DonnaJaneMontero
Member
So what happened:
I was driving home, and it was roughly an hour trip. I held a steady 75mph most of the way. She's running like butter, solid as a rock (recently paved freeway helps, too). No wobbles, vibrations, or anything like that. Temp is holding solid and oil pressure looks as it should.
Last 10 miles or so, on a stretch where the bypass turns back into a road, I notice a metallic grinding noise. It builds in volume, then drops off. 30 seconds later it builds up again, then drops off with a *shink!* sound. As I come to a red light, it comes back as a rattling grind now, and it sounds like it's coming from the transfer case, even though I'm sitting still. Taking off from the light, I rest my hand on the t-case shifter- no vibration. No vibration from the car, either. None during all of this.
I engage 4x4, and it does so without a hitch. Lights on the dash do as they should, too. I disengage 4x4, and lights go off as they should. All seems well with that.
Acceleration seemed fine, as did braking. I drove the last few blocks with the window down and didn't hear a thing. Got home, parked in the driveway. Revved the engine gently and it sounds as smooth as it had all day. Shut it off and look under the truck- no puddles, drips, bare metal, or anything dangling (except a random stick near the trailing arm).
It's not my daily, so it's been sitting all day today. But I've been going nuts on how to figure out of what I heard was something deeply serious or not. I don't have the money for professional diagnostics right now, so anything I can try, please suggest.
My thoughts are torque converter, but I've had no slipping lately and no shuddering, either. At least none that I've noticed. The mud tires I'm running cause a certain level of extra vibration at high speeds, but even last night that was minimal.
All help is appreciated!!
I was driving home, and it was roughly an hour trip. I held a steady 75mph most of the way. She's running like butter, solid as a rock (recently paved freeway helps, too). No wobbles, vibrations, or anything like that. Temp is holding solid and oil pressure looks as it should.
Last 10 miles or so, on a stretch where the bypass turns back into a road, I notice a metallic grinding noise. It builds in volume, then drops off. 30 seconds later it builds up again, then drops off with a *shink!* sound. As I come to a red light, it comes back as a rattling grind now, and it sounds like it's coming from the transfer case, even though I'm sitting still. Taking off from the light, I rest my hand on the t-case shifter- no vibration. No vibration from the car, either. None during all of this.
I engage 4x4, and it does so without a hitch. Lights on the dash do as they should, too. I disengage 4x4, and lights go off as they should. All seems well with that.
Acceleration seemed fine, as did braking. I drove the last few blocks with the window down and didn't hear a thing. Got home, parked in the driveway. Revved the engine gently and it sounds as smooth as it had all day. Shut it off and look under the truck- no puddles, drips, bare metal, or anything dangling (except a random stick near the trailing arm).
It's not my daily, so it's been sitting all day today. But I've been going nuts on how to figure out of what I heard was something deeply serious or not. I don't have the money for professional diagnostics right now, so anything I can try, please suggest.
My thoughts are torque converter, but I've had no slipping lately and no shuddering, either. At least none that I've noticed. The mud tires I'm running cause a certain level of extra vibration at high speeds, but even last night that was minimal.
All help is appreciated!!