Engine noise - JeepForum.com

 
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post #1 of 10 Old 08-19-2014, 06:46 PM Thread Starter
odss91b
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Hey guys! Saturday I took the yj for a drive about an hour away to pick up a washer, dryer, and a stove ( on a trailer of course). It drove great there and on the way back drove great as well. However Sunday when I got in it to drive to church it made an awful clanging sound from what seemed like the bottom of the engine. Ten the check eengine light came on. Got it home checked the oil and it was a quart low. Filled it up last night. Drove it to work this morning same metal clanging noise and the check engine light was on. Got in it this evening to come home and the light didn't come on. But still have the metal clanging noise. Checked oil again and it was good. The noise only comes basically when I speed up and really only in first or second gear. I'm hoping I didn't destroy anything. I had to go over 2 mountains to go and 2more to come home. What can I check? The flash code said battery disconnect and speedo signal not received.

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post #2 of 10 Old 08-19-2014, 06:48 PM Thread Starter
odss91b
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[QUOTE="odss91b"] dang fat fingers hit send!
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post #3 of 10 Old 08-20-2014, 12:42 PM
mrmud4x4
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Change the engine oil using a clean container for the old oil. Pour that old oil slowly through a clean rag/towel looking for metal pieces and shavings. When you are done pouring that oil...inspect the original container bottom for metal pieces/shavings.

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post #4 of 10 Old 08-20-2014, 12:50 PM
mrmud4x4
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also....look all under the jeep for anything loose, missing bolts...etc...

clanging noise is hard to troubleshoot through a forum...lol

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post #5 of 10 Old 08-20-2014, 12:53 PM
mrmud4x4
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there is an anti rotation bushing that bolts to the skid plate on the drivers side....mounts to the tranny?

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post #6 of 10 Old 08-20-2014, 12:56 PM
mrmud4x4
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also...check your radiator fluid when cool....see if there is oil in it.

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post #7 of 10 Old 08-20-2014, 04:04 PM Thread Starter
odss91b
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Ok thanks ill be checking those things. Ill do the oil change this weekend.
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post #8 of 10 Old 08-30-2014, 07:12 AM Thread Starter
odss91b
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Changed oil and filter no metal in old, checked coolant no oil, no loose bolts underneath. After changing the oil the noise is only intermittent. But it sounds like metal on metal and only every now and then. Some times it's at takeoff other times its while in motion? And it's only one clank then a few seconds later another clank then maybe a third and goes away. Someone told me could be rear main seal? But it's not leaking from there.
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post #9 of 10 Old 08-30-2014, 11:26 AM
mike134
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I think the burned oil may be your red herring. It sounds like you put the jeep under a ton more stress than its used to by dragging all that trailer weight up the mountains. The first thing you should look for are holes blown into the exhaust, rattling cat, and especially a rattling heat shield. Tap the catalytic converter and catalytic converter heat shield with a screw driver to see if they make noise, and run your hands all over the COLD exhaust pipes from the engines all the way to tailpipe.

I'm guessing you just burn a bit of oil anyway, and burned an unusually large amount compared to normal under the high load.
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post #10 of 10 Old 08-30-2014, 12:47 PM Thread Starter
odss91b
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When I get home I will do that. That's what it founds like like the exhaust is dragging.
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