I have a huge problem and i'm not sure what the problem is. I have a
91 3.8 V6. The problem first started when i noticed that there was no heat one day then the next day there was, the first thing i thought was the thermostat. just befor i changed it i could smell antifreeze in the car. then the car started smooking white smoke and condensation out of the tail pipe, and the smell of antifreeze. i changed the thermostate. NO CHANGE. Ineed help.You have a blown head gasket. This is EXTREMELY common on that engine. Check your oil; if you're lucky, it'll look ok. If it looks milky, you've probably already ruined the bearings in the engine. If so, you're toast.
CJB
A bad thermostat may have caused overheating that resulted in a blown head gasket. The problem is that a thermostat replacement will never repair an engine that is steaming out the tailpipe. Those engine had (still have?) head gasket problems. They are not cheap to replace. Once these engines have had a head gasket failure, there is a good possibility that it has experienced damage to the bottom end because of oilk contamination. Sorry for the bad news but, you are going to need at least a head gasket job to "git 'er done". Don't be surprised if you get the gaskets done and it loses a crank bearing within a few weeks.
Lugnut
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