Toyota
Dodge Durango
 Service Manual
Transmission and Transfer Case » Diagnosis and testing
Road testing

Before road testing, be sure the fluid level and control cable adjustments have been checked and adjusted if necessary. Verify that diagnostic trouble codes have been resolved.

Observe engine performance during the road test.

A poorly tuned engine will not allow accurate analysis of transmission operation.

Operate the transmission in all gear ranges. Check for shift variations and engine flare which indicates slippage. Note if shifts are harsh, spongy, delayed, early, or if part throttle downshifts are sensitive.

Slippage indicated by engine flare, usually means clutch, band or overrunning clutch problems. If the condition is advanced, an overhaul will be necessary to restore normal operation.

A slipping clutch or band can often be determined by comparing which internal units are applied in the various gear ranges. The Clutch and Band Application chart provides a basis for analyzing road test results.

    More about «Diagnosis and testing»:

    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

    Dodge Durango Service Manual / Transmission and Transfer Case / Diagnosis and testing / Road testing

    Dodge Durango Service Manual

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