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Home >> Mazda >> 1990 >> Protege 4WD, Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Diagnosis - F4A-El, FU06, G4A-El, G4AX-El & G4A-Hl >> Testing >> Stall Speed Evaluation

Stall Speed Evaluation

High In "L", "S", "D" & "R" - Worn oil pump. Oil leakage from oil pump, control valve and/or transmission case. Stuck pressure regulator valve.

High In "D", "S" & "L" - Forward clutch and/or one-way clutch No. 1 slipping.

High In "D" - One-way clutch No. 2 slipping.

High In "S" Hold & "L" Hold - Coasting clutch slipping.

High In "D" Hold & "S" Hold - 2-4 brake band slipping.

High In "R", "L" & "L" Hold - Low and reverse brake slipping.

High In "R" - Low and reverse brake slipping. Reverse clutch slipping. Perform road test to determine whether problem is low and reverse brake or reverse clutch.

Below Specifications - Engine out of tune. One-way clutch slipping within torque converter.