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2012 Ram, 800 miles, Is this Rod Knock?

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Old 10-05-2012, 08:58 PM
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Default Stethoscope

Stethoscope works okay but the rubber hose trick works much better trick of the trade.

Originally Posted by mezerr
Chrysler Canada, and the dealer used a stethoscope and pinpointed the noise to one of the cylinders. But, they don't want to put up the money to rebuild, and they are saying knocking from the cylinders is normal.
 
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Old 10-05-2012, 09:05 PM
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I'm done fighting.. for now.

I have an active case open with CAMVAP (arbitration) , so I'll drive the truck for now, then get it fixed when CAMVAP orders a repair. It's a no brainer. I have 2 dealers saying it's an abnormal noise. Chrysler Canada is only delaying the inevitable.
 
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Old 10-06-2012, 10:52 AM
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Originally Posted by mezerr
I'm done fighting.. for now.

I have an active case open with CAMVAP (arbitration) , so I'll drive the truck for now, then get it fixed when CAMVAP orders a repair. It's a no brainer. I have 2 dealers saying it's an abnormal noise. Chrysler Canada is only delaying the inevitable.
Dammm STRAIGHT they`re avoiding the inevitable...!!!!!
Go get yourself a brick, put it on the gas pedal, start it up and walk away.
When you dont hear it scream anymore, remove the brick, call the dealer to come get it.

Dont stop fighting...!!! Thats what they want you to do...!!!
Be the biggest pain in their`s azz`s, they`ll finally give up and fix it.
 
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Old 10-08-2012, 10:35 AM
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Originally Posted by mezerr
Brand new Dodge Ram. 5.7L.

Ignore the valvetrain noise in this video, that's not what I'm concerned about. But listen to that low, knock.

It happens about 30 seconds after a cold startup, when it starts idling at 600rpm. Putting it in DRIVE the noise goes away, but back in Neutral, it's there again. After driving it, then back in park, the noise is gone.

I'll bring it to the dealer, but just wondering what you guys think.

http://www.youtube.com/watch?v=noN4_4D2hHA

http://www.youtube.com/watch?v=S2rhcmCjn0U

http://www.youtube.com/watch?v=0Vq3KoniVjw
Originally Posted by mezerr
So.. yours has a knocking sound as well on start up? Or do you just not hear the noise in the video?
Originally Posted by mezerr
Those who say it sounds normal, try and listen again, and tune-out the high valve train noise (ticking, normal I know) and try and listen for the deep, low, knocking sound.
Originally Posted by mezerr
I understand you can here valve train noise, etc. but this is a clear definite knock.

Question.., it goes to the dealer on Tuesday, if they determine it's a knock, and decide to pull engine apart to fix, is that acceptable? Now I have a brand new ram, with a rebuilt hemi. I don't want a rebuilt engine in a brand new truck.
Originally Posted by mezerr
Dropped it off at the dealer. Left for work. They called end of day saying they didn't hear anything. Came back the next morning and started it for them, it was knocking. Dealer said "Oh ya, we heard that yesterday, because the clearances in the engine are so large, I think it's the piston moving around causing that noise, probably normal". Ok, lets go startup another Dodge Ram, We did, and it didn't make the noise (it sort've made the noise, but it was VERY VERY faint). Service manager said he would contact engineering and ask them what they think. He says engineering will probably tell me to wait till 5000km's before fixing anything.

He says this is common, it's called Hemi Knock. I said.. umm, I've heard of Hemi Tick before, and I know that's common, but havn't heard of Hemi Knock before. He said replacing the heads will fix it. I don't think so, this is a lower end knock.

So, waiting to hear back from Dealer on next steps.
Originally Posted by mezerr
Ya, I agree also, that's what I'll do.
Originally Posted by mezerr
Here's the response from Chrysler Engineering.

These engines all have a low amplitude noise when listening through the wheels wells. It is possible that it is just characteristic. Purge solenoid or injector firing is amplified. Compare it to other like vehicles and is somewhat the same then no repairs are necessary.

Here's another videos:

http://www.youtube.com/watch?v=noN4_4D2hHA

http://www.youtube.com/watch?v=S2rhcmCjn0U
Originally Posted by mezerr
Chrysler Canada called, and said that it's normal for Hemi's to knock. He said there is no fix for it. This is Chrysler's stance, and NO repairs will be done.

I asked what was causing the knock, and said Chrysler doesn't know exactly. Some do, and some don't he said.

He said this engine noise will not harm the engine. How do they know if they don't know what the problem is?

2 years down the road, if the problem still parsists, how am I ever going to sell this vehicle? Nobody will buy the truck when they hear the knock. He says just explain to them that it's normal. Riiiiiiight..

This is 100% unacceptable.
Originally Posted by mezerr
So, I'm not 100% sure what your saying? You can't perform service because the dealer says there's no problem?

Confuses me, because the dealer is saying they can't do anything, because Chrysler Canada tells them not to, because it's a normal condition.

A engine knock, should never be a normal condition.
Originally Posted by mezerr
I just got off the phone with Chrysler Canada again. I explained that the truck hasn't even been in the shop. The service manager listened to it for 10 seconds, then called engineering, and now Chrysler Canada is saying it's normal.

How do they know it's normal, when it hasn't even been looked over. Nobody has even inspected the oil. Nobody has put a stethescope to it, to see where it's coming from. Nobody has even looked to see if it's exhaust bolt related.

This is the worst customer service I've EVER experienced.

This must be a common problem, for them to conclude it's normal without even really listening to it.
Originally Posted by mezerr
I didn't pay 30+ for a truck that knocks. Sorry. Unacceptable. Whether it's causing a problem or not, it knocks, and it's embarrassing. All my friends have commented on it at work, without me saying anything.

Also, what if I decide to sell it in 2 years, who would buy a truck that knocks? I'm stuck with it.
Originally Posted by mezerr
http://www.youtube.com/watch?v=_reImUvq0ic

It now knocks even after being warmed up.
Originally Posted by mezerr
Deleted
Originally Posted by mezerr
Seriously? You hear the low frequency knock right? Ignore the ticking engine /valve train noise...
Originally Posted by mezerr
Second dealer said knock was abnormal. They have contacted Chrysler Canada, and are investigating.
Originally Posted by mezerr
UPDATE: Chrysler Canada just called, and after talking with Customer Service, Engineering, and the original dealership, they have decided to send the truck back to the original dealership where the truck was bought, and have the engine tech start investigating the origin of the sound. They have a loaner truck ready for me to use while truck is in the shop.

Chrysler Canada, and the original dealership now both realize this is a problem sound, and are now eager to help get it fixed. They are trying to make things right, which is great!
Originally Posted by mezerr
I hear ya. It was decided by Chrysler Canada for the truck to be sent back there. The original dealership now realizes that they didn't properly and thoroughly check the truck properly from the beginning, and just assumed this was the standard "Hemi Tick / Knock". I'm willing to give them another chance to inspect the truck throughly. I think everyone is now onboard that this is an abnormal knock.
Originally Posted by mezerr
Oh, and one more thing. Second dealership was able to get the noise to go away by disconnecting the cylinder #1 coil pack. They obviously then reconnected it. So, looks like they have pinpointed it down to #1 cylinder.

So, that leads me to my next question. If it's a problem with bearings, or cylinders / pistons, would they try to rebuild? (new pistons, bearings, etc), or just replace with a new short block? Thoughts?

And, is it acceptable for a brand new truck to have a rebuilt engine? Thinking that a factory fresh engine is far superior then one rebuilt on the shop floor?
Originally Posted by mezerr
No dice. Chrysler Canada has said that after talking with the engineers, and Dale Wurfel, the noise couldn't be located. The noise has again deemed to be normal in the Hemi. Case closed again. No further repairs are going to be authorized. I mentioned that Oxford Dodge says the problem is abnormal, and Chrysler Canada said they don't believe that to be the case. All trucks have this knock, and it's normal. I pleaded, and pleaded with the resolution manager at Chrysler Canada, and no dice. He wouldn't budge. No further repairs.
Originally Posted by mezerr
My truck knocks ALL of the time. Not just on cold start any longer. It's gotten progressively worse.

And I checked ALL rams on the lot, none of them knock. Tick yes. Knock no.
Originally Posted by mezerr
Chrysler Canada, and the dealer used a stethoscope and pinpointed the noise to one of the cylinders. But, they don't want to put up the money to rebuild, and they are saying knocking from the cylinders is normal.
Originally Posted by mezerr
I'm done fighting.. for now.

I have an active case open with CAMVAP (arbitration) , so I'll drive the truck for now, then get it fixed when CAMVAP orders a repair. It's a no brainer. I have 2 dealers saying it's an abnormal noise. Chrysler Canada is only delaying the inevitable.

My 2008 5.7L has had a "knock" since 400miles. It's def louder than the usual tick, but once the rpms get brought up to 1,000rpms, the noise goes away. It's because of the low pressure oil pumps used. They only produce 4-6psi at idle.
Bring your rpms up to 1k and it'll go away.
At any rate, mine is a very loud hollow thump noise and sounds just like a rod knock. It's this loud because of aluminum engine parts that echo the noise. It's valve noise and I'm not worried.
 

Last edited by dirtydog; 10-10-2012 at 10:42 AM.



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