Transmission

Hi and thanks for using 2carpros,com

If the check engine light is staying on when driving, have the computer scanned for diagnostic trouble codes. Here is a quick video showing how that is done.

https://youtu.be/YV3TRZwer8k

If the light isn't staying on, I suggest starting by checking the transmission fluid level as well as its condition. Here are the directions for checking the fluid. The attached picture correlates with these directions,

AUTOMATIC TRANSAXLE FLUID

INSPECTION
1. Drive the vehicle until the fluid reaches normal operating temperature 70 - 80°C (158 - 176°F).
2. Place the vehicle on a level surface.
3. Move the selector lever through all gear position. This will fill the torque converter and the hydraulic system with fluid and move the selector lever to the "N" (Neutral) or "P" (Park) position.
4. Before removing the oil level gauge, wipe all contaminants from around the oil level gauge. Then take out the oil level gauge and check the condition of the fluid.

NOTE: If the fluid smells as if it is burning, it means that the fluid has been contaminated by fine particles from the bushes and friction materials, a transaxle overhaul may be necessary.

5. Check that the fluid level is at the HOT mark on the oil level gauge. If the fluid level is low, add automatic transaxle fluid until the level reaches the "HOT" mark.
Auto transaxle fluid:
DIAMOND ATF SP-III, SK ATF SP-III
Quantity: 7.8L (8.2 US qt, 6.9 Imp.qt)

NOTE: Low fluid level can cause a variety of a 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 chum 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 brake operation. Foaming can also result in fluid escaping from the transaxle vent where it may be mistaken for a leak.

See Pic 1

6. Insert the oil level gauge securely.

NOTE: When new, automatic transmission fluid should be red. The red dye is added so the assembly plant can identify it as transmission fluid and distinguish it from engine oil or antifreeze. The red dye, which is not an indicator of fluid quality, is not permanent. As the vehicle is driven the transmission fluid will begin to look darker. The color may eventually appear light brown.

Let me know if this helps. Also, please describe what is actually happening when you feel the problem.

Take care,
Joe