Science and Energy wrote:
I have relatively low hours driving a CRD. I had a diesel before and I know they are noisy and have tick sounds inherently.
I sometimes notice a more pronounced ticking and it could match some of the conversations I have read about loose or damaged torque converter bolts. I didn’t find any good references about checking them. I know there exists (have looked for it) a rubber cover access port. If this is removed is it as simple as sticking a wrench in and checking to see if they are torqued down? How many are there?
Has anyone had a tick sound and either retorqued the bolts or replaced their torque converter (retorqued in replacement process) causing the sound to lessen or go away?
I sometimes notice a more pronounced ticking and it could match some of the conversations I have read about loose or damaged torque converter bolts. I didn’t find any good references about checking them. I know there exists (have looked for it) a rubber cover access port. If this is removed is it as simple as sticking a wrench in and checking to see if they are torqued down? How many are there?
Has anyone had a tick sound and either retorqued the bolts or replaced their torque converter (retorqued in replacement process) causing the sound to lessen or go away?
To "get at" the TC bolts there are two ways:
1) Remove the starter and access them through the starter opening.
-----or------
2) There is a rectangular silicone plug just above and slightly inboard of the starter that allows access to the torque converter to flexplate bolts, without having to pull the starter.
If the TC / flexplate bolts are truly loose, I believe they would be making a lot of noise.
A few other items to check that can make excess noise on this engine are:
1) Serpentine Belt jumping or bouncing, especially at idle speeds.
---Can be caused by a bad alternator overdrive pulley or a weak serpentine belt tensioner and / or a combination of the two of them. Replace both if this is found to be the issue.
2) Harmonic balancer pulley going bad; the rubber bonding can become loose or the 4 bolts holding it to the crankshaft become loose which can allow the pulley to rattle at times. (front crankshaft pulley)
3) A "Ticking" sound can also be indicative of a small exhaust leak. May be louder when you first start engine up, but grows weaker as engine warms up.
4) Engine mounts bad. This engine has a type of hydraulic mount that can go bad and rattle really bad. Can sound like a loose bolt in a tin can when shaken.
Let us know what you find!
Woops! 