Engine won't hold operating temperature. Temperature climbs to 1/2 gauge and heater works great. Then temp gauge drops and heater gets cold. Cycles back and forth like this without any overheating or coolant loss. Problem occurs in the shop and on the highway....

FIX posted 12/7/2000

iATN Members:
Login to view full TechHelp request
Auto Repair Pros:
Join iATN to read this TechHelp request
Vehicle Owners:
Find a nearby iATN member to repair your vehicle