00MustangGT1215

Yesterday the check engine light came on and started flashing and then would just stop flashing. The car ran like it was hesitating and had a loss of power. Today I took spark plugs out and all the plugs were blown on drivers side. I just replaced the 3 weeks ago. I then put fuel injector cleaner and octane boost in gas tank. The car runs 10 times better but light still flashes and in 3rd and 4th gear its starts hesitating. I'm thinking its any O2 sensor but not sure any ideas??

Nolimits31

That usually means a COP is bad, usually do to moisture causing it to misfire.

gunpig0313

Has a misfire change out the plugs and coil overs

ChalknCover

Yep, change em out. All COP's and plugs.

Donnie's GTS

wow, really? change out his aftermarket suspension (if he has it)?

Change your spark plugs and coil packs.

ct_white_stang

I wouldn't drive around like that either. I drove my Audi with a flashing check engine light and the COP caught on fire and melted, luckly I had just got home when it happened.

gunpig0313

You know what I meant. I guess I need to speak a little more clearly.

ChalknCover

Though it would be pretty funny if the OP had pics with the suspension apart going "now what?"

No offense OP, it just would be funny that's all.

gunpig0313

Yeah it would!!!