What is the problem with a gearbox if you engage a drive gear and a car luck power to move forward? but in revers gear it moves with full revers power.

SOURCE: AUDI A4 AUTOMATIC SLOW TO

Not overly familiar with Audis but it sounds like either a.) you have an electronic tranny that has a serious bug or b.) there's a problem in the computer of the car itself. What is sounds like is the car is taking a long time to "understand" that you're telling it to move forward. How new is the car? When you push on the gas before the three minutes, what happens?

SOURCE: GEARBOX WONT GO INTO GEAR

hi from uk could you please give a little more info ? what make/model car ? has this problem occured suddenly? has car been layed up off road some time prior to this unable to select gears ? this problem sounds very much like the clutch drive plate is either stuck to flywheel hence question above ? or it is sticking on primary/spigot shaft for some reason and failing to disengage drive to g/box? how does clutch pedal feel ? you might try selecting 2nd gear with clutch fully pressed and h/brake on then try starting engine if engine starts ?runs then put slight revs on and slip clutch a few times this may work if plate is sticking? if you come back with update may be able to advise further

SOURCE: car does not drive forward but works in reverse

Sad to say but your automatic transmission has bit the dust.

SOURCE: Prob's with my Audi A6 2003 Auto 3.0 V6 (gearbox)

Doubt it as the fault suggests you need to look into the range sensor. If similar to Renault there is a switch on the gearbox that senses where the select lever is (at the gearbox end). If the display is wrong then the sensor needs looking at and either it will need to be adjusted into a set position by moving it, or perhaps the connector to it or wiring to/from it have a fault.

SOURCE: my car wont move forward or reverse

Chances are is that the torque converter needs to be replaced. However, the transmssion on this vehicle are only serviceable by transmision shops. No regular mechanic will open up the transmission. When the torque converter fails (clutch and plates shutters to small pieces) the debri flows in the transmision thereby potentially destroying the gears and/or clogging the filter and pump. Go straight to a reputable transmission shop and let them correctly diagnose the transmission.