Q: My upper radiator hose is hot and my lower radiator hose is cold ..my car is also overheating and my radiator fan is not on

asked by on July 21, 2017

My car is overheating my upper radiator hose is hot but my lower is cold and my radiator fan is not kicking on.. Help

My car has 225000 miles.
My car has an automatic transmission.

It sounds like you may have a faulty coolant fan relay. The coolant fan relay helps to maintain the proper coolant temperature by turning on and off at specific temperature thresholds. When this relay is not working properly, this can cause the fans to come on intermittently, stay on all the time or sometimes not at all. When this happens you will notice a temperature spike and drop occasionally as the fan comes on and off. The other possibility may be that the radiator may have some blockage as the upper hose is hot and the lower hose is cold, indicating that the coolant may not be ciculating properly. I would suggest having an expert from Your Mechanic come to your home to diagnose your cooling system.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

honda accord run hot radiator busted replaced but car wont start but tryes to crank.

One of the things that can happen when an engine overheats is head gasket failure. Your engine may sound different when you crank it trying to start it. You may find coolant on one or more spark plugs. A technician,...

Every time I push the gas pedal, the car doesn't move fast

Hello. If the transmission is suddenly acting up like this and giving you this code then you may have gotten a defective transmission, or most of the time this is either related to the wiring or a control module problem....

My car temperature guage goes up and down and yet there is water in the radiator and I just changed my gasket. 2007 Honda Accord

Hello. I would need to know if it was your head gaskets that you changed and if this was occurring before you did that. If the temperature is going up and down then you may have a defective thermostat, a...

Related articles

Top 10 Best-Selling Cars of 2016
Ford F-series pickup trucks, Toyota Camry, and Honda Civic are some of the best-selling cars of 2016 and all deliver on reliability and efficiency.
The Top 5 Selling Cars in Connecticut in 2012
Connecticut Connecticut offers plenty of rain and its fair share of snow during the winter months, which means drivers need vehicles that can handle these conditions. Top selling vehicles in previous years have included the Toyota Camry, Corolla and the...
2012 Mazda 3 vs. 2012 Honda Civic: Which One Should I Buy?
Compact cars are well-known for their cost-effectiveness, value and affordability as well as their small stature. In general, they make great commuter cars and are especially good for first-time cars for kids or college students heading out for the first...