93 Chevrolet Corsica-overheating problem

domsalla · 08-03-2006, 03:42 PM

Hi All! Can someone give me advice? I see a pattern of Corsica owners experiencing the the same problem!! My 93 Chevrolet Corsica runs great when traveling in constant speeds; however, it overheats in stop-and-go traffic and long idle positions (when waiting for a stop light to change). The thermostat light comes on and the guage begins to creep up to "Hot". When I park the car, steams comes out of the radiator cap area and radiator fluid flows from undernead my car. When the car cools, I replace it with fluid and then I'm good to go. But then I run into the same problem again -- overheating. I've had the radiator cap, relay switch, radiotor flush and radiator hoses replaced by a professional radiator shop and spent quite a bit of money on this problem and even brought it back to the mechanic to say that it's been fixed, but the problems still exists when I get into stop-and-go and idle only. I've learned to manipulate the problem by placing the gear shift in neutral when in idle positions and rev the motor in stop-and-go. I'm not going to take it back to the same mechanic and will most likely take it to another mechanic but with some suggestions of my on gathered from you folks. Any suggestions out there?? Marie

dai · 08-03-2006, 07:59 PM

it sounds like the thermostat may need replacing,if it is getting that hot you will damage the motor driving it in that condition

Bald Eagle · 08-03-2006, 08:22 PM

The t stat is probably ok if it does not overheat while driving. That indicates flow through the radiator with the t stat open. The most likely cause of overheating in stop and go driving is failure of the electric rad fan, followed bu a plugged, or partially plugged rad or a weak water pump. Flushing the rad will not usually repair a plugged rad. when the engine is hot, turn off the key and feel the temp. of the rad. it should be hottest at the top near the upper rad hose and uniformly cooler as you check lower. If there are any cold spots, you will need to replace the rad as there is no coolant flow in the cold areas.
Hope this helps. BTW. when it starts to overheat, check to make sure the fan(s) are running. If not, you now know where to start!

08-03-2006, 03:42 PM	#1 (permalink)
domsalla Registered User Join Date: Aug 2006 Posts: 1 OS: win2000	93 Chevrolet Corsica-overheating problem Hi All! Can someone give me advice? I see a pattern of Corsica owners experiencing the the same problem!! My 93 Chevrolet Corsica runs great when traveling in constant speeds; however, it overheats in stop-and-go traffic and long idle positions (when waiting for a stop light to change). The thermostat light comes on and the guage begins to creep up to "Hot". When I park the car, steams comes out of the radiator cap area and radiator fluid flows from undernead my car. When the car cools, I replace it with fluid and then I'm good to go. But then I run into the same problem again -- overheating. I've had the radiator cap, relay switch, radiotor flush and radiator hoses replaced by a professional radiator shop and spent quite a bit of money on this problem and even brought it back to the mechanic to say that it's been fixed, but the problems still exists when I get into stop-and-go and idle only. I've learned to manipulate the problem by placing the gear shift in neutral when in idle positions and rev the motor in stop-and-go. I'm not going to take it back to the same mechanic and will most likely take it to another mechanic but with some suggestions of my on gathered from you folks. Any suggestions out there?? Marie

08-03-2006, 07:59 PM	#2 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 56,678 OS: win 7 32x 64x rtm	it sounds like the thermostat may need replacing,if it is getting that hot you will damage the motor driving it in that condition __________________

08-03-2006, 08:22 PM	#3 (permalink)
Bald Eagle Registered User Join Date: Feb 2005 Location: Ontario Can. Posts: 37 OS: winXP sp2	The t stat is probably ok if it does not overheat while driving. That indicates flow through the radiator with the t stat open. The most likely cause of overheating in stop and go driving is failure of the electric rad fan, followed bu a plugged, or partially plugged rad or a weak water pump. Flushing the rad will not usually repair a plugged rad. when the engine is hot, turn off the key and feel the temp. of the rad. it should be hottest at the top near the upper rad hose and uniformly cooler as you check lower. If there are any cold spots, you will need to replace the rad as there is no coolant flow in the cold areas. Hope this helps. BTW. when it starts to overheat, check to make sure the fan(s) are running. If not, you now know where to start!