Sudden engine failure. I own a 99 Buick Park Avenue ultra that has about 65,000 miles on it and is well maintained. The car is only utilized about 6 months out of the year since we are snow birds having returned from the East 2 months ago. Last evening as I drove North and up one of the long hills on the toll rd 73 in orange county, ca I experienced the sudden and total loss of engine power while traveling between 65 and 70 mph. All electrical systems, headlights, dash lights etc stayed on and appeared normal. Fortunately the traffic was such that I was able to pull over to the side of the road, stop and turn on my hazard warning lights. I sat for a moment and then tried to restart the engine. The cranking appeared normal and the engine immediately started and the engine parameters, temperature, volts, etc appeared normal. I was surprised to say least but we decided to start moving again and proceeded to drive pretty much at normal speeds without a hiccup the 20 miles left to get home staying in the rh lanes for the most part. Getting back into the fast moving stream of traffic was somewhat hazardous in and of itself. Prior to this sudden failure there was no warning or change in performance. The only caveat to that is that it seems lately there has been a minor but noticeable sag or hesitation when starting to accelerate while in drive and at highway speeds.

- Los Alamitos, CA, USA