new radiator, now engine overheats
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Northstar Engines and System Technical Discussion Discussion, new radiator, now engine overheats in Cadillac Engine Technical Discussion; I just perchased a new radiator for my 94 sls. when I installed it, the engine overheated. it seems like ...
  1. #1
    starfox86's Avatar
    starfox86 is offline Cadillac Owners Fanatic
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    new radiator, now engine overheats

    I just perchased a new radiator for my 94 sls. when I installed it, the engine overheated. it seems like the upper radiator hose isnt getting much pressure and the bottom is getting alot. my old radiator was holding a temp of 200-230, i think it was a little clogged because it would get to as much as 234 sitting still , but not any higher. i replaced it because there was a leak where the trans fluid would go in. so, is there something i needed to do after installing it , besides flushing the system? now, i dont have the tablets in , I was going to get them after i installed it.

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  3. #2
    VinnyT's Avatar
    VinnyT is offline Cadillac Owners Fanatic
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    Re: new radiator, now engine overheats

    Sounds like your thermostat is stuck closed. Did you check it when you changed the radiator? Is the top hose warm and the bottom hot? If it is, it is the stat.

  4. #3
    Dadillac's Avatar
    Dadillac is offline Cadillac Owners Connoisseur
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    Re: new radiator, now engine overheats

    It is very easy to install a thermostat the wrong way. Make sure that the stat has the spring end facing in towards the engine block, not the radiator.

    Don

  5. #4
    terrible one's Avatar
    terrible one is offline Banned
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    Re: new radiator, now engine overheats

    I'm going to agree with everyone else, and say it was the stat. Was it replaced along with the radiator? If so, I'm thinking you didn't install it right. If it wasn't, it could be a bad t-stat

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