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While driving engine made a weird sound?

Tiny
JR PAYNE
  • MEMBER
  • 2010 DODGE CHARGER
  • 2.7L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 167,000 MILES
While driving down the road around 35 MPH vehicle made a noise as if someone took the shifter and slammed it back into park. Sorta like stripping gears sound it started bucking and shutting off. Limped it hone and found codes for timing correlation and cam sensor and crank sensor malfunctioning. Replaced both and while doing the relearn with my Snap-On Soleus scanner engine made another weird stripping gear sound and shut off. It would crank but sounded like low compression which I verified. Low compression now. I also inspected the driver side timing chain and found the nylon chain tensioner had broken in half. Is it possible to just replace the broken adjuster and reset the timing?
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Monday, July 3rd, 2023 AT 12:42 AM

5 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,924 POSTS
Yes, the 2.7-liter engine in the 2010 Dodge Charger is an interference engine. An interference engine is one in which the pistons and valves occupy the same space within the combustion chamber but at different times. If the timing belt or chain were to fail or jump timing in an interference engine, the pistons and valves can collide, potentially causing severe engine damage. So, if the timing chain has let go and now the engine does not have compression there is a change the valves got bent as well. Here is how to change the timing chain out in case you want to give it a try. Check out the images (below). Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.
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Monday, July 3rd, 2023 AT 4:56 PM
Tiny
JR PAYNE
  • MEMBER
  • 45 POSTS
Thanks for the fast reply, I appreciate it. One other question for you, should I consider removing the heads off of that engine as well and have them taken down to machine shop and have them tested.
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Monday, July 3rd, 2023 AT 10:39 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,924 POSTS
Yep, that is a good idea, or you can test them yourself, please check out this video that shows you how. check out about 3:45

https://youtu.be/uB2sm7BlXY4

Please go over this guide and get back to us.
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Tuesday, July 4th, 2023 AT 10:05 AM
Tiny
JR PAYNE
  • MEMBER
  • 45 POSTS
I'll go ahead and take a look at that and let you know back.
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Tuesday, July 4th, 2023 AT 7:09 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,924 POSTS
Please do, have a good week.
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Wednesday, July 5th, 2023 AT 12:16 PM

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