1996 Chevy Lumina over heating

KMARTIN5360

MEMBER
1996 CHEVROLET LUMINA
6 CYL
FWD
AUTOMATIC
200,000 MILES

My lumina is doing the same thing as the man you have already spoken with. I bought a new thermostat and new radiator cap, when it gets hot it seems to be steaming from the heater hose (top) the end that is connected to the radiator. I am not losing alot of antifreeze just a couple of drips but I did also put stop leak in also. I am really tired of messing with this car. PLEASE HELP SOMEONE

1 Reply

ERNEST CLARK

MECHANIC
1,730 POSTS

First of all, "Stop Leak" is a no, no. That's snake oil in a bottle, and instead of "stopping a leak", it only clogs up your cooling system.

Now, if you have a leaking radiator hose, or a crack in the fitting, this will stop your cooling system from building up pressure, which it needs to keep the coolant from boiling. No matter how small the leak, you'll overheat.

If your radiator hose is old, buy a new one. If it's new, then remove it and take sand paper and clean the surface of the radiator inlet where the hose connects. Then make sure you install the hose clamp in the proper position (on the radiator side of the nipple) and tighten it down correctly. (Not too loose, not too tight)

Also, it the leak is fixed but you continue to experience overheating, the that "stop leak" has probably clogged up your radiator/heater core. You'll need to have your system back flushed and new coolant installed.

If I've helped you, please take the time to vote for me as my reputation pays my bills. Thanx, Ernest.