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Hi, My 1990 american legacy wagon I've just bought has an over heating problem. It drives fine and the coolant temp stays slightly below the centre of the gage on all flat and downhill roads no matter how much you thrash it. It's only when I drive up a hill that it slowly starts to overheat. If I pull over and let it idle it will go back to the normal operating temp in less than a minute, as soon as I start driving up hill again it starts to overheat. It doesn't seem to matter how much I accelerate, it seems like the only thing that makes it heat up is going on the up hill slope. Does anyone have any clue what could cause this? Thanks
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I don't know an incredible lot about these cars, I just did an engine swap yesterday from 1991 Loyale into my 1987 GL. My '87 had almost 300,000 miles, still ran, but, it was time for a fresh motor, so, I put a 120,000 mile motor from my friend's totalled loyale in it. (It was rear ended) It started easily, ran great, accelerated easily, it was a fun little motor. But, I was driving and suddenly the motor just stopped, sputtered out. The engine was warmer than it should have been, so, I thought I might have lost head gaskets, but, no smoke, no coolant spew, and it didn't sound like I grenaded the motor. It just died and refused to start again. It turns over easily, no wierd noise or hesitation, it just won't start. I checked the oil when it died and it didn't look like milkshake (when coolant enters oil). So, I don't think it's headgaskets. I thought maybe I lost a timing belt, but, if I remove my distributor cap the distributor still rotates when I turn the engine over, which indicates timing. I know these cars have two timing belts, so, could I have lost te passenger side belt? I kind of think it would run, but, just run like spoob with half the timing. I don't know though. Anybody have any answers?