The automatic transmission accumulator cover can leak due to a failed o-ring. Replacing the o-ring and cover will commonly correct this issue.
Car Problem Reports
Isuzu Rodeo Failed O-rings Can Cause Accumulator Cover to Leak on Automatic Transmissions
Isuzu Rodeo Problem
Drive Train Affected: 4WD
Visitor, 1999 Isuzu Rodeo, 98,000 mi
leakng fluid from accumalator seal.cant find a parts place that has one.everybody thinks im crazy when i say accumalator seal on tranny.