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    2012 Jeep Wrangler JKU starting issues

    Not the keys, have two new and factory original key. No difference.
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    2012 Jeep Wrangler JKU starting issues

    Already done!! My next idea is to add an additional ground wire tomorrow. I have come up with all kinds of solutions. Transmission neutral safety switch. Transmission overheating, it’s not those , done the testing. I’m stumped!!! Oh, I also had the clock spring replaced by the dealer. So it’s...
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    2012 Jeep Wrangler JKU starting issues

    Ok, I have been helped before on here so I’ll try again. My 12 wrangler has a very strange problem. First some background is in order. Purchased used, have done so far engine wiring harness from mopar, plugs, injectors, catalytic converters, o2 sensors, shocks, rear main seal, torque converter...
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    2012 Wrangler JKU issues

    Total price for the rear main, upper oil pan , torque converter seals, cleaning it all up, oil change and a few small issues. Just under $1,500.
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    2012 Wrangler JKU issues

    Ok, time for an update. I took the jeep to a specialist (Jeep). I had a leaking rear main seal. They pulled the transmission, transfer case, etc. found out that the torque converter seal had been replaced with the wrong part. So a leak there as well. Replaced the seals. No more leaking there...
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    2012 Wrangler JKU issues

    No issues with corrosion. Battery cables are new , connectors are new. Pulled off and on many times doing work on the jeep. It’s an 2012 and I’m trying to do all the things to get ahead of them breaking. Just this week I had to replace the dreaded blend door because it started clicking. That...
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    2012 Wrangler JKU issues

    Ok , got it. Thanks.
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    2012 Wrangler JKU issues

    Ok, I ordered some. Do install on just the front, the back, or all 4(front and back). New product for me. Thanks.
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    2012 Wrangler JKU issues

    Interesting, I didn’t know this existed, I do have p0430 codes for cat 1 and cat2. These seem inexpensive enough to try. Less expensive than a new computer. Thanks.
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    2012 Wrangler JKU issues

    Not sure what o2 coolers are. I replaced with Bosch o2 sensors. All 4. Could the o2 spacer(spark plug sleeve) possibly help with the o2 reading? We have no emissions testing here in Florida. No smoke of any kind coming out of tailpipe. No heavy or oily residue on tail pipe end. Only the...
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    2012 Wrangler JKU issues

    Just looked at the emissions hoses, looks good. Battery clamps are looking new, no corrosion of any kind. Look new, probably replaced before I got it.
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    2012 Wrangler JKU issues

    Ok, I reset , disconnected the battery for 12 hours. Reconnected and started . No cel, drove for about 30 minutes. Stoped, did some work on the rv. Started the jeep , the cel is back. Same readings as before. Jeep runs great. I’m at a total loss. A gentleman at the rv storage lot has a...
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    2012 Wrangler JKU issues

    Got it, thanks.
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    2012 Wrangler JKU issues

    Can you tell me who that is?
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    2012 Wrangler JKU issues

    I’m trying one tonight. Disconnected battery. Will re attach cables tomorrow. I did the brief disconnect and reattached. Cel went out for a short time and came back on.
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    2012 Wrangler JKU issues

    Big question is could the computer have been messed up because of the rodent damaged engine wiring harness.
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    2012 Wrangler JKU issues

    After market cats, cat airflow restrictions, however JScan shows no issue with performance. These are the same codes I had before I replaced them. They show as permanent and historical.
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    2012 Wrangler JKU issues

    Ok, here’s a good one. Bought the jku to tow behind rv. It runs great, good mileage, has 213 k miles, all stock, no hop ups. All the issues started with an oil change at a quickie place. They used the wrong oil filter. Started throwing all kinds of codes. Replaced with the correct oil...