Sounds like you have a loose or dirty battery cable connection, and connecting the jumper cable clamp disturbed it just enough to make it cause a problem. Had you not done that, the problem would have acted up anyway in the next few weeks or months.
I am not sure what you are describing when you said, "positive lead connected on my battery and both positive and negative lead on the other car". I read way too often every week about the really expensive damage done to multiple computers when people connect jumper cables incorrectly. To be sure you are doing it right, positive goes to positive, and negative goes to negative. The recommended procedure is to connect the positive cable to the positive battery post on both cars. Next, connect the negative cable to the negative battery post on one car, then connect the other end to a paint free point on the engine. The reason for that is there is going to be a small spark when the final connection is made, and you want that spark to not be near the battery. Batteries give off explosive hydrogen gas so we want to avoid causing sparks near it.
When you remove the jumper cables, there is going to be a small spark again when the first clamp is removed, so make that one the one on the engine. Once that is removed, none of the other clamps will make a spark when they are removed.
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Wednesday, December 28th, 2016 AT 11:09 AM
