Billy Garcia
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Someone know the reason for this sound when start up my RAM ? Clank Noise!
I’m so frustrated!!!
I’m so frustrated!!!
Thank youTried playing with the brake during startup... since most agree it doesn't happen during remote starts.
Try applying very slight pressure to the brake and release as soon as the starter engages. For my experience it makes no clank.
Apply heavy brake pedal pressure throughout the starting process and the clank is there.
More investigation to follow.
Somebody mentioned that on another thread. It is legitimate....definitely something with the brake. I now just lightly press the brake and release it as soon as I hit start and have not had a clank since then. I think it may be that the parking pawl is making the clank when you press the brake hard and hold it in.Tried playing with the brake during startup... since most agree it doesn't happen during remote starts.
Try applying very slight pressure to the brake and release as soon as the starter engages. For my experience it makes no clank.
Apply heavy brake pedal pressure throughout the starting process and the clank is there.
More investigation to follow.
I don't think this is brake related. This noise is most likely attributed to the slack in the auto 4WD system. When the truck sits while parked, there is some (read: very slight) movement from then to when you start it. This "slack" is from the drive train no longer having tension to propel the truck. You don't need to have the truck in Auto to experience the noise- it's just the transfer case taking up the slack. Pressing the brakes believe it or not just helps create the tension again and might affect the slack (noise).
Do any of these trucks make this noise without Auto 4WD? If so, how does the transfer case differ from the non Auto 4WD trucks?
Tried playing with the brake during startup... since most agree it doesn't happen during remote starts.
Try applying very slight pressure to the brake and release as soon as the starter engages. For my experience it makes no clank.
Apply heavy brake pedal pressure throughout the starting process and the clank is there.
More investigation to follow.
Mine does this as well, not as loudly, but it does it. Seems to be only first thing in the morning when coming out of the garage.
I've tried all sorts of different pedal pressures and I can't get it to clank or not clank consistently. I'm suspicious it has to do with drivetrain slack as mentioned above, but not in the tcase, but either in the rear end flange, or the driveshaft spline(s) for the slip yoke.
I'm gonna add another test for you guys, Instead of paying attention to brake pressure when you start the truck, pay attention to brake pressure when you park the truck and the auto parking brake engages. I often add brake pressure while the auto parking brake is engaging, it order to get it to hold the truck, as it still rocks into park if I don't touch the brake. I'm ocd about that stuff, and I'm always the person who puts the e-brake on, lets off the service brakes, and THEN puts a vehicle into park. It's just good practice, because doing the opposite (park fist, then let off brakes, then ebrake) does not relieve the parking pawl of the stresses of the vehicles weight when on a hill. I'm still playing with my data on setting the brake pressure when parking, if you guys wan't to add to it, that'd be great.
I'm the same way with parking, I always apply the parking brake, release to let it settle, then put it in park. I've noticed with auto parking brake, it still settles a little which means there is pressure put on the pawl, so I don't use it.
I thought the same thing, how I apply the parking brake effects the slack in the driveline which could effect the noise we hear from time to time. I'll keep an eye on it as well.
I have mine on auto all the time, but I add brake pressure as it's engaging and that seems to help it hold on hills. I might try turning off the auto feature and just doing it the "old fashioned" way where I press the button manually.