97 Monter Carlo 3.1 overheating

ANDYRISSO · 03-10-2008, 08:29 AM

Approx 2 weeks ago our 97 Monte Carlo with a 3.1 in it started overheating drastically. Nothing had been done to just prior to it that we think could've caused it. The next day I took it out around the block and in less that a mile it pegged the temp gauge. Upper hose was hot, lower hose was warm. Smaller hose coming off the "T" with the bleeder screw on the water pump was cold and no heat inside of the car.
I have since replaced the water pump, the thermostat, Had the system flushed (twice) and even replaced the radiator with a new one and am still having the same issues. It will blow hot hair for the first time it gets hot, but then cold air and the temp gauge still goes to the red.
I have bled the system numerous times and nothing, no fluids are leaking, no oil/water mix is apparent and plugs look clean when inspecting them. I also hear no leaks either by pressure or water. But since replacing the water pump, thermostat, and radiator have noticed that the bottom hose gets warmer now and if release some of the pressure from the cap, it blows into the overflow tank and thew water is warm.
Can my heater core be pugged?

03-10-2008, 08:29 AM	#1 (permalink)
ANDYRISSO Registered User Join Date: Mar 2008 Posts: 3 OS: win xp	97 Monter Carlo 3.1 overheating Approx 2 weeks ago our 97 Monte Carlo with a 3.1 in it started overheating drastically. Nothing had been done to just prior to it that we think could've caused it. The next day I took it out around the block and in less that a mile it pegged the temp gauge. Upper hose was hot, lower hose was warm. Smaller hose coming off the "T" with the bleeder screw on the water pump was cold and no heat inside of the car. I have since replaced the water pump, the thermostat, Had the system flushed (twice) and even replaced the radiator with a new one and am still having the same issues. It will blow hot hair for the first time it gets hot, but then cold air and the temp gauge still goes to the red. I have bled the system numerous times and nothing, no fluids are leaking, no oil/water mix is apparent and plugs look clean when inspecting them. I also hear no leaks either by pressure or water. But since replacing the water pump, thermostat, and radiator have noticed that the bottom hose gets warmer now and if release some of the pressure from the cap, it blows into the overflow tank and thew water is warm. Can my heater core be pugged?