Sock Puppet
Active Member
- Joined
- August 20, 2014
- Messages
- 92
- Reaction score
- 4
- City, State
- High Desert
- Year, Model & Trim Level
- 2002 Explorer XLS 4X4
I have a ticking sound after start-up (when cold) and I'm 90% sure it's coming from my transmission. When I first started hearing it I thought it was the rear timing chain hydraulic tensioner (worn out spring) so I replaced it. It made no difference. I've since spent some time under the rig when it does it, and with my mechanics stethoscope I strongly believe it's coming from the tranny. Everything sounds fine in the engine from front to back, but I know mechanical sound can travel in weird ways.
I would compare the sound to a lifter tap or small exhaust leak. Is there anything in the transmission that can make that sound? I know jack about auto trannies. I'm wondering if it could be the solenoid pack? The speed of the tap increases with RPM, but only up to about 1200 RPM when it goes away. It quiets down after warming up and/or driving it a little ways. When warm everything sounds quiet as could be. No shifting issues or strange behaviors. I drained the transmission oil pan, replaced the filter, and re-filled a couple of months ago. I never heard the noise before doing the filter replacement.
Any ideas? All help is appreciated!
I would compare the sound to a lifter tap or small exhaust leak. Is there anything in the transmission that can make that sound? I know jack about auto trannies. I'm wondering if it could be the solenoid pack? The speed of the tap increases with RPM, but only up to about 1200 RPM when it goes away. It quiets down after warming up and/or driving it a little ways. When warm everything sounds quiet as could be. No shifting issues or strange behaviors. I drained the transmission oil pan, replaced the filter, and re-filled a couple of months ago. I never heard the noise before doing the filter replacement.
Any ideas? All help is appreciated!