07-18-2016, 09:55 AM
If you have the same cruise control as I do, I would first adjust the sending unit. There are two sending units on a flywheel like disk with large holes drilled around the outside edge on the driveshaft. One sensor is located on the bottom and one on the top. They should be set to the thickness of a credit card (0.030 inches). Using feeler gauges is a bit tricky because the sensors are magnetic and the gauge will 'stick' to the sender unit.
First check the bolts that hold the disk to the flywheel. Mine were loose and allowing the disk to flex. If you have a VMSpc unit and you see irregularity in the cruise control speed setting, it likely is the sensor either failing or out of adjustment or the disk plate flexing due to loose bolts. As I recall, the speedometer sensor is white with blue or green stripes and the odometer is yellow with blue or green stripes. I believe the speedometer sensor is an ISPro R-8932 and the cruise control sensor is likely the same.
First check the bolts that hold the disk to the flywheel. Mine were loose and allowing the disk to flex. If you have a VMSpc unit and you see irregularity in the cruise control speed setting, it likely is the sensor either failing or out of adjustment or the disk plate flexing due to loose bolts. As I recall, the speedometer sensor is white with blue or green stripes and the odometer is yellow with blue or green stripes. I believe the speedometer sensor is an ISPro R-8932 and the cruise control sensor is likely the same.