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  1. Check Engine Light Help

    3rd Gen
    Hey guys, I just removed the AC lines from my 89 Si 4WS today. After the car was running for about 10 minutes, the check engine light came one. It has never come on before so I figured it must be something to do with the A/C. The only sensor (at least I think it's a sensor) that I found was...
  2. Check Engine Code

    5th Gen
    The other night my check engine came on again. I had the code read and found out it was a P0420 or "Catalyst System Efficiency Below Threshold (Bank 1)". I was wondering if anyone has an idea of what might be wrong. The car is running perfectly. The only thing I did to it recently was put some...
  3. 2000 type SH problem please help...

    5th Gen
    Hey guys, I just bought a 2000 Honda Prelude type SH. I was driving home from school tonight, when both my check engine, and ATTS light came on. I was hoping you guys would be able to tell me if the ATTS would cause the check engine to come on, and if I should still drive my car. I was hoping...
  4. Engine troubles for an amature - any and all help is wonderful!

    5th Gen
    Okay, I'll try not to make this too long of a story. First and foremost, I want to preface saying that I have a verrrrry limited knowledge of vehicles - in fact this is my first time ever doing anything under the hood except staring and at the engine. With that in mind, any answers to this...
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