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Here is a pic of the spark plugs I took out. Ugh. I checked the car again today when my wife got home - no codes! The single plug is about the best one.

Solved. When I changed the coil I crossed the wires for 1 and 5, so had constant misfire. Since i was originally chasing a misfire, I figured I just had not sorted it. Oddly, the codes for the fuel injector open circuit on cyl no. 2 went away - but i dont' know which of the things I did made...

I checked the electrical connectors all over - including disconnecting the battery and then cleaning up the corroded ground for the PCM module. Getting a code for P0300, but not P0202 or P0302 now after I cleared them earlier. Reading on the interwebs, I also see that it might be a Crank...

not getting very far. going to have to bite the bullet and start disassembling the top of the engine to check out the injectors. I dropped one of the old spark plugs while changing no. 3 and now I can't find it...think it's trapped between heat shield and manifold. Can't win. I cleared the...

OK - but it's still running rough and I haven't done anything about the P0202 injector code. Maybe try to have them cleaned or flushed before attempting replacement?

OK - update changed the plugs and wires and the drivers side heat shield - been meaning to do that anyway. Also changed the coil pack. you would not believe how ugly the old plugs were - should post a pic. Cant believe it was running as well as it has been with those completely rusty...

OK - it's a new day. I am going to find the bluetooth sender for the JScan and try to get the codes. I will change the plugs and wires no matter what. Will shout if i need help or advice and report back what I find.

2008 JK 3.8 2 door. my wife was headed home tonight from school - check engine light came on, running rough. checked oil - low about a quart. also topped up coolant. transmission oil level was full. I have a JScan and plan to check for codes in the morning. I also have plugs and wires...

the instructions in the JScan app say to measure from the ground to the top of a loaded tire.

yes, but that is the ACTUAL measurement on the jeep.

i thought you were suppposed to measure from the top of a loaded tire to the ground for exact tire size - not the unloaded spare.

I retrofitted a heated seat kit and put new switches on the center "dash" by drilling new holes for them.

Still more $$, but this one does not have Bluetooth as an option. Thanks for the comparison. i just realized I typed $399 above - it's $299 for the pedal commander. My bad - I'll fix it.

Here is a pic of the install and the setting I have it on:

But unnecessarily expensive is not good either. Best not to pay too little or too much. If this fails for some reason, I will buy another model from another vendor that does the same thing.

But unnecessarily expensive is not good either. Best not to pay too little or too much. If this fails for some reason, I will buy another model from another vendor that does the same thing. One more thing - this thing is tiny - smaller than a credit card and about as flat. The Pedal...

I just purchased this on Amazon and installed it: iKiKin Throttle Response Controller 9 Drive Modes Racing Accelerator Potent Booster Tuning Parts Accessory for Jeep Wrangler JK 2007-2017 807 https://www.amazon.com/dp/B07ZX71Y52/?tag=jkforum-20 This is a generic version of the "pedal...

doing another post on it now -- def a must buy item.

I told my wife about it, now I have to do it.

Great write up - thank you. I have this next on my "to do" list - already have the parts, but last time I thought about doing it I gave up once I saw how fun it was to get to everything. I have ham hands and fingers. Pulling hard on the plug boot for no. 2 - it did not want to budge either...