my car slows down and stop then starts right up again what is the problem? on 1998 Honda Prelude

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when driving my car will slow down and stop. I put car in drive and it startsright up.
(2) Answers
its the ignotical conversion compressor. there is a tiny fuel prodometer in the regulation devisor that switched on and off. when you hit pot holes, it sometimes switches to off in older cars. get that checkd asap