1998 Dodge Truck cruise control

1998 DODGE TRUCK
10,900 MILES • V8 • 4WD • AUTOMATIC
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DONNIE LAWS
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  • 2 POSTS
My 98 Dodge 1500 pickup cruise control will not hold to set speed when going up hill or down. It works fine on level road,but drops sharply on grades.
Jul 27, 2009 at 10:21 AM
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DR LOOT
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  • 2,311 POSTS
I believe it may be a vacuum leek, check all your hoses make sure they are in good condition and your connections, due to the reason that when you go up hill you lose vacuum, and also going downhill you lose vacuum also, you also may have a bad diaphragm in your cruise control unit unless its computer-controlled?
Jul 31, 2009 at 9:43 PM