Popping sound when taking off.
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Senior User
Joined: Jul 2001
Posts: 250
Likes: 1
From: South Carolina
Popping sound when taking off.
Ok, I have a short wheel base 95 150 with a 300 and 5speed here at the house. After braking for a stop, when you take back off there is a slight pop or thud coming from the drive line just about the time you get the clutch out good. I just changed the gears in the truck and the owner says he didn't notice it before. The truck has 35's on it, it had 3.55's, I installed 4.56's. I had a friend drive off in it as I watched, and all I can see is there appears to be movment in the drivshaft inside the transfer case. Is it possible the splines on the output shaft of the transfer case are worn enough to make this slip or pop? There is also signs of weaping oil at the seal there. I am looking further, and have double checked every thing in the axle. All the internals are set up right and tight. Any input would be appreciated. Hippie.
Hotshot
Joined: Aug 2002
Posts: 12,679
Likes: 15
From: BC, Canada
Popping sound when taking off.
Remove the driveshaft and lube the inside of the splines where it goes into the transfer case with some grease. Ford has teflon grease for this but most good grease will work. The splines get a bit worn and then they bind. When they release you get a clunk or honk sorta noise.
Post Fiend
Joined: Nov 2001
Posts: 14,947
Likes: 6
From: Topsfield, MA
Popping sound when taking off.
I have a similiarly described problem. Not sure what mine is but it seems to be a loose crossmember. It only happens when the engine is torqued up. But it did happen when I went over a large obstical enough to twist the frame a bit.
Junior User
Joined: Oct 2001
Posts: 51
Likes: 0
From: Nebraska
Popping sound when taking off.
I've had a popping noise for 3 years. I've changed u-joints, axle pivot bushings, ball joints, tightened the tranny crossmember, and even crawled around underneath tapping all the frame rivets looking for loose ones which I guess is a common problem. I finally found it! stupid engine mount on the passenger side. The torque of the engine compressed the ruber and the metal pieces hit each other. I had to have somebody lay under the truck and listen while i held the brakes and hit the gas. I don't know if the engine mounts are knows for this but it's definately worth a look, at least it's a cheap fix.
