Dodge Durango

 Service Manual

Transmission and Transfer Case » Diagnosis and testing
Automatic transmission diagnosis

Automatic transmission problems can be a result of poor engine performance, incorrect fluid level, incorrect linkage or cable adjustment, band or hydraulic control pressure adjustments, hydraulic system malfunctions or electrical/mechanical component malfunctions.

Begin diagnosis by checking the easily accessible items such as: fluid level and condition, linkage adjustments and electrical connections. A road test will determine if further diagnosis is necessary.

Automatic transmission diagnosis

Effects of incorrect fluid level

Causes of burnt fluid

Fluid contamination

Preliminary diagnosis

Park/neutral position switch

Overdrive electrical controls

Gearshift cable

Road testing

Analyzing road test

Hydraulic pressure test

Air testing transmission clutch and band operation

Converter housing fluid leak diagnosis

Diagnosis tables and charts-re transmission