JKRicky
Member
Wanted to share this in case someone else encounters this problem or noise. I have a 2014 JK Rubicon Automatic with 104k miles. (Of course just past my 100k powertrain warranty).
Couple weeks back, I began to notice a “ticking” sound which for some reason sounded like it was on the passenger side of the motor. Just figured it was the normal loud lifters in the JK or maybe a failing rocker bearing.
It started to get louder which made it easier to track down to the bottom side of the motor. It was loud now and sounded like a hard “knocking” and at this point didn’t sound good at all and feared the worst.
After some more digging underneath and using a stethoscope, was able to pinpoint it to the bell housing.
You can see inside by removing the two small round rubber pieces on the bottom, removing a small plate on the passenger side of bell housing (one bolt) or removing the starter (three bolts)
The dealer had replaced the torque converter several months back so I was thinking maybe a bolt backed out and was hitting or just loose. You can get a socket on the flex plate bolts that connect to the torque converter if you remove the starter and use a sockets to turn the crank from the front of the motor to rotate it.
All bolts were still tight so I had to keep digging. I was able to get a small camera inside and long and behold I saw this.
The flex plate was cracked at the center where it bolts up to the crank on the motor side.
I was surprised at the noise this crack can make and really sounded like a knocking rod.
So if you get this noise underneath, don’t freak out yet, it could be this!!
Hope this helps. I’ll try and add a video of the sound it was making.
Sent from my iPhone using WAYALIFE mobile app
Couple weeks back, I began to notice a “ticking” sound which for some reason sounded like it was on the passenger side of the motor. Just figured it was the normal loud lifters in the JK or maybe a failing rocker bearing.
It started to get louder which made it easier to track down to the bottom side of the motor. It was loud now and sounded like a hard “knocking” and at this point didn’t sound good at all and feared the worst.
After some more digging underneath and using a stethoscope, was able to pinpoint it to the bell housing.
You can see inside by removing the two small round rubber pieces on the bottom, removing a small plate on the passenger side of bell housing (one bolt) or removing the starter (three bolts)
The dealer had replaced the torque converter several months back so I was thinking maybe a bolt backed out and was hitting or just loose. You can get a socket on the flex plate bolts that connect to the torque converter if you remove the starter and use a sockets to turn the crank from the front of the motor to rotate it.
All bolts were still tight so I had to keep digging. I was able to get a small camera inside and long and behold I saw this.
The flex plate was cracked at the center where it bolts up to the crank on the motor side.
I was surprised at the noise this crack can make and really sounded like a knocking rod.
So if you get this noise underneath, don’t freak out yet, it could be this!!
Hope this helps. I’ll try and add a video of the sound it was making.
Sent from my iPhone using WAYALIFE mobile app
