My car stop while I was driving one day about 2 weeks ago. It did start back up a few seconds later, but was driving like something was really bad wrong. It was shaking and skipping. I got the codes that all of my Coils were bad. I did have it put on a computer and the man told me that it was only one bad. I then was told I needed 2 changed. I had two changed, then had 2 more changed. However my car is still driving like it is going to cut off and skips. It is still shaking as well. I was told by someone that fix cars for a living that it was the PCM. I order the PCM and it has not came in yet, but I took it to the parts store and the codes came back this time P0351 and P0354 and the guy told me that I need 2 more coils. I feel like I am getting the run around, because I am a female. I cannot drive my car too many places, but I am scared it will cut off. I also hate the fact that it shakes very bad. Can someone help this female. I have not replaces the other 2 coils yet, because I feel like I am getting the run around. I did replace all 6 Spark Plugs.

 

Which year is your vehicle?

P0351 P0352 P0353 P0354 P0355 P0356 | Ricks Free Auto Repair Advice Ricks Free Auto Repair Advice | Automotive Repair Tips and How-To

 

Wow that article is a great find. Don't know how relevant it is. It is worth calling the people that installed your plugs as they will have a record of it. On my Mazda they originally have NGK plugs. I'm not sure but hoping Mazda put on different plugs. My Mazda is a 2006 3.0 ltr engine made by Ford. I have changed all plugs to upgraded NGK iridiums with double the ign coil output.
I also never listen to the radio! 1600 songs on my USB! Commercial free! No talking!

 

Lincoln LS's had radio interference too.

This does not mean you have to have the radio on to get the trouble. Spark plugs produce radio frequencies that need to be suppressed or isolated. If they are not controlled they will interfere with the radio and produce RPM related noise. That used to be all that happened.....until somebody stuck an electronic ignition module and a bunch of COP's under the hood.
Even my moped in the 70's had a metallic shield over the spark plug connector to control RF interference. Otherwide you would go by a house and their TV picture got snowy.