Road Test

ROAD TESTING

Before road testing, be sure the fluid level and control cable adjustments have been checked and adjusted if necessary. Verify that all 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 or line pressure problems.


A slipping clutch can often be determined by comparing which internal units are applied in the various gear ranges. The Clutch Application charts provide a basis for analyzing road test results.

68RFE Clutch Application Chart: