My '93 suzuki sidekick automatic transmission 4 wheel drive after warm up "overdrive off" starts flashing on and off and when on the drivetrain stops working

sounds like transmission ..weak internal pressures..failing torque converter... go to AAMCO or other for free diagnostic to confirm

OD flash means the 4speed, electronically shifted (TCM) is seeing an error, it has flash codes , pull them and see. what they are.

The power wire for my voltage condenser broke off?
try to be more exact. tell the exact place and wire color.
the 93 had 2 engines, 8v and 16v the latter is MPI with 4 injectors the former has 1 injector. which do you have.?
OD flash full story.
http://www.fixkick.com/tranny/slush/OD-flashes%20now%20what.html

Engine stalling is a second problem.
and can be caused by 50 diffr. things,
but the top #1 is, EGR main , stuck open.
aks on dah bbs. we can work the problem to the end.
http://www.fixkick.com/bbs2/Suzuki-bbs/forumdisplay.php?fid=2

engine

There should be a power/normal switch on the console just to the right of the automatic transmission gear selector. (Labeled A/T on my '96, but "power" in my '92.) This switch changes the shift profile of the 4 speed automatic transmission.

Is this a 4 wheel drive or a two wheel drive? I am assuming automatic transmission. If a 2 wheel drive automatic, it isn't designed to be towed four down. READ the owners manual. It needs to be towed on a dolly... backwards! If a 4 wheel drive, it most likely the transfer case wasn't in neutral. Also, read the manual.

bad relay switch

High to low /low to high ratio, you will need to be stopped and the transmission in neutral for this to be changed.
The 2wd - Auto - Lock switch can be switched at any time, as it operates an electromagnetic clutch - 2wd is rear wheels driving only - Auto - is to automatically engage 4wd when wheel slippage is detected (this also happens when turning at intersections, due to the inside wheels having a shorter path to the outside wheels, and can give a binding effect on sealed roads (I don't drive with it in auto on sealed roads) auto is excellent if you get, or expect wheel spin from an intersection when wet, just flick it on before or when you have wheel spin, also on gravel roads, having it on auto will greatly reduce the sliding of the back end, and make the car noticeably more stable.
Lock - this locks the differential, which further reduces wheel spin, when in mud / snow, but this will also make the car not want to turn corners, due to it resisting the different distances traveled by the inside and outside wheels.
A/T switch - this actually has 3 positions, and changes the shifting points of the automatic transmission - the middle is normal - Hold is to hold the gear longer, to improve fuel economy, and not change down (kick down) as quickly - Power has the opposite effect, it makes the transmission change down sooner under acceleration.
Also the O/D (overdrive) button on the side of the Tee shift lever, is to engage / disengage overdrive (5th gear) - never do heavy towing in overdrive, this will cook the transmission and overheat the engine (due to the radiator being used as a heat exchanger for the transmission fluid.
Another little quirk - if the transmission light starts flashing every 40 to 50 km, this can indicate that the wheels are different diameters (a flat tyre, or tyres have been swapped around and the spare is more or less worn than the other tyres), the computer will pickup that the wheels are turning at different speeds.
When cold, it is normal for the transmission to stay in 3rd (2-3 minutes of driving), until it has warmed up, and then stay in 4th for a few more km's (5-6 minutes), before it has warmed up enough to change into 5th (overdrive).

how to disconnect trque conveter to drive plate. 1995 suzuki sidekick jlx 4x4

o/d off means overdrive off. first check your shift there should be a button or switch for turning the overdrive on and off.
with the overdrive off you will not have the overdrive gear when driving. if it is not the switch then there is a problem with either with the wiring or the transmission. hope this helps

check that you have the freewheelng hubs engaged, this has to be manually on each front wheel hub
Regards Bill au.

As far as I know the procedure should go something like this...

Stop the vehicle, engage the parking brake and if applicable, get out and turn the hubs on the front wheels from Free, to Lock.(You may not have these on a Suzuki, they may be auto-lockers)

Get back in the vehicle and put the transmission shift selector into Neutral.

If you have a manual transfer case, move the selector-shaft to 4x4-High, or 4x4-Low -- whichever is desired. Now, putting the vehicle in gear with the transfer case is sometimes somewhat difficult. As long as the vehicle's transmission is in neutral, don't worry, the gears inside the transfer case are big and beefy -- Don't be afraid to be rough -- Again as long as the transmission is in neutral. You may also have to disengage the parking brake and slightly let the vehicle roll forward or back with your foot-brake to get the Transfer case to lock into place.

Once 4x4 of the selected High, Or Low range is selected, usually indicated by the vehicle jerking slightly with a slightly loud clank/thud. Move the Transmission selector out of neutral into your desired gear (Drive if Automatic, if Manual, whichever gear you pull out from). and voila! You should now be in 4-Wheel-Drive.

To disengage 4-Wheel-Drive. Just reverse the steps.