Mainesedge Posted September 16, 2019 Report Share Posted September 16, 2019 Having problems with the wife's 2010 edge limited AWD. It says p0355 coil "e" primary/ secondary malfunction. I first, changed just the coil on cylinder E (5) middle front, and it ran decent with no MIL. 1200 miles later, same code. Changed plug as well, no difference. Today, I just changed all coil packs and spark plugs, cleaned the throttle body and upper intake manifold thoroughly. Same code. I have a new PCM on the way (so they say) . I looked for vacuum leaks and couldn't see anything. Couldn't find loose connections either. Anyone have any other suggestions as to what to test and or try? Thanks in advance! Quote Link to comment Share on other sites More sharing options...
2FAST4U Posted September 16, 2019 Report Share Posted September 16, 2019 Sorry to say but if everything you tried still doesn't work, you should take in to a Ford dealer…not because I doubt about your abilities but rather because sometimes they have special dealer-only diagnostic tools to find more complicated problems... Good luck, Claude. 1 Quote Link to comment Share on other sites More sharing options...
Mainesedge Posted September 16, 2019 Author Report Share Posted September 16, 2019 Thanks lol. I am going to have to once the new PCM comes in to have it programmed to the keys. The scanner says that the temps are all out of wack. Has 0 misfiring just rough idle. Just seeing if there was anything problematic that they are known for that I am overlooking. The plugs I changed were original apparently, with 156,000 on them! Bad shape! Side note, I love vehicle forums! Saved me literally thousands! Quote Link to comment Share on other sites More sharing options...
onyxbfly Posted September 17, 2019 Report Share Posted September 17, 2019 12 hours ago, Mainesedge said: Thanks lol. I am going to have to once the new PCM comes in to have it programmed to the keys. The scanner says that the temps are all out of wack. Has 0 misfiring just rough idle. Just seeing if there was anything problematic that they are known for that I am overlooking. The plugs I changed were original apparently, with 156,000 on them! Bad shape! Side note, I love vehicle forums! Saved me literally thousands! Disconnect the battery for about 30 minutes or so. Connect the battery and let her idle for about 15-20 minutes. After that drive her around for a 10-20 miles not overly slow but not hard. I believe that she has to relearn the idle after changing the plugs, and cleaning the throttle body and intake manifold. Quote Link to comment Share on other sites More sharing options...
WWWPerfA_ZN0W Posted September 18, 2019 Report Share Posted September 18, 2019 Changing plugs coils and PCM must happen AT THE SAME TIME to not get into a vicious cycle of broken parts. If you are still using that old fried PCM, hopefully it will not damage the new parts you have put in, fingers crossed ... https://drive.google.com/open?id=1czHMWAr-qhOMt6BeNl7FG2vhIrH946ux 3 Quote Link to comment Share on other sites More sharing options...
Mainesedge Posted September 27, 2019 Author Report Share Posted September 27, 2019 Update I drove it 1 mile and decided not to go any further. New PCM came in and I hauled it via trailer to dealership to have it reprogrammed. It's runs great now! I'm happy to have under $500 into everything from the new PCM, new coils,plugs, and new intake manifold gaskets, and programming. Thank everyone for the help/ input 1 Quote Link to comment Share on other sites More sharing options...
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