I have a 2003 Sante Fe and the other morning, after the car sat outside in a cold driving rain all night, I had trouble starting it. Once it started, it was idling fast and when I put my foot on the brake pedal I could hear a thump, thump, thump sound and the idle would slow way down but then go back up once I took my foot off the brake. I opened the hood and could clearly hear what sounds like air sucking. Almost like there was an air leak somewhere. I drove the car but it wouldn't go more than about 20mph at the most. I then disconnected the negative battery cable to reset the electronics and the car started right up and ran just fine. The next morning, however, after sitting in my garage all night, it once again wouldn't start and all the above symptoms returned. I again disconnected the battery terminal to get it to run and took it to my mechanic. He let it sit overnight outside his shop but when he started it this morning, it ran just fine. Any ideas?
Thanks in advance,
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