08 JK engine miss ,baffling.
08 JK, original owner 125K miles or close to it, Started out as a slight "bump" when idling, then went to a miss after warming up then backfired driving on freeway. After all of this it would not thro...
Forum Discussion
j-d wrote:
Does it sit there and miss at idle, when you can dink with it, like unplugging the injector connector and seeing if that makes a change? I wish we could narrow between Ignition and Fuel before going all out on Ignition.
I don't have any of these, but you can get a "Noid Light" that plugs where an Injector connects. Doesn't tell you injector efficiency, but at least confirms the PCM is pulsing the injector.
Comfort amid Frustration: Coil is probably less expensive than a diagnostic hour at a shop.
It'll be a little while but I'll start a thread in automotive to see if anybody has a tip.
Great ideas. I registered on that site you mentioned in the PM. I am going to tinker around with it again and start from basics to be sure I am not missing something obvious. That coil though, could it break down or fail after getting hot. What is it that is getting hot then failing.
I owned a 1985 "birthday bird" Thunderbird that ran when it felt like it and stopped when it felt like it regardless of where you happened to be. Many years later Ford fessed up and said a module in the ignition system would shut off the fuel pump once it got hot, not always but sometimes. You never know.
