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Thread: 84 3.8L Low on Power

  1. #51
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    0-60 in around 10 seconds? Quarter mile in about 17 seconds? Those are the normals for the 3.8 in these cars.

  2. #52
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    Quote Originally Posted by EricCoolCats View Post
    0-60 in around 10 seconds? Quarter mile in about 17 seconds? Those are the normals for the 3.8 in these cars.
    Yes. I am aware but still am pretty sure something is wrong. I had and 84 and an 86 back in the early 90s which I drove gen of thousands of miles and don't recall them being so weak. I've had this car for 3 years but don't drive it much. Maybe I'll time a 0-60 run but I bet it's longer than 10.

  3. #53
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    Have you checked the timing chain for play if it's stretch too much will throw the valve timing out enough to lose power,compression test? and how old are your o2 sensors may still be working but get slow at responding changed​ mine very pleased with the result but never threw a code.

  4. #54
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    Quote Originally Posted by mr glee View Post
    Have you checked the timing chain for play if it's stretch too much will throw the valve timing out enough to lose power,compression test? and how old are your o2 sensors may still be working but get slow at responding changed​ mine very pleased with the result but never threw a code.
    O2 sensors are original. Timing chain is too but I know that both of my 3.8 from back in the day had over 100k on them and we're very worn out motors but ran stronger than this motor which has 70k miles, has no blow by evident in air cleaner housing?".

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