pba1817 Posted March 15 Report Share Posted March 15 2012 Dodge Journey 3.6L SXT Anyone diagnose this noise? It is heard at low end throttle with rpm between 800-1200, also repeatable when engaging power steering(turning steering wheel), as well as when the A/C is turned on(this is what is heard in the video). https://streamable.com/j3ygdv Quote Link to comment Share on other sites More sharing options...
5rebel9 Posted March 15 Report Share Posted March 15 9 minutes ago, pba1817 said: 2012 Dodge Journey 3.6L SXT Anyone diagnose this noise? It is heard at low end throttle with rpm between 800-1200, also repeatable when engaging power steering(turning steering wheel), as well as when the A/C is turned on(this is what is heard in the video). https://streamable.com/j3ygdv NOPE. Can't DIAGNOSE it, but can give an educated GUESS for you....... From the noise change on A/C engagement, I'd be looking into the A/C compressor clutch pulley or the compressor itself. Good Luck and keep us posted. pba1817 and 2late4u 1 1 Quote Link to comment Share on other sites More sharing options...
pba1817 Posted March 15 Author Report Share Posted March 15 This is also heard when AC is not on. Heard alone; with low throttle engagement, or when turning steering wheel with no throttle, or when turning on A/C with no throttle. Quote Link to comment Share on other sites More sharing options...
Dean H Posted March 16 Report Share Posted March 16 (edited) I would check everything that is run by the serpentine belt. Check all your engine fluid levels. Need a second opinion on this thought: Could you run the engine for a few minutes without the serpentine belt on it? To see if you hear the noise then. Only when the engine is cold, you do not want to overheat the engine. Edited March 16 by Dean H pba1817 1 Quote Link to comment Share on other sites More sharing options...
5rebel9 Posted March 16 Report Share Posted March 16 Yes, good points to check posted by member Dean H. BUT if all that checks out OK, you will want to move further acroos the motor and check for a cracked/breaking flex plate{flywheel}. I had this happen on my '14 and a few others here have posted of same situation. Depending on how bad the crack is determines just how bad the noise it will make is. NOT an easy item to diagnose from sound alone and requires a good "visual" inspection from underneath the car here the trans. bolts up to the engine. pba1817 1 Quote Link to comment Share on other sites More sharing options...
pba1817 Posted March 16 Author Report Share Posted March 16 Thanks guys, pulling it apart on Tuesday and will report back Quote Link to comment Share on other sites More sharing options...
pba1817 Posted Wednesday at 02:38 AM Author Report Share Posted Wednesday at 02:38 AM Replaced idle pulley, replaced tensioner assembly, replaced serpentine belt. Noise still exists, most noticeable when turning on AC. AC blows cold, so maybe AC clutch? Quote Link to comment Share on other sites More sharing options...
5rebel9 Posted Wednesday at 11:11 AM Report Share Posted Wednesday at 11:11 AM OK, due to the year of vehicle, you probably did NOT "waste" money replacing those parts. BUT I would get the front end up in the air and go underneath and check for a cracked flex plate/ flywheel. This is a visual inspection with engine off and rotating the crankshaft with socket and ratchet from the pulley bolt on the pass. end. There may be a small inspection plate to remove from the trans. bell housing to see the flex plate and also should be numerous youtube videos about the flex plate to give you some guidance about the situation. ALL auto trans 3.6 Dodge/ Chryslers would be the same design and procedures{ DJ. Caravan, Town&Country. As I said before, locating by sound to particular area is rather difficult for pinpointing the source IF the flexplate is cracked. and you say that the A/C seems to work fine. NO MORE parts chucking, do a good visual inspection. 2late4u 1 Quote Link to comment Share on other sites More sharing options...
5rebel9 Posted Wednesday at 01:50 PM Report Share Posted Wednesday at 01:50 PM The next step, and I did not post before due to parts and MUCH LABOR would be to check for bad rocker arm/wiped out camshaft lobe. This is labor intensive, as upper manifold and valve covers need to be removed and visually inspected.Again, there are many youtube videos to help you along about the subject. A/C compressor or clt0utch is EXPENSIVE, so do your best to LOCATE the source of noise BEFORE spending more $$$ changing parts. 2late4u 1 Quote Link to comment Share on other sites More sharing options...
Dean H Posted Wednesday at 07:27 PM Report Share Posted Wednesday at 07:27 PM (edited) If you haven't run the engine with out the serpentine belt on the engine. Since your repairs. I would run the engine until the noise is occuring. With the belt on. Remove the belt and run it a few minutes. Under the same load. To eliminate any possibility of the AC clutch or water pump pulley. Being your problem. Edited Wednesday at 07:28 PM by Dean H Quote Link to comment Share on other sites More sharing options...
pba1817 Posted Wednesday at 08:42 PM Author Report Share Posted Wednesday at 08:42 PM (edited) I pulled serpentine belt off, started engine ran it briefly and the noise is still heard without any serpentine components engaged. I assume that points to flex plate as you have previously indicated? I am getting beyond my level of comfort in the repairs so I am taking it to my mechanic on Monday. 9 hours ago, 5rebel9 said: OK, due to the year of vehicle, you probably did NOT "waste" money replacing those parts. BUT I would get the front end up in the air and go underneath and check for a cracked flex plate/ flywheel. This is a visual inspection with engine off and rotating the crankshaft with socket and ratchet from the pulley bolt on the pass. end. There may be a small inspection plate to remove from the trans. bell housing to see the flex plate and also should be numerous youtube videos about the flex plate to give you some guidance about the situation. ALL auto trans 3.6 Dodge/ Chryslers would be the same design and procedures{ DJ. Caravan, Town&Country. As I said before, locating by sound to particular area is rather difficult for pinpointing the source IF the flexplate is cracked. and you say that the A/C seems to work fine. NO MORE parts chucking, do a good visual inspection. Edited Wednesday at 08:49 PM by pba1817 Quote Link to comment Share on other sites More sharing options...
5rebel9 Posted Wednesday at 08:51 PM Report Share Posted Wednesday at 08:51 PM YES, NOW is the time to do the VISUAL INSPECTION for a cracked flexplate. It is the LEAST COSTLY thing to pinpoint the source of noise to be able to EFFECTIVELY fix the noise problem as I posted of. pba1817 1 Quote Link to comment Share on other sites More sharing options...
5rebel9 Posted Wednesday at 09:07 PM Report Share Posted Wednesday at 09:07 PM 20 minutes ago, pba1817 said: I pulled serpentine belt off, started engine ran it briefly and the noise is still heard without any serpentine components engaged. I assume that points to flex plate as you have previously indicated? I am getting beyond my level of comfort in the repairs so I am taking it to my mechanic on Monday. YES, if not sure of your abilities that is the right thing to do. It would be a good move to offer the info of checking the flex plate first and then broach the possibility of bad rocker arm/camshaft. IF either of those are the culprit, be prepared for a rather costly {@ $1500.}repair GOOD LUCK and PLEASE keep us informed. pba1817 1 Quote Link to comment Share on other sites More sharing options...
pba1817 Posted Wednesday at 09:07 PM Author Report Share Posted Wednesday at 09:07 PM 16 minutes ago, 5rebel9 said: YES, NOW is the time to do the VISUAL INSPECTION for a cracked flexplate. It is the LEAST COSTLY thing to pinpoint the source of noise to be able to EFFECTIVELY fix the noise problem as I posted of. thank you for the help. Quote Link to comment Share on other sites More sharing options...
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