i have a 2013 f150 4x4 off road lariat with 350000 miles. I replaced the passenger side manafold after removing the turbo. all work went well had to drop the starter.I will say it is a rough job. When i started the truck it ran but had a miss. i pulled the codes and it was c and d ignition coils bad. also my ac compressor would not come on. i replaced the coils but still it was throwing the same codes. i replace the pulgs and still have a miss. the ac compressor will turn by hand. the ac mananfold said the low side has pressure on it and after further work it had pressure on hi and low side of ac system. all fuses i found under hood and at kick panel are good. still no ac.tomorrow i will look to see if the ground under the starter is getting connection, as i pray this is my issue. any help on this would be appriciated.