Subject: | Hesitation On Heavy Acceleration - Automatic Transaxle, Engine Miss in Neutral - Manual Transaxle, SOHC (LKO) Engine (Install New PCM Calibration) |
Models: | 1994 Saturns built before and including vehicle identification number VIN RZ 224246 for vehicles equipped with automatic transaxles and VIN RZ224395 for vehicles equipped with manual transaxle. |
IMPORTANT: 1994 Saturn built after the above VIN breakpoints have the new PCM calibration installed. |
On SOHC (LKO) engines with automatic transaxles, some owners may comment that the engine hesitates under heavy acceleration during engine warm - up (coolant temperature below 70°C ([158°F]). On SOHC (LKO) engines with manual transaxle, some owners may comment that the engine misses between 1500 - 2000 rpm in Neutral with engine at normal operating temperature.
Due to engine sensitivity to variations in cool ambient temperatures, along with Federal regulations that address spring and summer fuel grade volatility, initial start - up and warm - up driveability can be impacted.
For vehicles equipped with automatic transaxles, verify that the vehicle hesitates during heavy acceleration with the engine coolant temperature below 70°C (158° F). For vehicles equipped with manual transaxles, verify that the engine misses between 1500 - 2000 rpm in Neutral with the engine at normal operating temperature.
Important: Before installing the new engine calibration, make a note of the transaxle calibration installed, and downland the same transaxle calibration with the current engine calibration..
1994 New Calibration - SOHC (LKO) ENGINES | |
1394 | Automatic Transaxle |
1392 | Manual Transaxle |
To receive credit for this repair, submit a claim through the Saturn Dealer System as follows:
Case Type | Description | Labor Operation Code | Time |
VW | Make PDT (scan Tool) checks and Download PCM Calibration | T9647 | 0.4 hrs |