Question about 1999 Ford Expedition

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1999 expedition clunks when in Auto 4wd on slippery pavement.

When I stop somewhere and its slippery and hit the gas a little more than babeying it it makes a clunking noise. Truck has 114,000. Transmission fluid changed 20K ago. It dosen't do it when in 4wd.

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  • tooties4 Jan 30, 2009

    my expedition does the same thing. its all wheel drive and when i take off in it and get on the gas alil it makes a clanking noise like something slipping. i took the fuse out that went to the 4x4 shift motor and cluch and it stopped. the back wheels still turn but i dont think that the front ones are working


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That sounds like play in your rear end, it usually happens to all RWD vehicles at some point in their life, and also, check your U-joints, and tranny fluid. If low on fluid, your trans can slip causing a lag in shift.

Posted on Jan 30, 2009

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From your description this sounds like a part-time transfer case.
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Many CV joints, axles, U-Joints, differentials, and transfer cases are damaged and broken by folks who don't understand this.
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I hope this helps.

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