My 1990 GTR was fine a few weeks ago, only work that was done was that we removed the airbox and both AFMs and tightened down a loose bolt on the charge pipe to fix a leak. Put everything back together, warmed it up for about 20 minutes (cold here now), then took it out. When coming up to a stop sign, rather briskly, the 4wd and Anitlock dash lights came on followed by a complete loss of power. Car started right back up just fine and does not lose power when its moving forward, only when stopping, and its random. More frequently than not though. Any thoughts on what the issue could be? Car is all stock.