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LINE PRESSURE TEST SPECIFICATIONS (ASPIRE) LINE PRESSURE TEST SPECIFICATIONS (ALL EXCEPT ASPIRE) LINE PRESSURE CUT-BACK TEST 1. Connect oil pressure gauges to line pressure and governor pressure ports. See Fig. 6 . Position gauges so they can be seen from driver's seat. 2. Connect a hand-held vacuum pump to vacuum modulator. See Fig. 6 . Position vacuum pump so it can be operated from driver's seat. With shift lever in "D", gradually increase engine RPM and observe pressure gauge readings. Record results. 3. With shift lever in "D", gradually increase engine RPM, and apply 8 in. Hg to vacuum modulator. When line pressure reading suddenly decreases, observe the governor pressure gauge. Refer to LINE PRESSURE CUT-BACK TEST SPECIFICATIONS . 4. If governor pressure gauge readings are not within specifications, ensure rod in vacuum modulator is installed. If a rod is installed, rod length may be incorrect or vacuum throttle valve is sticking. See VACUUM THROTTLE VALVE DIAPHRAGM (MODULATOR)
under TESTING. LINE PRESSURE CUT-BACK TEST SPECIFICATIONS GOVERNOR PRESSURE TEST 1. Attach oil pressure gauge to governor pressure check port. See Fig. 6 . Position gauge so that it may be seen from driver's seat. Shift transaxle into "D" and road test vehicle. 2. Accelerate vehicle smoothly and record governor pressure readings at 20, 35 and 55 MPH. See GOVERNOR PRESSURE SPECIFICATIONS . If pressure gauge readings are not within specifications, check for fluid leakage in line pressure hydraulic circuit and/or governor pressure hydraulic circuit. Also check for a faulty governor. GOVERNOR PRESSURE SPECIFICATIONS REMOVAL & INSTALLATION See the appropriate TRANSMISSION REMOVAL & INSTALLATION - A/T article in this section. Refer to the following menu: TORQUE CONVERTER The torque converter is a sealed unit and cannot be serviced. Check for cracked or worn ring in seal area. Measure bushing in converter boss. TRANSAXLE DISASSEMBLY 1. Remove torque converter. Attach transaxle to appropriate holding fixture. Remove park/neutral switch, kickdown solenoid and vacuum modulator with rod. Remove oil dipstick and tube. Remove speedometer driven gear retaining bolt and lift out gear assembly. Remove 2. Remove oil pan. Remove valve body. DO NOT lose check ball and spring. Position transaxle with oil pump facing downward. With flat-blade screwdriver inserted in wide slot between front clutch drum and sun shell, pry down on front clutch drum. Do this several 3. Using a feeler gauge, measure front clutch drum end play. See Fig. 7 . Check clearance of small slot between front clutch drum tabs and Application psi (kg/cm 2 ) At Idle "D" 46-54 (3.2-3.8) "2" 150-166 (10.5-11.7) "R" 76-95 (5.3-6.7) At Stall Speed "D" 141-157 (9.9-11.0) "2" 150-166 (10.5-11.7) "R" 251-262 (17.6-18.4) Application psi (kg/cm 2 ) At Idle "D" 43-57 (3.0-4.0) "2" 114-171 (8.0-12.0) "R" 57-110 (4.0-7.0) At Stall Speed "D" 128-156 (9.0-11.0) "2" 114-171 (8.0-12.0) "R" 228-270 (16.0-19.0) Vacuum Pump Reading Governor Pressure psi (kg/cm 2 ) 0 in. Hg (Atmosphere) 14-23 (.98-1.6) 8 in. Hg 6-14 (.42-.98) Application psi (kg/cm 2 ) Aspire & Festiva 20 MPH 13-21 (.9-1.5) 35 MPH 25-35 (1.8-2.5) 55 MPH 58-70 (4.0-4.8) |