6th Gen ('00-'05): Overheating Engine and no heat.
#1
Overheating Engine and no heat.
Looking for opinions on what could be causing my issues. I have a ’04 Monte Carlo and our issues began with no longer getting heat through the vents while the heater was running. We had the car cooling system flushed and filled. Checked the air mix doors and they move just fine, tested the temp controls on the dash and they work fine. Now one month later the car is overheating. I had a friend “mechanic” come by and he checked several things. Here is the results of his visit. Top radiator hose gets hot, bottom radiator hose is cool to the touch, disconnected heater core lines and there is no flow through the lines. Also, the car was about a gallon low on antifreeze. Best guess is the water pump is faulty IE no blades to move the water. What is your opinions? The second concern is where did I lose that much Antifreeze?
#2
Hi 'Doug & Welcome to the Monte Carlo Family.
Sorry to read about your heat problem. I'm not a tech, but have you checked or replaced your thermostat ?
Please check back to see what our expert tech/mechanic's post on your problem.
Also, use our MCF Search engine to explore same or similar problems. Good Luck
p.s. Is your engine a 3.4L or 3.8L ? How many miles ? Any modifications ?
Sorry to read about your heat problem. I'm not a tech, but have you checked or replaced your thermostat ?
Please check back to see what our expert tech/mechanic's post on your problem.
Also, use our MCF Search engine to explore same or similar problems. Good Luck
p.s. Is your engine a 3.4L or 3.8L ? How many miles ? Any modifications ?
#3
well maybe it's the thermostat ?
Thx for the reply, I guess not knowing the flow direction of the cooling system I figured if the top hose was hot then the thermostat was opening just fine. If I am wrong then that would make complete since. Hmm.
#4
You're Welcome Doug, keep checking back & review what our member's post. Below may help (?) GOOD LUCK
How to Know If Your Car Thermostat Is Bad | eHow
How to Know If Your Car Thermostat Is Bad | eHow
How to Tell If a Water Pump Is Going Out- How to Know If Your Car Thermostat Is Bad
- What Are the Symptoms of a Leaking Water Pump?
- How to Tell If a Car's Water Pump Is Bad
- How to Replace the Water Pump on a 1997 Chevy Lumina Ls 3.1 V6
- Mazda 626 Water Pump Replacement
- How to Tell When a Fuel Pump Needs to Be Replaced
#5
There is a chance that when the new antifreeze was put in, the system wasn't bled properly of air, causing an air bubble in the system which would block flow and cause the no heat issue, also would explain the lack of antifreeze. Make sure you check the system for leaks, just in case, also check your oil, make sure it doesn't look like a milk shake as this would mean coolant is getting into the bottom of the motor and you are going to have some serious issue with the motor.
#6
There is a chance that when the new antifreeze was put in, the system wasn't bled properly of air, causing an air bubble in the system which would block flow and cause the no heat issue, also would explain the lack of antifreeze. Make sure you check the system for leaks, just in case, also check your oil, make sure it doesn't look like a milk shake as this would mean coolant is getting into the bottom of the motor and you are going to have some serious issue with the motor.
Also, it is the 3.4L Engine, sorry Mike that I overlooked the question.
#7
Good Morning Doug,
I hope that more member's see's your thread & can assist.
I don't know 'if the below will help, but it might ?
Good Luck on resolving this problem.
I hope that more member's see's your thread & can assist.
I don't know 'if the below will help, but it might ?
Good Luck on resolving this problem.
Here's an alternative method for filling and bleeding coolant on a Chevy 3.4L V6 engine. Similar to bleeding with the engine running, this method provided in instruction manuals, shows how to expel air through the bleeder valves on top of the engine, until the air is gone and coolant remains. Give this a try and subscribe to our channel for more "how to" repair videos.
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