Why does my car temp go down?

Why does my car temp go down?

Thermostat Failure Thermostat valves can fail in one of three ways: open, closed or stuck halfway. A stuck-open thermostat will constantly send coolant through the radiator, regardless of its temperature, causing coolant temperatures to drop and the heater to malfunction while traveling down the road.

When do I stop at red light RPM drops?

But when i stop at light rpm drop to 500. And feels like its going to shit off. My car has 80455 miles. My car has an automatic transmission. This may be a sign of a failing idle air control valve.

What causes engine rpm to drop at stop light?

engine rpm drops or stalls at stop light on abrupt braking. Hi there. In many cases, the issue you’re talking about is caused by an ignition timing problem; typically related to a damaged crankshaft position sensor or trouble within your ignition system such as the coil or distributor.

Why is the temp on my radiator going up?

As the temp gauge rises, check to see if the radiator fan engages. If it doesn’t, there’a a problem in the fan circuit. This could be a bad fan motor, bad fan relay, bad coolant temp sensor for the fan, or a blown fuse for the fan circuit.

Why does the temperature rise when the car is not moving?

When you start driving air is flowing through the radiator and cooling the engine. The fans should be doing that when the car is not moving, but for some reason they’re not. Check the fuses for the fans first. If the fuses are OK you’ll have to start checking the fan relay, the wiring, and the fan motors themselves.

But when i stop at light rpm drop to 500. And feels like its going to shit off. My car has 80455 miles. My car has an automatic transmission. This may be a sign of a failing idle air control valve.

Why does my car stop at a stop light?

When stopped waiting at a stop light, the engine RPMs will drop a bit and it sometimes stalls out. This is a common sign of a dirty or failing idle air control valve. The idle air control valve reads the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and…

engine rpm drops or stalls at stop light on abrupt braking. Hi there. In many cases, the issue you’re talking about is caused by an ignition timing problem; typically related to a damaged crankshaft position sensor or trouble within your ignition system such as the coil or distributor.

When you start driving air is flowing through the radiator and cooling the engine. The fans should be doing that when the car is not moving, but for some reason they’re not. Check the fuses for the fans first. If the fuses are OK you’ll have to start checking the fan relay, the wiring, and the fan motors themselves.