Stall Speed Test - Fiat Bravo Service Manual

Auto transmission and differential
Description and operation
21-27.

Stall speed test

This test serves to check the performance of the transmission and engine, and is conducted by measur-
ing the maximum rpm that can be reached by the engine w i t h the selector lever at position D and R.
H n
The duration of the stall speed test must not exceed 5
To conduct the stall speed test, proceed as follows:
- chock the vehicle by placing wedges under the wheels;
- apply the handbrake fully;
- start the engine and bring it up to temperature;
- press the brake pedal d o w n hard with the left foot;
- move the selector lever to position D;
- press the accelerator pedal d o w n fully w i t h the right foot and quickly read the maximum speed
reached by the engine.
Stall speed: 2300 ± 1 5 0 rpm
Repeat the sequence of operations, but moving the selector lever to position R.
Stall speed: 2300 ± 1 5 0 rpm
Stall speed
Lower than specified value in both
D and R
Higher than specified value in D
Higher than specified value in R
Higher than specified value in both
D and R
34
Bravo-Brava @u
seconds.
Possible causes
* Insufficient engine power
* Incorrect operation of free
wheel on stator of torque
converter
* Insufficient line pressure
* Clutch C1 and C3 slipping
* Incorrect operation of
free wheel F1
* Insufficient line pressure
* Clutch C2 slipping
* Clutch C3 slipping
* Brake B2 slipping
* Insufficient line pressure
* Clutch C3 slipping
Publication no. 506.670/06
v
6
P4A34AB01