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Diagnosis


Edge_Beast

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Recently on our '11 Edge Sport (93K miles) under WOT it begins to buck and CEL light blinks a few seconds. AC compressor comes off (can notice air from vents get warmer) while all this is going on. After a few seconds (10-20) CEL stops blinking doesnt shown on dash anymore and AC pops back on. Its a pain the butt on a highway when passing vehicles. Any suggestions? Nothing really has been done to it other than regular maintenance. Plugs? TB needs cleaning? Coil pack? Any help is appreciated. Thanks

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Flashing is an ignition misfire issue. Plugs suspected as you might be driving it in city mostly and the hours on the plugs are far and above 100K. Check codes for miss fires and if it is a steady miss then it may be a coil. Seems coils fail in #2 and #3 with #5 also popping up as a failure. Why I do not know. 2 and 3 because of heat most likely.

 

Verify both coils and plugs but at least change the plugs. Verify the front as good then if good before changing the plugs move them to the bank one and the bank one coils move to the bank two position. Easier to change if the #2 and #3 are failing.

 

I may recommend changing all of your fluids also if this has not been done. Especially the coolant.

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Flashing is an ignition misfire issue. Plugs suspected as you might be driving it in city mostly and the hours on the plugs are far and above 100K. Check codes for miss fires and if it is a steady miss then it may be a coil. Seems coils fail in #2 and #3 with #5 also popping up as a failure. Why I do not know. 2 and 3 because of heat most likely.

 

Verify both coils and plugs but at least change the plugs. Verify the front as good then if good before changing the plugs move them to the bank one and the bank one coils move to the bank two position. Easier to change if the #2 and #3 are failing.

 

I may recommend changing all of your fluids also if this has not been done. Especially the coolant.

Forgot to ask cylinder number should be as followed:

 

1 2 3

4 5 6

 

with the 123 closest to firewall is that correct? and 1 & 4 facing towards drive belt?

Edited by Edge_Beast
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  • 4 weeks later...

just went through this exact issue. Misifire on cylinder 3; coil pack had a crack in it.

4 Months later... misfire on 6, plug was pretty bad.

 

Moral of the story; with the amount of miles on your edge, it is time to change the plugs; sooner or later if you dont do all 6 now, you will be in the near future. For as cheap and easy of a DIY fix, might as well do it now.

 

I can say that it can be extremely harmful to drive it with continuous misfires, so get the issue rectified as soon as possible.

Edited by addisonm06
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