SPECIFICATIONS (A/T)
| Item | A4AF3 | ||
|---|---|---|---|
| Torque converter type | D3-element, 1-stage, 2-phase type | ||
| Transaxle type | D4-speed forward, 1-speed reverse | ||
| Engine displacement | 1.5 SOHC | 1.6 DOHC | |
| Gear ratio | 1st | 2.846 | < |
| 2nd | 1.581 | < | |
| 3rd | 1.000 | < | |
| 4th | 0.685 | < | |
| Reverse | 2.176 | < | |
| Final gear ratio | 3.656 | 4.041 | |
| End play (mm) | Front clutch snap ring | 0.5 ± 0.1 | |
| Rear clutch snap ring | 0.8 ± 0.1 | ||
| End clutch snap ring | 0.5 ± 0.1 | ||
| Low and reverse brake snap ring | 0.675~0.987 | ||
General Specifications
Scheme 1
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Scheme 12
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Scheme 27
STALL SPEED ABOVE SPECIFICATION IN "D"
If stall speed is higher than specification, the rear clutch or overrunning clutch of the transaxle is slipping. In this case, perform a hydraulic test to locate the cause of slippage.
STALL SPEED ABOVE SPECIFICATION IN "R"
If the stall speed is higher than specification, the front clutch of the transaxle or low-reverse brake is slipping. In this case, perform a hydraulic test to locate the cause of slippage.
STALL SPEED BELOW SPECIFICATION IN "D" AND "R"
If the stall speed is lower than specification, insufficient engine output or a faulty torque converter is suspected. Check for engine misfiring, improper ignition timing, or valve clearance etc. If these are good, the torque converter is faulty.
Scheme 28
- Drive the vehicle until the fluid reaches normal operating temperature [80-90°C (176-194°F)].
- Place the vehicle on a level surface.
- Move the selector lever through all gear positions. This will fill the torque converter and hydraulic system with fluid, then place lever in "N" (Neutral) position.
- Before removing the dipstick, wipe all contaminants from around the dipstick. Then take out the dipstick and check the condition of the fluid. The transaxle should be overhauled under the following conditions. If there is a "burning" door. If the fluid color has become noticeably black. If there is a noticeably excessive amount of metal particles in the fluid.
- Check to see if the fluid level is in the "HOT" range on dipstick. If fluid level is low, add automatic transaxle fluid until the level reaches the "HOT" range. Transaxle fluid: DIAMOND ATF SP-III, SK ATF SP-III Low fluid level can cause a variety of abnormal conditions because it allows the pump to take in air along with fluid. Air trapped in the hydraulic system forms bubbles which are compressible. Therefore, pressures will be erratic, causing delayed shifting, slipping clutches and brakes, etc. Improper filling can also raise fluid level too high. When the transaxle has too much fluid, gears churn up foam and cause the same conditions which occur with low fluid level, resulting in accelerated deterioration of automatic transaxle fluid. In either case, air bubbles can cause overheating, and fluid oxidation, which can interfere with normal valve, clutch, and servo operation. Foaming can also result in fluid escaping from the transaxle vent where it may be mistaken for a leak.
- Be sure to examine the fluid on the dipstick closely.
Note. When new, automatic transmission fluid should be red. The red dye is added so distinguish it from engine oil or antifreeze. As the vehicle is driven the transmission fluid will begin to look darker. The color may eventually appear light brown. Also, the dye, which is not an indicator of fluid quality, is not permanent. Therefore, further investigation of the automatic transaxle is required if
- the fluid is dark brown or black.
- the fluid smells burnt.
- metal particles can be seen or felt on the dipstick.