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Getting ready to scrap my 87 2.2 na Sundance... :angry2:

Two years ago I had a series of overheating problems which resulted in a new headgasket. I also put in a new CTS and themostat, and all has been well until today.

I was driving across town in warm weather, bordering on hot, but was keeping an eye on the temp gauge as I noticed it hit about 90 % before the Tstat opened, which is not normal. After that, it rarely got above about 65%, and I could see the Tstat doing its job. I arrived at my destination, backed into the stall, shut the car down and subsequently heard a "hissing" noise (no bubbling).

I popped the hood, and coolant appeared to be spraying out of the oilpan/block seam, near the alternator. The coolant trail on the ground indicated it began leaking immediately after I put it in reverse. Ironically, I had just filled the reservoir with coolant prior to this trip. I just had the oil pump replaced a few weeks ago. After it cooled, I parked it on a hill, removed the cap, turned the heater on and tried to bleed it, on the assumption air had somehow gotten into the system. Again, the Tstat didnt open until 80-90%, and I ended up with a boiling mess bubbling out of the filler neck. I replaced the cap and parked it, once again noticing that coolant appeared to be spraying out of the oilpan/block seam, near the alternator.


Do you think the jackets have blown? What should I be looking for to narrow down the cause?
 
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