Sounds like your tranny is flaring (skipping gears). You still didn't say from what gear to what gear......

Most of these symptoms indicate a vacuum leak. You may also have vacuum-driven parts that are not necessary such as egr, etc but still are connected. In my 84D, I found that removing and sealing the vac lines to unnecessary accessories corrected the flaring and shifting issue.

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2007 Honda Accord EX
2007 Honda Accord SE V6
96 C220
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85 300D - Found Another Home
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84 Cressida
82 Vanagon
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