Banging when going over bumps
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Banging when going over bumps
Hi everyone,
I have a 2000 F250 2wd 6spd with a loud banging noise that has been vexing me for quite sometime now. The bang happens when I go over bumps (even small ones like road reflectors) while driving. I don't think it is suspension related since all the ball joints, front/rear swaybar and endlink bushings have been replaced fairly recently. All the springs and bushings also look okay. The noise seems to come from the rear, and I notice that if I let off the gas when I go over a bump, it does not make a sound. Conversely, if I am accelerating aggressively and hit a bump, the sound is much louder. Also, if I step on the clutch while keeping my foot steady on the gas, it makes a bang. Jumping up and down in the bed while the truck is parked does not recreate the sound. I have already greased the driveshaft spline joint so I'm thinking the sound might be differential or transmission related. Any ideas on what it could be?
Thanks.
I have a 2000 F250 2wd 6spd with a loud banging noise that has been vexing me for quite sometime now. The bang happens when I go over bumps (even small ones like road reflectors) while driving. I don't think it is suspension related since all the ball joints, front/rear swaybar and endlink bushings have been replaced fairly recently. All the springs and bushings also look okay. The noise seems to come from the rear, and I notice that if I let off the gas when I go over a bump, it does not make a sound. Conversely, if I am accelerating aggressively and hit a bump, the sound is much louder. Also, if I step on the clutch while keeping my foot steady on the gas, it makes a bang. Jumping up and down in the bed while the truck is parked does not recreate the sound. I have already greased the driveshaft spline joint so I'm thinking the sound might be differential or transmission related. Any ideas on what it could be?
Thanks.
Junior User
Joined: Sep 2004
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The Super Dutys are notorious for body mounts wearing out prematurely. When they do, you will get a loud clunk when going over bumps which is caused by the metal dishes for the bushings impacting the frame rails. They are very easy to inspect/change so check for that first. If you do need to change them, they are much easier to change then people would have you believe. I will be doing a write up on it shortly.
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The ujoint looks good. I'll check out the engine and trans mounts. I didn't look at all the body mounts, but the ones I saw when I was under the truck looked okay (had some cracks, but no missing pieces), but I'll plan on replacing them anyways. Wouldn't the body mounts make a noise regardless if I was coasting or accelerating?
Token Redneck
Joined: Jun 2007
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From: Breckenridge, TX
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The shocks were replaced with Bilsteins last year so they shouldn't be the culprit.
I forgot to ask what am I looking for in the engine and tranny mount. They seem to be metal mounts. I don't see any rubber bushings or any cracked parts.
I forgot to ask what am I looking for in the engine and tranny mount. They seem to be metal mounts. I don't see any rubber bushings or any cracked parts.
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Msp541
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Jul 31, 2004 01:28 PM