20chrome Posted September 1, 2007 Share Posted September 1, 2007 Hi. My 94 GS300 engine overheats only once in a while (once or twice a month at most). When this happens I stop shut off the car, let it stand for a while (30+ minutes) and then, drive again normal. When it overheats, the rediator reservoir is full to the cap and it boils or bubbles forcefully. Because this is so sporadic, I ignore to fix this problem but just keep close eye on engine temperture when driving. Is this head gasket problem? I once tried to drive very conservatively when this overheating was happening and I was able to drive 10 more miles in this situation. I did change the thermostat couple months ago. Did anyone have similar problem like this? Any help and insight is appreciated. Quote Link to comment Share on other sites More sharing options...
TRD911 Posted September 2, 2007 Share Posted September 2, 2007 yeap.. I had a peice of ...... buick. It would ONLY overheat on cold rainy days (less than 60f) It was a head gasket.. what a load of crap. I hated it. I actually just eventually just drove it over heating. Said F it. It got worse and worse so I took the heads off resurfaced and new gaskets and it ran great. Quote Link to comment Share on other sites More sharing options...
dcfish Posted September 2, 2007 Share Posted September 2, 2007 Hi. My 94 GS300 engine overheats only once in a while (once or twice a month at most).When this happens I stop shut off the car, let it stand for a while (30+ minutes) and then, drive again normal. When it overheats, the rediator reservoir is full to the cap and it boils or bubbles forcefully. Because this is so sporadic, I ignore to fix this problem but just keep close eye on engine temperture when driving. Is this head gasket problem? I once tried to drive very conservatively when this overheating was happening and I was able to drive 10 more miles in this situation. I did change the thermostat couple months ago. Did anyone have similar problem like this? Any help and insight is appreciated. Sporatic thermostat? Quote Link to comment Share on other sites More sharing options...
smooth1 Posted September 4, 2007 Share Posted September 4, 2007 You might have a bad radiator cap. If the cap isn't holding say 13 psi, it may be letting the fluid boil which would fill the reservior up. In any case, it's a $10 part and a really easy first step in determining the problem. Quote Link to comment Share on other sites More sharing options...
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