Why does my thermometer stay very low?
Asked by acuraintel Apr 03, 2012 at 07:15 PM about the 1998 Acura Integra LS Sedan FWD
Question type: Maintenance & Repair
The thermometer peaks at about a quarter. Shortly after this, my gas mileage plummeted. What's going
on?
1 Answer
aztec626bf answered 12 years ago
Sounds like you have a thermostat that is stuck open. The engines sensors and computer are calibrated to give best efficiency at normal operating temp. With the car running and warmed up as much as it will check the temp of the top radiator hose it should be very hot to the touch 185-195 degrees. If the thermostat is stuck open the hose will be warm but not hot.
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