I received a tune up and now my car runs badly, already checked the firing order

Click on this link for the 2.3 engine firing order.https://www.autozone.com/repairinfo/specifications/specificationsMain.jsp?childCatName=Firing+Order+/+Cylinder+Location&childCatId=26200242&categoryNValue=26299999&categoryNameForTitle=Ignition+and+Tune+Up&categoryName=IGNITION+AND+TUNE+UP&childCategoryNameForTitle=Firing+Order+/+Cylinder+Location Click on this link for the 3.0 engine firing order.https://www.autozone.com/repairinfo/specifications/specificationsMain.jsp?childCatName=Firing+Order+/+Cylinder+Location&childCatId=26200242&categoryNValue=26299999&categoryNameForTitle=Ignition+and+Tune+Up&categoryName=IGNITION+AND+TUNE+UP&childCategoryNameForTitle=Firing+Order+/+Cylinder+Location

if nothing has been done ( tune up, plugs HT leads etc) run the fault codes
check for problem wires to cam and crank position sensors
if a tune up was done check for correct firing order for the plug leads

Are plug wires connected in the right firing order to the plugs? Also are the spark plugs gap correct? Was vehicle running rough before tune up or only after?

if you already did a tune up, make sure you have the correct firing order. Ford made 2 different 5.0 one was for the mustang another for the truck. the mustang 5.0 firing order started 1,3,7,2,6,5,4,8 the truck firing order if I can recall correctly started 1,5,4,2,6,3,7,8. also might want to check or replace fuel pump.

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.

most likely cause spark plug wire bad, or you got them incorect when you did a tune up if it happened before tune up. swap the wires but keep the fire order the same . if the wires are good then the # 4 should still be the problem . put them back the way they were now you have ruled out the wires next check the fuel injetion system check for a vacum leak around the # 4 injector listen with a lenght of hose . listen to the injectors they should all be making a clicking noise.cant help you more then that. make and model would help the next expert wiz or guru

check your plug wires again and check the cap and rotor sounds like either a bad cap and rotor or a couple wires backwards

i would suggest calling the police at this point .

check the firing spec for the vehicle and make sure you spark plug wiring is in the right order

I have the same truck I've been looking for information on a different subject. I am an ASE technician I may know what might be causing your problem. First off the white wire on the coil that goes to nothing is your test wire it's not going to be hooked up unless you are performing a test to ensure that the coil is working. Just changing parts often times does not solve the problem and it can become very expensive and make things worst for the next guy to fix. it's going to be in one of two systems Fuel or Ignition since you just did things to the ignition system I'd start looking there check the firing order needs to know what engine you have before I can give you the firing order. is this a V6? V8 5.7? what all did you replace during your tune up? it could be that one of the plugs are not gaped correctly or tightened down which could cause damage to the head requiring the valves to ground to correct the problem. Your catalytic converter may also be causing the problem one the et hot and melt they start blocking the flow of exhaust. If you would like to read more on that check out this site it has some very good information. http://www.aa1car.com/library/converter.htm