Q: My car is overheating even after replacing waterpump and thermostat

asked by on October 12, 2016

My Jeep has been overheating after running for ten minutes. I've tried replacing the thermostat and water pump, but it still overheats. The water doesn't seem to be flowing correctly the thermostat and hoses connected to it will heat up, but the radiator will not heat up which by the way was replaced two months ago and is not leaking. I've checked the oil and it looks clean so I doubt that it is a blown head gasket. I am confused at what else it could be. What else should I check?
My car has an automatic transmission.

Car is overheating Inspection $94.99 - $114.99 Get a Quote

Hi. It sounds like the heater core is clogged and restricting the flow of coolant in the coolant system. There is also the possibility that the new radiator is defective and is causing the car to overheat. The head gasket could also be blown. Just because the antifreeze has not mixed with the oil doesn’t mean the head gasket is not leaking and is causing the Jeep to overheat. If you need to have this scoped out by an expert, a certified professional from YourMechanic can come to your location to diagnose the overheating problem and have this issue corrected.

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Slow leak in tire
Hello. It is common to lose a small amount of air over time. Usually about a pound or two of pressure a month is normal. If it is leaking faster than that then it amy have something stuck in the...
Car dies after a few minutes
There is a high possibility that your fuel injection unit "CFI" is malfunctioning. That is a common problem on your vehicle. If you would like help with this issue, consider YourMechanic, as a certified technician will be able to visit...
Engine oil light flickers when I make a stop
The light is flickering on and off due to the oil pressure being low below 4 psi at idle or the oil pressure sensor is not working correctly. The only way to know for sure is to do an oil...
Car idles rough, hesitate from a stop, shuts off going uphill
Hello there, this is a common fault on the Chevy K2500. There are many different possible causes for the engine to idle rough and have poor gas milage. The most common are the spark plugs (https://www.yourmechanic.com/services/spark-plugs-replacement), plug wires (https://www.yourmechanic.com/services/ignition-cable-spark-plug-wires-replacement), cap...
Loud knocking while driving straight and while turning left and right
Hello. If the knocking only occurs when the vehicle is moving then you either have an engine mount issue or a suspension problem. A knocking is usually the result of bad starts, a loose ball joint, or a bad bushing....
Temp Gauge marks higher than usual
Hi There, It sounds like your vehicle tends to overheat when sitting at an idle more often than when driving at highway speeds. It sounds like you may have a faulty coolant fan relay (https://www.yourmechanic.com/services/cooling-fan-relay-replacement). The coolant fan relay helps...
I was driving and my dash lights and everything turned off and eventually my car started losing power
It could be that your alternator has failed and for some reason you didn't get any warning lights. Usually you can drive a car with a bad alternator for a few hours before the battery voltage is too low to...
Hi I have a 2011 Infiniti ex35 has no leak but I just realize that the radiator bottle is empty and the coolant is low? What shoul
If your overflow coolant reservoir is getting empty you should keep the coolant full to prevent overheating the engine. The coolant may be low for a couple reasons. The first is you have a leak in the cooling system externally...
my car leaks coolant but is fine with water. it also recently had a new water pump and thermostat put in why would this happen?
You are probably just seeing "randomness" in the leak rate when you add water versus coolant; both will leak at the same rate. What you want to do, of course, is just simply get the leak pinpointed and repaired. If...

Related articles

The Best Used Cars to Buy for Senior Citizens
Everyone Everyone needs a way to get around. You need to get groceries, get to doctors’ appointments, visit with family and more. However, senior citizens have very different needs when it comes to buying a used car than other demographics....
Symptoms of a Bad or Failing AC Condenser Fan
Common signs include lukewarm air coming from the AC vent, the car overheating while idle, and a burning smell in the car.
Symptoms of a Bad or Failing Thermostat
Common signs include the temperature gauge reading being very high or changing erratically, engine overheating, and coolant leaks.