A temp needle that climbs in traffic but settles at speed is a classic pattern with a short suspect list.
Airflow is the difference
At freeway speed, air rams through the radiator on its own. In traffic, your electric cooling fans have to do that job — so a car that only runs hot at stoplights usually has a fan problem: a dead fan motor, a failed relay, or a temperature sensor that never tells the fans to switch on. A weak water pump or a partially clogged radiator shows the same symptom.
Quick tips
- Watch the gauge; never let it reach the red before pulling over
- A/C on max forces the fans on — a useful roadside test
- Fan repairs are a common driveway fix; no shop visit needed
Need hands on the car instead of more reading? VIPCANIC comes to your driveway anywhere in the South Bay, 24 hours a day, call (310) 340-6775.
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