Overheating 02 LS
#11
I had the exact same problem last year and when I took it in my catalytic converter was acting up. Since yours is at 77000 miles you should be able to have it fixed for free at the chevy dealerbut you might check first cause the reason it was bad was the the head gasket on the rear had burst and it leaked antifreeze in to the converter causing it to get a thick coating inside. HoPe this helps
It doesn't sound like it would be the cat though because it's getting hot quickly.
#13
Join Date: Apr 2010
Location: Mentor, Ohio
Posts: 12,175
The recall/extended warranty on the cat was I think '00-'01 models. But even so, I believe that program is now expired (so even if you cat is one of the bad batch, you're on your own if I am correct).
I would not suspect the cat unless you also had performance problems.
I would not suspect the cat unless you also had performance problems.
#14
I bought the car used from an old good liar lol so as is no warrenty for this sucker. Had air in the system and water pump was bad, changed water pump bled system again and it will still get hot sometimes and now it has some smoke coming from the exaust but not all the time, the smoke is white but not very thick and smells of antifreeze. No water in the oil and no check enginge lights came on. Put it in the shop yesterday.
#15
Head Gasket?
#16
Join Date: Apr 2010
Location: Mentor, Ohio
Posts: 12,175
First the extended cat warranty from GM was regardless of factory warranty status.
Now, the bad news. You have a failing head gasket. End of story. Here's what going on:
- You end clue, white smoke from the exhaust, it's the result of anti-freeze burning in a cylinder
- Your temp problem and constant air in the system is compression gases from the cylinders PUSHING into the cooling system.
- It is possible for the head gasket to blow and you NOT see coolant in the oil (traces of coolant may be so low for that to result).
- Once the T-Stat opens, the air pocket just moves freely around the system (hence why the car does not appear to "overheat" any more), but the problem is still there.
Your water pump fail might be related to the head gasket. Since you are getting compression gases in the cooling system (which are making you air pockets) it's causing your cooling system to have too much pressure in it. The end result, eventually something will brake and that pressure will brake the weakest item. I had this problem on my 3100 powered Grand Am, by the time I found it to be a head gasket, it had blown the gasket for the side tank of my radiator!! When I changed my head gasket, the radiator swap was no big deal (I had changed the radiator a couple years prior and now had a lifetime warranty radiator, no cost swap for me).
I would recommend that you discontinue driving the car to prevent further damage.
Now, the bad news. You have a failing head gasket. End of story. Here's what going on:
- You end clue, white smoke from the exhaust, it's the result of anti-freeze burning in a cylinder
- Your temp problem and constant air in the system is compression gases from the cylinders PUSHING into the cooling system.
- It is possible for the head gasket to blow and you NOT see coolant in the oil (traces of coolant may be so low for that to result).
- Once the T-Stat opens, the air pocket just moves freely around the system (hence why the car does not appear to "overheat" any more), but the problem is still there.
Your water pump fail might be related to the head gasket. Since you are getting compression gases in the cooling system (which are making you air pockets) it's causing your cooling system to have too much pressure in it. The end result, eventually something will brake and that pressure will brake the weakest item. I had this problem on my 3100 powered Grand Am, by the time I found it to be a head gasket, it had blown the gasket for the side tank of my radiator!! When I changed my head gasket, the radiator swap was no big deal (I had changed the radiator a couple years prior and now had a lifetime warranty radiator, no cost swap for me).
I would recommend that you discontinue driving the car to prevent further damage.
#17
Yeah i'm not driving it, it's in the shop. I can do some of the small stuff like water pump,alt and changing the oil but i'm not comfortable doing the gasket. Do you guys think it would be best to change the LIM gasket at the same time, since the orignal ones are junk?
#18
Yeah i'm not driving it, it's in the shop. I can do some of the small stuff like water pump,alt and changing the oil but i'm not comfortable doing the gasket. Do you guys think it would be best to change the LIM gasket at the same time, since the orignal ones are junk?
#19
Join Date: Apr 2010
Location: Mentor, Ohio
Posts: 12,175
Yeah i'm not driving it, it's in the shop. I can do some of the small stuff like water pump,alt and changing the oil but i'm not comfortable doing the gasket. Do you guys think it would be best to change the LIM gasket at the same time, since the orignal ones are junk?
Just get the aluminum Fel-Pro gasket for the LIM, you'll thank me later.
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