all time four wheel drive is not working on 1993 Jeep Grand Cherokee

went into the mountains today and my all time four wheel drive failed to work . tried to shift into low range and that lowered the speed but still just rear wheel drive. could it be a relay? or fuse ?

Asked by for the 1993 Jeep Grand Cherokee
1 answer 1 comment
Could be one of these 2 switches depending on which transfer case your jeep came with (vacuum or electric) Both are available at Napa auto parts or www.napaonline.com or int the case of the vacuum model a vacuum hose leak

Transfer Case Select Switch, (4) Ports;
Product Line: Balkamp
Part Number: BK 6002943
$9.99

Features & Benefits Duplicates Original Equipment In Fit & Function
Warranty 12 Months or 12,000 Miles Whichever Occurs First
Attributes # Switch Terminals : (4) Ports
Transfer Case Switch
Application Information: 1993 Jeep Grand Cherokee
Comments: w/ 231 Transfer Case;w/ Vacuum Switch


Transfer Case Select Switch, (1) 2-Prong Connector; Dorman Automotive
Product Line: Balkamp
Part Number: BK 6002942
: $23.99
Features & Benefits Duplicates Original Equipment In Fit & Function
Warranty 12 Months or 12,000 Miles Whichever Occurs First
Attributes # Switch Terminals : (1) 2-Prong Connector
Contents : (1) Transfer Case Switch

Application Information: 1993 Jeep Grand Cherokee
Comments: w/ 242 Transfer Case;w/ Electric Switch
this answer makes no sense, the transfer case does not have a vacuum or electric front disconnect like some other Jeeps and GM suvs with similar transfer cases. Probably the viscous coupling if it is Quadratrac all-time 4x4.