My husband did a tune up on my car yesterday and now it wont start it will turn over like it wants to start but it wont he said that its miss firing we have bought 3 new coil packs and still will not start he has also changed the wires and spark plugs back out to the old ones to see if maybe the problem was the new wires or spark plugs but still is miss firing what could the problem be?

Sounds like he switch or mix up the firing order. The plug wires need to fire in a certain order.
If the #1 wire is not on the right plug it won't start up it will just turn the motor.
You can go on line and look up the firing sequence or go to the library and you might fine in there.
If one is wrong than that means 2 or more are wrong.
Hope this helps you. Good luck.

Most likely, if the car was running without misfiring before the tune-up, the spark plug wires are "crossed up" and are in conflict with the proper firing order.

If the engine was misfiring before the tune-up; check for a sticking EGR valve, incorrect ignition timing, vacuum leaks, and low cylinder compression. Also check the injectors to see if they are operating, and if injectors were replaced--check that the new o-rings were the proper size. Leaking o-rings will cause a loss of compression and a misfire.

If your car is miss firing and your husband changed the coil packs,the wires leading from coil packs to sparkplugs must have got crossed.This will change car timing which will result in the car miss firing.He needs to go over wiring and correct problem for car to run right.You can go online to autozone.com and type in Info about car to get the correct wiring layout.Your problem isnt the new plugs n wires.Its the wiring layout.