94 Ford Ranger 4x4 V6 4.0L automatic locking hubs (push button) 4x4

It recently took my ranger out and put it in 4 wheel drive, when doing so after about fifty feet I heard a loud clunk. And it keeps on clunking as I drive it more. (You can feel it also) like the 4x4 is engaging and disengaging. Or something like that. It drives fine out of 4x4.
Please help,

Thanks - Tim

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TIM WITH (THE RAVEN)1994 FORD RANGER XLT SUPERCAB 4X4, 4.0L V6, 5" SUSPENSION LIFT 33X12.5 MUD TERRAIN TIRES, ORIGINAL OWNER

I think your shift motor is bad.

Sent from my DROID X2 using FRF App

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1999 XLT - May 2013 TOTM - Totaled

What terrain where you on when you put it in 4x4?? This may or may not be your issue----> In addition to the clunk, do you also have flashing 4x4 light? On my 89 Ranger I've gotten the clunk and flashing 4x4 light and on my visor is a manufacture sticker that says its an "improper range shift" when this occurs. The solution listed is to get the truck back into the gear it was in before the improper range shift occurred. I've had to do this a few times with my truck. It sounds horrid like there is a major issue, but when corrected the clunking goes away. There is another option to fix it which I don't want to try and quote without going and reading it off the tag.... Don't know if this is your issue--thought I'd post it encase cause if it is this is an easy solution.

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89 4x4 Ranger ext cab, new rebuilt 2.9L 1998, leer cap, 6' bed, original tranny (auto), power windows/drs/seats, cruise control, 16 mpg LOL---sweet restoration project

No the 4x4 light does not flash. It does the same on street or dirt. I did put a new shift motor in it awhile back because the 4x4 stoped working.
now it works but with the clunking noise.

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TIM WITH (THE RAVEN)1994 FORD RANGER XLT SUPERCAB 4X4, 4.0L V6, 5" SUSPENSION LIFT 33X12.5 MUD TERRAIN TIRES, ORIGINAL OWNER

Auto hubs or manual? Auto hubs may not be engaging properly.

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1993 XLT 4x4, 4.0 liter, Auto, 149,000 miles, reg cab, stereo, air shocks.

It clunks as it goes in? Possible it's full of mud?

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My names Daniel Domenjoz I drive a 2011 Ford Ranger, with the following modifications; 3 inch lift, ironbull bumper from Arizona, 9.5 TDS kingone which, and an 11 gallon air tank to pump up my 33 BFG T/A MT's.

Auto hubs. It clunks when i drive it. I havent been in mud for a long time..

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TIM WITH (THE RAVEN)1994 FORD RANGER XLT SUPERCAB 4X4, 4.0L V6, 5" SUSPENSION LIFT 33X12.5 MUD TERRAIN TIRES, ORIGINAL OWNER

Hmm let me think

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My names Daniel Domenjoz I drive a 2011 Ford Ranger, with the following modifications; 3 inch lift, ironbull bumper from Arizona, 9.5 TDS kingone which, and an 11 gallon air tank to pump up my 33 BFG T/A MT's.

Do you have a bad cv joint? I know my driver side one is bad, and I read that they can cause the wheel not to engage, creating that loud clunk. I have the same noise with mine. Sometimes on a perfectly flat straight surface it does engage and there is no clunk

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2005 Ford Ranger Edge 4x4
3.0L, Air box mod, Torsion Cranked, 2" Leaf Blocks, 31x10.50-R15's on American Racing Wheels, Tinted Windows, 10in Pioneer Sub w/ 250watt Rockford Fosgate Amp