6 Causes Your Temp Gauge Goes Up And Down Cost How To Fix

6 Causes Your Temp Gauge Goes Up And Down Cost How To Fix Youtube Here is a more detailed list of the reasons why your car temperature gauge goes up and down: 1. bad thermostat. the thermostat is used to regulate the temperature of the coolant. if it starts to fail, it can act erratically, causing the gauge to jump up and down. once it goes bad, it will no longer act this way. Amzn.to 43i0htt all in one obdii car scanner in this video we examine the issues that lead to temperature gauge problems. we also go over the sig.

6 Reasons Your Car S Temperature Gauge Fluctuates Up And Down A common reason your car temperature gauge goes up and down, and no heat is emitted, is that your cooling system is faulty. you may want to check out clogged components such as the heater core, radiator hose, coolant level, thermostat, or water pump. the coolant passageway might be blocked with sediments or rust. A healthy engine should run just over 200 degrees. if it runs much cooler than this, the pcm will throw a p0128 or a p0125 code, pointing to the engine thermostat, so watch for this. usually, the ect gauge reads from a different sensor than the fuel injection computer (pcm), but not always. sometimes the pcm reports the temperature to a network. Erratic temperature fluctuations could be caused by failed fan resistor or relay. a relay controls the power of the cooling fan, while the resistor controls when the fan turns on or off. in the first case, the fan can turn on and off randomly, stay on all the time or fail to turn on at all. in the other case, the fan can randomly turn on and off. You can do this by letting the engine idle and observing if the fan turns on. if it doesn't, check the fan motor, relay, and temperature switch for faults. check for wiring issues: examine the wiring connections between the temperature sensor, gauge, and instrument cluster. look for loose or corroded connections, damaged wires, or blown fuses.

Car Temperature Gauge Goes Up And Down While Driving Here S Why Erratic temperature fluctuations could be caused by failed fan resistor or relay. a relay controls the power of the cooling fan, while the resistor controls when the fan turns on or off. in the first case, the fan can turn on and off randomly, stay on all the time or fail to turn on at all. in the other case, the fan can randomly turn on and off. You can do this by letting the engine idle and observing if the fan turns on. if it doesn't, check the fan motor, relay, and temperature switch for faults. check for wiring issues: examine the wiring connections between the temperature sensor, gauge, and instrument cluster. look for loose or corroded connections, damaged wires, or blown fuses. Before you assume the thermostat must be the reason your engine is overheating, double check the coolant level in your cooling system. with the engine cold, you can open the radiator cap or the overflow bottle to verify the coolant level. if the level is below the full mark, add coolant until the level reaches the full “cold” mark. Let the car’s coolant cool for 15 to 20 minutes. for better clearance, lift up the front end of your vehicle. remove the radiator cap. drain the radiator, according to instructions in your car.