Hyundai terracan 2.9 crdti automatic. Was in 4wd when our bang from transmission, vehicle no longer engages 4wd but can feel the centre diff engage. No noises from transmission and runs very quietly. Any ideas ?

SOURCE: Loud clicking noise when 4wd is engaged on left wheel when turnin

Check your cv (constant velocity joint) , It may have a big clearance which is the source of the noise when turning left or right and when 4wd is engage. Juts like front wheel drive cars, if the cv joint is with clearance it will tend to sound in the left or right turns. It is not exactly clicking sound , nmore like knocking sound , low in pitch, but not heavy.

Dennis Mulford

• 1055 Answers
• Posted on Feb 23, 2009

SOURCE: 98 K1500 suburban, can not engage 4wd, HI or Lo runs otherwise

your doing it right but your accuater is bad 59.00 auto zone easy install

SOURCE: 1992 4Runner 4wd will not engage

check the wires from the shifter for the transfer case they maybe discounected like mine were now mine works fine

SOURCE: hyundai excel 1996 automatic will engage reverse

It appears you have a Forward Clutch FAILURE. Replace the trans after you get it diagnosed and verified by a professional technician. By the way, do you have a Check Engine light? If so, what is the diagnostic code? The dealership can scan the system and find any codes which may have been stored in the TCM (Transmission Control Module). If there were any 'Incorrect Gear Ratio" codes, it's most probably the trans itself.

SOURCE: 2002 hyundai santa fe transmission will not engage

You might have lost your lower gears, I would have someone look at it to see if your gears are gone or if its just a faulty sensor.