1993 Dodge Grand Caravan Cruise Control Isn't Working

Fixing Cruise Control Issues in the 1993 Dodge Grand Caravan

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Reviewed by
Andrew Hajjar
Written by RepairPal Car Genius
Updated January 14, 2025
0%
30% chance it's the
Sensor
0%
25% chance it's the
Control Module
0%
25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 1993 Dodge Grand Caravan cruise control isn't working are failed control module, sensor or switch issues, or throttle actuation problems.
  • Sensor: A faulty or malfunctioning sensor can lead to incorrect readings, causing issues with engine performance or other systems relying on accurate data.
  • Control Module: A faulty control module can lead to erratic vehicle behavior or failure of various electronic systems due to improper signal processing.
  • Throttle: A faulty throttle body or a defective accelerator pedal position sensor may be causing inconsistent throttle response.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 1993 Dodge Grand Caravan cruise control isn't working?

Common Repairs

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.

The cruise control switch can cause complete failure of the cruise control feature, but in a lucky scenario only partial functionality will be lost. This means that the cruise control may come on, but that it will not increase in speed automatically, or the cancel button does not work leading the driver to cancel cruise control with the foot brake. In some vehicles, the cruise control light may illuminate, or a warning message may be displayed due to lack of functionality.

What are the initial diagnostic steps to troubleshoot the non-functioning cruise control on a 1993 Dodge Grand Caravan?

To effectively troubleshoot the non-functioning cruise control on your 1993 Dodge Grand Caravan, start with the simplest checks before moving on to more complex diagnostics. Begin by inspecting the cruise control fuse; a blown fuse can easily disrupt the system's operation. Next, examine the cruise control switch located on the steering wheel, as a malfunctioning switch may prevent the system from engaging. It's also crucial to verify that your brake lights are operational, since a faulty brake light switch can inadvertently disable the cruise control. Additionally, check the vacuum lines associated with the cruise control system for any signs of leaks or damage, as these can significantly impact performance. Finally, if the previous steps do not reveal the issue, test the cruise control module itself, as a defective module may require replacement to restore functionality. By systematically following these steps, you can efficiently diagnose and address the problems affecting your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 1993 Dodge Grand Caravan?

When dealing with a non-functional cruise control system in a 1993 Dodge Grand Caravan, it's essential to consider several common problems that could be at play. One of the first things to check is the fuse associated with the cruise control system; a blown fuse can easily disrupt its operation, and replacing it is a straightforward fix. Additionally, the cruise control switch located on the steering wheel may be faulty, which can prevent the system from engaging properly. If the switch appears to be in good condition, inspecting the vacuum lines for leaks is crucial, as any disruption in the vacuum system can hinder functionality. Another potential culprit is the speed sensor; if it is malfunctioning, it may not relay the correct speed information to the cruise control system, necessitating its replacement. Lastly, the brake light switch should be examined, as a faulty switch can cause the cruise control to disengage unexpectedly. By systematically checking these components, you can effectively troubleshoot and potentially restore the cruise control functionality in your vehicle.

How urgent is it to address the non-functioning cruise control in a 1993 Dodge Grand Caravan?

When it comes to a non-functioning cruise control in a 1993 Dodge Grand Caravan, the urgency of addressing the problem cannot be overstated. While it may not seem like an immediate emergency, the implications of ignoring this issue can lead to significant safety risks. A malfunctioning cruise control system can result in erratic speed changes, making it difficult for drivers to maintain a steady pace, particularly during long highway drives. This unpredictability can increase the likelihood of accidents, as drivers may struggle to react appropriately to sudden speed fluctuations. Additionally, the absence of cruise control diminishes driving comfort, especially on extended journeys where maintaining a relaxed posture is crucial. Therefore, it is advisable to have the system diagnosed by a qualified mechanic to pinpoint the underlying cause of the malfunction. By addressing the issue promptly, you not only enhance your driving experience but also prioritize safety on the road, making it a worthwhile endeavor for any DIY enthusiast.

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