My 1998 Accord has been completely dying when idling - although not everytime - and then will not start for 3-4 minutes afterward. Just completely shuts off. 'Check Engine' light is not coming on. Oftentimes the car will jerk (tachometer bouncing, going nuts) when driving - either before or after it shuts off. Happens in cold and hot weather. Diagnostics reveal nothing. Map sensor was replaced in January and seemed to work until late April. It appears that may have been luck. Very frustrating. Any thoughts??