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I was told not to worry about it. New timing chain kit (both tensioners, all three chains, guides, sprockets) noticed this noise for awhile now. Goes away after 2000rpm
http://youtu.be/BNDJw9Val-Q
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Sounds a bit like something loose is rattling at that particular RPM.
What year/model is the vehicle? I saw it’s a Jeep but can’t tell much more from the video.Can you tell where the noise comes from? Up in the engine bay or further back from under the floor, etc?
Does the noise change under load vs revving in neutral?
Does the noise change when the engine is cold? hot? while it’s warming up?
Thanks bud for the quick reply. Doesnt change under load or neutral. It is a 2002 jeep liberty 3.7l v6 sohc. Runs strong. No noise at idle or below 2000rpm or over 2000rpm. Sounds like its coming from the engine bay.
Oh by the way, fresh oil change full synthetic valvoline
It does sound engine related, and since there was recently work done there the first thing I would do is check over that work. There’s more information on how to find noises in this article I wrote.
http://www.ericthecarguy.com/faq/diagnosing-noises-in-your-car
I’m hoping that information can help you find the noises source. Keep us posted.
The sound was there before the work was done also, it overheated for less than a minute and I shut it off because the heater hose broke then I started to hear the noise. Doesn’t overheat
I took it to a known mechanic and he said slightly worn bearing. He told me NOT to worry about it for this simple reason…
Let me get the WHOLE story straight.
My Jeep is in near mint condition. I bought it Early April. My second car after a hit and run. One day I was driving to work and got off the freeway. I noticed some steam coming out of the hood. I pulled in my work parking lot, clocked in and went back outside to make sure the thing wouldn’t explode. My problem was a heater hose. Chrysler decided it would be nice to do compressed fitted hoses to the heater-core to the block. I needed a new hose and it was 130$ from the dealer. So for the meantime, we ran a temporary hose with an adapter for the hose to the engine block as its slightly bigger. A week went by and the hose slipped off of the adapter while I was driving my girlfriend home and my luck it was almost 3am.I got to her house and stayed four about two hours with the hood open to let it cool down before adding coolant. I added coolant around 5am and it seemed a bit low but thought i could make it home. Half way on the freeway i noticed the temp guage creeped up over half way. Pulled over for a sec, called my grandpa for his advice and kept driving. Car overheated with the “ding ding ding” shut it off immediately. Pulled it into a parking lot and called my mother to come get me to get some coolant. Put it in and everything was fine. No overheating, no misfiring, no hard starts, etc. As I mentioned in an earlier thread, I had a timing job done on it. Once that job was done the new hoses were also put on. The noise has been there before the timing job was done. Sorry if this was long, jsut clearing everything up.
I may do a “lets take a ride” video in the morning. I work at 745am so it may be up around 730. If i dont leave early i will have it up around 5pm
Those engines are a little weak to begin with and with the timing components failing and overheating issues it’s really not a surprise that a rod is noisy.
It could have ingested minute particles from the timing components failing and damaged a bearing surface slightly.
As I and others recommended I wouldn’t be too worried about it unless it gets worse.
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