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Jjeepwarrior replied to the thread Mystery P0300 root cause?.*** solved*** The drive belt tensioner I replaced 4x months ago already failed and was causing belt slap or slip catch seneraio to...
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Jjeepwarrior replied to the thread Time to replace the PCM?.Don't use solider anything electrical that is subject to vibration as thats a stress point that can break because of stiffness, use...
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Jjeepwarrior replied to the thread Mystery P0300 root cause?.Replaced ASD relay early on in this adventure. Today I tested control from pcm to asd relay, that's good Checked that in fact there is...
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Jjeepwarrior replied to the thread No deceleration mode in overdrive?.Bump
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Jjeepwarrior replied to the thread Mystery P0300 root cause?.Bump...
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Jjeepwarrior replied to the thread Mystery P0300 root cause?.You mean keep replying to this post or make a new one?
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Jjeepwarrior replied to the thread Mystery P0300 root cause?.In the month I've been trying to fix the P0300 code, I also developed a long hot start issue. If car is warm and I turn off for 20...
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Jjeepwarrior replied to the thread Mystery P0300 root cause?.In the month I've been trying to fix the P0300 code, I also developed a long hot start issue. If car is warm and I turn off for 20...
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Jjeepwarrior replied to the thread Mystery P0300 root cause?.Yeah I'll just replace it as just about everything needs replacing on this car, I'm restoring the jeep apparently vs making car...
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Jjeepwarrior replied to the thread Mystery P0300 root cause?.So the engine would receive air not fuel air vapor and possibly misfire? Why wouldn't it misfire all the time then? Why only going...
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Jjeepwarrior replied to the thread Mystery P0300 root cause?.Hi, mine shows fine in scan tool live data and freeze frame and in recorded data
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Jjeepwarrior replied to the thread Mystery P0300 root cause?.Hi Pcv was replaced It's got electronic throttle body plate and feels tight no play in it, was cleaned also You mean evap canister? No...
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Jjeepwarrior replied to the thread Mystery P0300 root cause?.I know the module sometimes will set a dtc code, but sometimes they fail without a code, like a loose component inside or cold joint and...
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Jjeepwarrior replied to the thread Mystery P0300 root cause?.I'm going to hack the pcm and know it's hardware and firmware as soon as I get a chance to setup a breakout box and J box and whatever...
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Jjeepwarrior replied to the thread Mystery P0300 root cause?.It's stupid the factory service manual doesn't explain the pcm inner workings or give a logic tree so a person can know exactly what...
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![IMG 3817[1]](/data/xfmg/thumbnail/3/3267-d15500e6fbf5fbfa4959b4c33a7612e8.jpg?1623784620)
