its way out.

Dont keep driving it like that, if something breaks you could lose controll. Take it to a shop and have it looked at.

It may be some things:

Needs four wheel alignment
Tires have to re balanced and rotated
Tires may have broken belts or bubbles