The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.
When the throttle position sensor fails, the engine's computer tends to overcompensate with fuel, leading black exhaust coming from the tailpipe. There is a strong possibility of engine misfires, and the check engine light will come on.
Throttle position sensors can also develop "dead spots," or certain places along the throttle curve where it doesn't get a reading. When this happens, the above symptoms can occur but then stop when you further press or let off the gas pedal.
When the vehicle speed sensor fails or the wiring harness prevents signal transmission, the speedometer is the first thing that will stop functioning properly. This can be an intermittent issue where the speedometer only works occasionally, the speedometer may cease all function, or the speedometer may read erratically or incorrectly. Also, the traction control and anti lock brake warning lights specific to each vehicle may be illuminated, depending on the design of those systems. You may notice the vehicle hesitate to accelerate, cruise control will not function properly, and the vehicle may not shift properly through all of the gears.
In the event that a wheel speed sensor fails, the ABS, traction control system (TCS) and manufacturer specific stability control system lights will illuminate, informing the driver that the systems are disabled. The vehicle will be more prone to tire slip, and normal driving patterns may need to be adjusted to correct for the loss of computer control. On older vehicle's, the speedometer can be affected, causing illumination of the check engine light as well.
A faulty cruise control module will simply result in deactivation of cruise control settings. This is because a detected error in the cruise control system could lead to hazardous driving conditions, so the module will be disabled, and the cruise control system warning light will be displayed. This will be a different message depending on make and model, and a warning light or message may be displayed on the driver instrument cluster.
To effectively diagnose the cruise control issue in a 1996 Chevrolet Impala, start with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Begin by inspecting the fuses associated with the cruise control system, as a blown fuse can often be the simplest explanation for malfunction. Next, assess the brake pedal and throttle body for any physical obstructions or damage, as these components play a crucial role in the cruise control's operation. It's also important to examine the cruise control lever or buttons for any signs of wear or malfunction, as issues here can prevent the system from engaging. If these initial checks do not reveal the problem, utilize a troubleshooting table to investigate the control module, paying close attention to the 10-pin plug and its wiring. Following a diagnostic flow chart tailored to the cruise control system can help pinpoint the root cause of the issue. Be vigilant for common problems such as sensor failures or throttle issues that may be affecting functionality. Finally, conduct a test procedure to confirm the module's operation while the engine is idling in Park, and remember that the powertrain control module (PCM) may inhibit cruise control under certain conditions, particularly if a diagnostic trouble code (DTC) is present. This methodical approach not only aids in identifying the issue but also ensures safety, as sudden cruise control failures can pose significant risks while driving.
When troubleshooting the cruise control system in a 1996 Chevrolet Impala, it's essential to understand the common problems that could lead to its failure. One of the first things to check is the fuse; a blown fuse can easily disrupt the entire system. Next, consider the brake pedal switch, as a faulty switch may prevent the cruise control from engaging, since it is designed to deactivate when the brake is pressed. Additionally, the speed sensor plays a crucial role in maintaining a constant speed, and if it is defective, the cruise control may not function properly. Another potential issue could be vacuum leaks within the system, which can lead to a loss of pressure and result in malfunction. Lastly, a defective cruise control module can also be a significant factor in the system's failure. By identifying these common problems, you can take the necessary steps to diagnose and potentially fix the cruise control system in your Impala, ensuring a smoother driving experience.
Addressing the non-functioning cruise control in a 1996 Chevrolet Impala should not be overlooked, as it can significantly impact your driving experience. While it may not pose an immediate safety risk, the convenience of cruise control is particularly beneficial during long drives, allowing for a more relaxed and comfortable journey. Ignoring this issue could lead to increased fatigue and discomfort, especially on highways where maintaining a constant speed is essential. Furthermore, a malfunctioning cruise control system may signal deeper electrical problems within the vehicle, which, if left unaddressed, could escalate into more serious and costly repairs. Simple fixes, such as cleaning or replacing the cruise control button, can often resolve the issue at a low cost, making it wise to investigate sooner rather than later. If the problem stems from more complex components like the control module or sensors, seeking professional help is advisable to ensure the system is restored to full functionality. In summary, while the urgency may not be critical, timely attention to the cruise control issue can enhance your driving comfort and prevent potential complications down the road.
Read about related problems experienced by other Chevrolet Impala drivers like you.
See what others are asking about their Chevrolet Impala. Get answers from RepairPal's community of auto experts and enthusiasts.
