Let me start by saying my car was in a really bad front end accident in december. I hit a semi tirew/ rim on the freeway going about 85 mph. Destroyed most of the front and lefting my car about three feet in the air. almost rolled! Luckly I only broke my finger.

Now When I drive on the freeway the car swerves back and forth,(happens randomly). Also when I change lanes and my right wheels hit the reflectors the car jerks to the right. Never happened before the wreck and also happens at random. I only have stock wheels no preformance wheels/rims. The auto body shop said they inspected and test drove after the repairs and found nothing wrong. My alinement is good but does slightly lean to the right also. That is very mild.

Any ideas on whats going on! Also when I'm at speeds of 55-65 mph the cab is extremly loud and gets quite at 70-80mph, then gets loud again past 85mph.

 

It sounds like whoever checked your alignment missed something. I would get a 2nd opinion. If your car " swerves back and forth,(happens randomly)... change lanes and my right wheels hit the reflectors the car jerks to the right" you have some problems. Maybe a bent control arm, tierods, bent or bad wheel/tire..something is off..

 

One of the problems with unibody cars is when you get into a wreck like that it twists the whole frame around; think of building a bunch of connected cubes with toothpicks and rubber cement then smashing it around; one corner pulls the others out of round.

I had a buddy who bought a car from a dealership, the dealership handed him paperwork "this car has never been in an accident". T'was a unibody, whole frame was twisted around in an accident. Transmission went under the warranty period; he took it in for a replacement and they wanted $6k to replace as it had been in an accident and the bolt holes were a full inch off. He pulled a carfax report and found out he had been lied to; dealership said "so what?". He sued, and won.

When the body shop repairs a unibody; usually by finding a junkyard one, sawing the car in half and welding it back together then replacing the applicable components that need it; you end up with alignment issues that will only show up months or years later. This also does not take into account problems such as disturbed gaskets and off-round bearings; my mom hit one of those concrete parking stops at an angle just right that it snapped the trans axle to engine gasket and it needed replacing as one example. Typically insurance companies will find a chop shop, pay them to make it look brand new, then say "lookie, brand new! our part is done!" and anything after that they will fight tooth and nail and say "it's your problem buddy" via "we don't provide any warranty"; bull biscuits, you owe me a remedy and your remedy is to screw me.

Take the car into a tire shop and have them check alignment; if something is off or wrong, they will tell you since they're trying to align the thing. If they find nothing wrong and the problem persists, take it to a dealership and have them align it and if it continues then, go for a ride with a mechanic. Tell them the car was in an accident and to do you a favor and check if the frame is out of round. If it is out of round, talk with the insurance agent and show them the paperwork; if they still won't budge, small claims. Just the cost of a lawyer alone will get them to settle.