Temperature gauge going down while driving

Asked by Jan 18, 2017 at 04:36 PM about the 1999 Volkswagen Jetta

Question type: Maintenance & Repair

when warming up it's  normal until I get on the
road then it drops down ????

2 Answers

119,915

Check the coolant level but I think you need a new thermostat.

1 people found this helpful.
12,945

depends on the air your driving into. If the electric fan is not working which it likely is not it won't keep the car at the proper idle temp. Regular temp for an audi is betwen 90-100 anything over that is over heating. But as F_O_R suggested its possible the thermostat is acting up. If that is the case it would be a good time to do a timing belt, water pump, thermostat, pulleys and hardware change.

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