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  #1  
Old 06-15-2021 | 04:06 PM
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Default Rough Idle

What do you guys make of this? Only at idle, I'm worried it may be a walked cam bearing. I'm about 2,000 miles from home.
 
  #2  
Old 06-15-2021 | 04:25 PM
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We got a stroked LR! Any codes?
 
  #3  
Old 06-15-2021 | 04:26 PM
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Originally Posted by Best4x4
We got a stroked LR! Any codes?
Nope, dash is clear. I'm pretty scared I won't make it home either. Drives okay.
 
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Old 06-15-2021 | 04:30 PM
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Clean out your IAC valve ports and throttle body/plate with throttle cleaner and a tooth brush and rag.
 
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Old 06-15-2021 | 04:55 PM
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Kind of sounds maybe you're losing a bank of cylinders or have multiple cylinders not firing due to an ignition issue? If 4 of the 8 weren't firing (one of the plugs on the end of a coil / or 1 of your 2 coils is on the way out?) -- I think that would throw a code tho, but sometimes my D2 waits awhile to throw a code....

Any other video, maybe of when you come off idle of it smoothing out?






 
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  #6  
Old 06-15-2021 | 05:25 PM
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Originally Posted by nashvegas
Kind of sounds maybe you're losing a bank of cylinders or have multiple cylinders not firing due to an ignition issue? If 4 of the 8 weren't firing (one of the plugs on the end of a coil / or 1 of your 2 coils is on the way out?) -- I think that would throw a code tho, but sometimes my D2 waits awhile to throw a code....

Any other video, maybe of when you come off idle of it smoothing out?
Here you go:
 
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Old 06-15-2021 | 05:29 PM
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Could I still drive it home like that? I will mention my front diff seal failed and a lot of diff oil blew back and hit the bottom passenger cat and smoked, I topped it off until I got to my hotel then dropped the diff and resealed it. Any way the oil could've affected the O2 sensor? Oil was only on the bottom part of the cat nearest the front of the car so I doubt it
 
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Old 06-15-2021 | 05:30 PM
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Originally Posted by JUKE179r
Clean out your IAC valve ports and throttle body/plate with throttle cleaner and a tooth brush and rag.
Going to try that when it gets darker since I'm out West and it's hot!
 
  #9  
Old 06-15-2021 | 06:01 PM
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Just swapped the MAF with a spare and nothing, it ran really rough and dipped down to almost 500 rpms
 
  #10  
Old 06-15-2021 | 08:35 PM
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I'd get a cheap spark plug tester from an auto store or harbor freight and check all 8 cylinders for spark. I once had a CPS going out that caused an awful rough idle, but it eventually set a fault code. Only other time I've had an idle like that was a messed up Bosch Purge Control Valve, and a bad coil pack.
 



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