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Old 09-21-2015, 03:49 PM
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Old 08-10-2015, 04:08 PM
  #50626  
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My engine makes a hell of a knocking racket. What's the effectiveness of replacement of the rod bearings? Already done flexplate, etc. It's a noise down in the motor, and it speeds up a bit before disappearing, possibly due to oil pressure? Otherwise I'm just running it till it blows.
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Old 08-10-2015, 04:21 PM
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Originally Posted by kgm
My engine makes a hell of a knocking racket. What's the effectiveness of replacement of the rod bearings? Already done flexplate, etc. It's a noise down in the motor, and it speeds up a bit before disappearing, possibly due to oil pressure? Otherwise I'm just running it till it blows.
If it's really that bad, it's probably not going to do you much good to spend the time & money to do the rod bearings if you're not going to do the cam bearings as well. I believe they are oiled by the pump first, so if the rod bearings are bad, the cam bearings most likely are also.
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Old 08-10-2015, 04:28 PM
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Originally Posted by kgm
My engine makes a hell of a knocking racket. What's the effectiveness of replacement of the rod bearings? Already done flexplate, etc. It's a noise down in the motor, and it speeds up a bit before disappearing, possibly due to oil pressure? Otherwise I'm just running it till it blows.

Probably piston slap.


RTD (Run To Destruction). Wait for the rod to come thru the crankcase, then it's motor time.
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Old 08-10-2015, 04:32 PM
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Originally Posted by CCKen
RTD (Run To Destruction). Wait for the rod to come thru the crankcase, then it's motor time.
Agree.
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Old 08-10-2015, 05:05 PM
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Originally Posted by CCKen
May be a Torque Converter issue.


While you're poking around pull the inspection cover from the bottom of the bell housing and see if it looks like something was scraping. Also check the bottom bell housing-to-engine block bolts for security. Uppers too, if you can see them.
I'll give those a check. Refresh my memory, its been a couple of years, when looking at the inspection hole, which way am I suppose to spin the TC to inspect the whole wheel. Clockwise or counter clockwise?
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Old 08-10-2015, 05:12 PM
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Can anyone remember what their fuel pump sounds like when the ignition key is turned to the "on" position only. Been so long since I paid any attention, I honestly can't remember...
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Old 08-10-2015, 05:39 PM
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Originally Posted by 4WD4EVER
Can anyone remember what their fuel pump sounds like when the ignition key is turned to the "on" position only. Been so long since I paid any attention, I honestly can't remember...
R u kidding?? Lolz.. U must b joking. I am so in tune with every little noise my rig makes I can hear the noise in my brain space right nows!
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Old 08-10-2015, 06:17 PM
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Kind of like when you were a kid and your dad was out of town. Your mom thought you were finally asleep then, "vrrmmmmmmmmm". You sneeze, then it shuts off in an instant.
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Old 08-10-2015, 06:26 PM
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Originally Posted by indeepwithajeep
Kind of like when you were a kid and your dad was out of town. Your mom thought you were finally asleep then, "vrrmmmmmmmmm". You sneeze, then it shuts off in an instant.
You had a interesting childhood.. Oh and dad was off visiting his side family..
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Old 08-10-2015, 06:37 PM
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Originally Posted by VTJeep
You had a interesting childhood.. Oh and dad was off visiting his side family..
Bad news, buddy...

They weren't the side family
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Old 08-10-2015, 07:22 PM
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Lmao
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Old 08-10-2015, 08:03 PM
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Originally Posted by CCKen
Probably piston slap.


RTD (Run To Destruction). Wait for the rod to come thru the crankcase, then it's motor time.
Yeah that's the other option. I have good oil pressure but just by the gauge. It hasn't gotten worse in 20k, it just is noisy.
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Old 08-10-2015, 10:09 PM
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Originally Posted by NewKindOfClown
Bad news, buddy...

They weren't the side family
Oh, no, I misspoke. His dad was visiting the side family.. My dad was the guy who torced a jeep a few years back.. You might remember reading about it..
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Old 08-10-2015, 11:10 PM
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Originally Posted by sycoglitch
I have a question maybe yall can help me. Been trying to track it down for a while but its occurrence only happens under load.

01 xj auto 4x4. When jeep goes from 3rd to 4th gear, I get this metallic rattling noise when about 2kish rpm. If I ease up on the accelerator, it goes away. It isn't always speed dependant. Usually shifts into 4th at 45 mph. In N and P no noise. Only under load. I've googled and what I've seen is this happening on manual transmission. No issues stated for aw4s.

Thanks in advance. Tried to be as descriptive as possible.
Flex plate bolts loose?
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Old 08-11-2015, 12:47 AM
  #50640  
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Just for information's sake, what does the vacuum canister do?

For a bit of background, I've got a bone basic 2wd 93 Cherokee that had to have several vacuum lines disconnected for the last two months or so. I heard a leak and reattached everything, but had no noticeable change.

I know the reservoir does something with cruise control and the heat. Is there anything else it actually does? Just curious...
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