97 S-10, manual trans, 4WD, V6. wehn I engage the 4WD shifter, in motion or stopped, it hesitates to engage, then gives a loud bang then engages, then seems to disengage.(not positive about the last part) Linkage?
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Re: 97 S-10, manual trans, 4WD, V6. wehn I engage
The gears are binding, and the vehicle is new enough the the computer can say hell no, and pop it back out. That or the mechanical portion won't hold it in place because the gears are binding. If you need 4WD, take it in to get repaired, The techs will try it out, and test it to make sure what is wrong, trust me when they are stumped, thy get 3 or 4 other techs thinking about it. They can fix it for you. A friend of mine had this issue, except in a 98 silvarado, and when he engaged his, it did the same thing. I never asked how they fixed it, but I know he went to a dealership to do it.
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You disconnect it down at the transmission, and move the linkage manually. Doing so manually will engage the "park" position on the trans itself, but the wiring to release the key is connected directly to that shifter. The only way to "bypass" would be (_after_ disconnecting the linkage to the trans), disassemble the entire shifter from the console. You will find a switch. You simply need to engage the switch (or disengage it, depending on what position "park" would put the switch into)... Then you can remove the key. Seems to me it's easier to remove the car battery and simply use spare keys to lock the doors, until you can obtain a replacement shifter. You can even "block" the tires to prevent motion if you don't want to mess with the trans linkage until after you obtain a replacement shifter. (If I was there I'd get that to shift. I've done it before. I just can't explain how to do it. It's a pain-in-the-rear-jury-rig process, but it can be done).
First check these steps in engaging.
Stop completely, clutch in or neutral for automatics, step on brake pedal, engage 4wd, select gear. Sometimes the engage switch is connect to the brake also. I have to step onthe brake to get into 4Low on my 1993 Explorer.
Next step is to check for loose wires under the transmission. If the plug came out the trans wont know to get into 4wd.
Lastly, if you are handy, get a chiltons or othr manual and remove and clean the 4wd module.
If none of these work then the module is probably burned out, replace or take to a shop for replacement.
Hope this helps you get it fixed.
You have vacumn lines the run to your transfer case and then to the vacumn motor on the front axle. you need to check the lines and connections. If vacumn is working fine, then motor on front axle is bad.
It doesn't take long to learn when and how to use your
truck's 4WD system. Follow these steps and you'll feel confident about
engaging the system the next time you need to get out of a slippery
For a conventional system, where you can select 2WD or 4WD, the
instructions refer to engaging 4WD. For trucks with permanent 4WD, they
refer to locking the center differential. Time
to your owner's manual to find out how to engage your truck's 4WD
When driving in snow, mud, or just going off
road, shift into 4WD when you get ready to leave solid ground. If you
have lockable front hubs, lock them for those operations.
severe conditions, use low range if available. Before shifting into low
range you must either stop or slow down to at least 3 mph to prevent
When you return to normal conditions,
shift out of 4WD or unlock the center differential. If the shifter
doesn't want to move from 4WD or the differential lock stays engaged,
don't panic, becaue the problem is normal and is caused by pressure on
Try backing in a straight line about 10 feet and try to
the shifter again.
If the shifter still won't move, try backing in an "S"
pattern while trying to move the shifter.
you have lockable hubs, don't forget to unlock them when you return to
permanent 4WD are set up for everyday driving, but not necessarily for
maximum traction on slick surfaces. Engaging the differential lock
increases the vehicle's traction capabilities.
operate a locked 4WD on dry, hard surfaces. Doing that could cause
damage to the driveshafts, differentials or transfer case.