I putting this information here to answer the question I've seen posted here two to three times a week, The Question is 'Why does the reference voltage to the Coolant Temp Sensor reference voltage toggle on and off if you check it with a DVOM or Lab Scope ...

FIX posted 4/27/1999

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