Replacing a water pump is only as challenging as getting to it. You should see the temperature dip as the water pump spools up. You can test this by putting the car in neutral or park and revving the engine to about 1000 RPM under the redline for a few seconds. When the car is overheating when idling the water pump is not able to move the coolant through the radiator and back to the engine. Solution: A bad water pump isn’t efficient. When the vehicle is idle, the water pump is turning slowly. As the engine rpm increases, so does the speed of the water pump. The water pump in your car is turned by the Cobalt’s engine accessory drive system. Here’s more on this: Chevy Cobalt: Bad Thermostat Diagnosis Most likely you’ll just need a ratchet, extension, and 10mm socket. You’ll need to replace it, which is about a 2/10 in mechanical difficulty. It usually takes an engine a while to overheat when it is full of coolant. Does the vehicle get hot within a few minutes of driving (and the coolant is full)? That could be enough to tell that the thermostat isn’t opening all the way. Solution: It can be tough to tell if a thermostat is bad without just replacing it. It’ll either be on the block or water pump. Your Cobalt’s thermostat controls when coolant does and doesn’t enter the engine. Here’s a good guide to troubleshooting a radiator fan. If they are, you’ll need to replace the fan. If it is not turning at all you know you have a bad fan.Ĭheck the fuse and fan relay to see if they are getting power. Solution: With the engine hot and idling (but not yet overheating) pop the hood open and see if the fan is turning. These fans are most important when the vehicle is idling. Most vehicles use electric fans to cool the radiator when it gets warm enough. If the coolant level appears to be fine, then the next easiest thing to look at is the fan. Here are the signs of a bad water pump in the Chevy Cobalt. This is often where the leak is coming from when there’s a puddle under the center of the engine bay and you don’t see a leak anywhere. This is often a hard one to see, because all of the accessories (alternator, power steering, serpentine belt) are going to obstruct your view. If one of these gaskets fail, then there’s going to be a leak.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |