Abram
Active Member
I'm back with more questions! (Thank you to those who have been so helpful already in these early days of my LR journey). I've been digging around through this and other forums and haven't quite found exactly these conditions, but I did get some ideas of what to potentially look into.
I'm trying to diagnose two separate vibrations I'm getting from the truck before I try to get anything repaired. I'll try to describe them as best I can. I do have a GAP tool now and am learning to use it properly but if you have any suggestions on things to monitor with it specifically based on these descriptions, I'm all ears! beyond these described conditions the truck drives very smoothly, has no leaks, no CELs or codes, no peculiar noises or smells either.
Vibration #1:
Conditions: It occurs when slowly releasing the brake from a full stop, or if I partially release the brake in stop-and-go traffic. It will also occur if coming to a complete stop just before full braking. Beyond say 2-3mph or with any application of the gas pedal it completely disappears.
What it feels like: It feels almost like a pulsing, surging motion though I can't quite pinpoint yet where it is felt the strongest. This is making me think it's something in the braking system but I can't be sure as of yet.
Some Extra Details: I know the truck had all the brake pads replaced at the same time in August of last year (prior to my purchase) but I don't know the history or full condition of the rotors. I'm partially thinking it has to do with the brakes as I also get a pretty significant squeal from the brakes when braking in reverse. If it's not braking-related, does what I described make you think of anything else to look into?
Vibration #2:
Conditions: It occurs only between 20-30mph with approximately 70-80%+ throttle, especially noticeable if accelerating up a hill. Beyond 30mph it completely disappears. If accelerating slowly past 30mph I don't really feel it either.
What it feels like: It feels like a pretty noticeable vibration / shaking in the center of the vehicle, it does not "shake" the steering wheel but you can technically feel it in the wheel too. As noted, it's completely gone beyond 30mph.
Some Extra Details: After purchasing the truck last month during some of the repairs I had done I replaced both the motor and transmission mounts and have changed the oil, and flushed both the transfer case and diffs and replaced their fluid. The vibration was occurring before this service and was not worsened or improved after having done so. Some top of mind thoughts are that it could be wheel / tire related potentially? The front two tires were replaced last year and are still in new condition, the rear two tires are both at 8/32 on wear. Could also possibly be transmission related? Perhaps flushing and replacing the fluid would help? I don't have history of transmission service unfortunately. Potentially differential related? Could be old spark plugs causing a slight misfire?
Thank you for all your help as I try to figure this out!
I'm trying to diagnose two separate vibrations I'm getting from the truck before I try to get anything repaired. I'll try to describe them as best I can. I do have a GAP tool now and am learning to use it properly but if you have any suggestions on things to monitor with it specifically based on these descriptions, I'm all ears! beyond these described conditions the truck drives very smoothly, has no leaks, no CELs or codes, no peculiar noises or smells either.
Vibration #1:
Conditions: It occurs when slowly releasing the brake from a full stop, or if I partially release the brake in stop-and-go traffic. It will also occur if coming to a complete stop just before full braking. Beyond say 2-3mph or with any application of the gas pedal it completely disappears.
What it feels like: It feels almost like a pulsing, surging motion though I can't quite pinpoint yet where it is felt the strongest. This is making me think it's something in the braking system but I can't be sure as of yet.
Some Extra Details: I know the truck had all the brake pads replaced at the same time in August of last year (prior to my purchase) but I don't know the history or full condition of the rotors. I'm partially thinking it has to do with the brakes as I also get a pretty significant squeal from the brakes when braking in reverse. If it's not braking-related, does what I described make you think of anything else to look into?
Vibration #2:
Conditions: It occurs only between 20-30mph with approximately 70-80%+ throttle, especially noticeable if accelerating up a hill. Beyond 30mph it completely disappears. If accelerating slowly past 30mph I don't really feel it either.
What it feels like: It feels like a pretty noticeable vibration / shaking in the center of the vehicle, it does not "shake" the steering wheel but you can technically feel it in the wheel too. As noted, it's completely gone beyond 30mph.
Some Extra Details: After purchasing the truck last month during some of the repairs I had done I replaced both the motor and transmission mounts and have changed the oil, and flushed both the transfer case and diffs and replaced their fluid. The vibration was occurring before this service and was not worsened or improved after having done so. Some top of mind thoughts are that it could be wheel / tire related potentially? The front two tires were replaced last year and are still in new condition, the rear two tires are both at 8/32 on wear. Could also possibly be transmission related? Perhaps flushing and replacing the fluid would help? I don't have history of transmission service unfortunately. Potentially differential related? Could be old spark plugs causing a slight misfire?
Thank you for all your help as I try to figure this out!
