Photo: Paul Chinn / The Chronicle  Passengers squeeze into a crowded westbound train at the West Oakland BART Station.  Passengers squeeze into a crowded westbound train at the West Oakland BART Station.  Workers inspect a train at the BART maintenance facility in Concord, Calif., on Thursday, March 17, 2016.  Workers inspect a train at the BART maintenance facility in Concord, Calif., on Thursday, March 17, 2016.  BART maintenance facility in Concord, Calif., on Thursday, March 17, 2016.  BART maintenance facility in Concord, Calif., on Thursday, March 17, 2016.  BART Transit Vehicle Electronic Technician Jay Clemons inspects thyristors at the BART maintenance facility in Concord, Calif., on Thursday, March 17, 2016.  BART Transit Vehicle Electronic Technician Jay Clemons inspects thyristors at the BART maintenance facility in Concord, Calif., on Thursday, March 17, 2016.  Kozo Kimura of Millbrae leans over the train tracks to look for the next approaching train at Embarcadero Station on Friday, March 18, 2016 in San Francisco, California.  Kozo Kimura of Millbrae leans over the train tracks to look for the next approaching train at Embarcadero Station on Friday, March 18, 2016 in San Francisco, California.  Commuters leave the Montgomery BART station during the morning commute in San Francisco, California, on monday, february 29, 2016. BART will be testing offering incentives for commuters riding outside during the busiest time of the morning.  Commuters leave the Montgomery BART station during the morning commute in San Francisco, California, on monday, february 29, 2016. BART will be testing offering incentives for commuters riding outside during  Workers inspect a train at the BART maintenance facility in Concord, Calif., on Thursday, March 17, 2016.  Workers inspect a train at the BART maintenance facility in Concord, Calif., on Thursday, March 17, 2016.  Customers line up to board free shuttle busses at the Pittsburg/Bay Point BART station in Pittsburg, CA Thursday, March 17, 2016. Free shuttle bus service was offered as BART service was out between the Pittsburg/Bay Point and Concord stations due to an electrical problem.  Customers line up to board free shuttle busses at the Pittsburg/Bay Point BART station in Pittsburg, CA Thursday, March 17, 2016. Free shuttle bus service was offered as BART service was out between the  Customers line up to board free shuttle busses at the Pittsburg/Bay Point BART station in Pittsburg, CA Thursday, March 17, 2016. Free shuttle bus service was offered as BART service was out between the Pittsburg/Bay Point and Concord stations due to an electrical problem.  Customers line up to board free shuttle busses at the Pittsburg/Bay Point BART station in Pittsburg, CA Thursday, March 17, 2016. Free shuttle bus service was offered as BART service was out between the  BART and AC Transit officials help customers board shuttle busses at the Pittsburg/Bay Point BART station in Pittsburg, CA Thursday, March 17, 2016. Free shuttle bus service was offered as BART service was out between the Pittsburg/Bay Point and Concord stations due to an electrical problem.  BART and AC Transit officials help customers board shuttle busses at the Pittsburg/Bay Point BART station in Pittsburg, CA Thursday, March 17, 2016. Free shuttle bus service was offered as BART service was  BART Transit Vehicle Electronic Technicians Jay Clemons, (left) and Timothy Ryan inspect thyristors at the BART maintenance facility in Concord, Calif., on Thursday, March 17, 2016.  BART Transit Vehicle Electronic Technicians Jay Clemons, (left) and Timothy Ryan inspect thyristors at the BART maintenance facility in Concord, Calif., on Thursday, March 17, 2016.  BART maintenance facility in Concord, Calif., on Thursday, March 17, 2016.  BART maintenance facility in Concord, Calif., on Thursday, March 17, 2016.  Workers inspect a train at the BART maintenance facility in Concord, Calif., on Thursday, March 17, 2016.  Workers inspect a train at the BART maintenance facility in Concord, Calif., on Thursday, March 17, 2016.  BART Transit Vehicle Electronic Technicians Jay Clemons, (right) and Timothy Ryan inspect thyristors at the BART maintenance facility in Concord, Calif., on Thursday, March 17, 2016.  BART Transit Vehicle Electronic Technicians Jay Clemons, (right) and Timothy Ryan inspect thyristors at the BART maintenance facility in Concord, Calif., on Thursday, March 17, 2016.  BART maintenance facility in Concord, Calif., on Thursday, March 17, 2016.  BART maintenance facility in Concord, Calif., on Thursday, March 17, 2016.  Dave Hardt, BART Chief Mechanical Officer, talks about maintenance issues at the BART facility in Concord, Calif., on Thursday, March 17, 2016.  Dave Hardt, BART Chief Mechanical Officer, talks about maintenance issues at the BART facility in Concord, Calif., on Thursday, March 17, 2016.  Mauman Khizav of Pittsburg checks his phone after boarding a shuttle bus at the Pittsburg/Bay Point BART station in Pittsburg, CA Thursday, March 17, 2016. Free shuttle bus service was offered as BART service was out between the Pittsburg/Bay Point and Concord stations due to an electrical problem.  Mauman Khizav of Pittsburg checks his phone after boarding a shuttle bus at the Pittsburg/Bay Point BART station in Pittsburg, CA Thursday, March 17, 2016. Free shuttle bus service was offered as BART service  BART Transportation Supervisor Phaethon Brown, left, helps customers board a free shuttle bus at the Pittsburg/Bay Point BART station in Pittsburg, CA Thursday, March 17, 2016. Free shuttle bus service was offered as BART service was out between the Pittsburg/Bay Point and Concord stations due to an electrical problem.  BART Transportation Supervisor Phaethon Brown, left, helps customers board a free shuttle bus at the Pittsburg/Bay Point BART station in Pittsburg, CA Thursday, March 17, 2016. Free shuttle bus service was  Customers line up to board free shuttle busses at the Pittsburg/Bay Point BART station in Pittsburg, CA Thursday, March 17, 2016. Free shuttle bus service was offered as BART service was out between the Pittsburg/Bay Point and Concord stations due to an electrical problem.  Customers line up to board free shuttle busses at the Pittsburg/Bay Point BART station in Pittsburg, CA Thursday, March 17, 2016. Free shuttle bus service was offered as BART service was out between the  Bus driver Victor Caires of County Connection greets customers boarding his free shuttle bus at the Pittsburg/Bay Point BART station in Pittsburg, CA Thursday, March 17, 2016. Free shuttle bus service was offered as BART service was out between the Pittsburg/Bay Point and Concord stations due to an electrical problem.  Bus driver Victor Caires of County Connection greets customers boarding his free shuttle bus at the Pittsburg/Bay Point BART station in Pittsburg, CA Thursday, March 17, 2016. Free shuttle bus service was  Customers line up to board free shuttle busses at the Pittsburg/Bay Point BART station in Pittsburg, CA Thursday, March 17, 2016. Free shuttle bus service was offered as BART service was out between the Pittsburg/Bay Point and Concord stations due to an electrical problem.  Customers line up to board free shuttle busses at the Pittsburg/Bay Point BART station in Pittsburg, CA Thursday, March 17, 2016. Free shuttle bus service was offered as BART service was out between the  BART and AC Transit officials help customers board shuttle busses at the Pittsburg/Bay Point BART station in Pittsburg, CA Thursday, March 17, 2016. Free shuttle bus service was offered as BART service was out between the Pittsburg/Bay Point and Concord stations due to an electrical problem.  BART and AC Transit officials help customers board shuttle busses at the Pittsburg/Bay Point BART station in Pittsburg, CA Thursday, March 17, 2016. Free shuttle bus service was offered as BART service was  Customers line up to board free shuttle busses at the Pittsburg/Bay Point BART station in Pittsburg, CA Thursday, March 17, 2016. Free shuttle bus service was offered as BART service was out between the Pittsburg/Bay Point and Concord stations due to an electrical problem.  Customers line up to board free shuttle busses at the Pittsburg/Bay Point BART station in Pittsburg, CA Thursday, March 17, 2016. Free shuttle bus service was offered as BART service was out between the  A southbound BART train arrives at the Coliseum station as an Oakland Airport Connector train arrives at the same time in Oakland, Calif. on Friday, March 18, 2016.  A southbound BART train arrives at the Coliseum station as an Oakland Airport Connector train arrives at the same time in Oakland, Calif. on Friday, March 18, 2016.  Passengers transit to and from Oakland International Airport on the BART Oakland Airport Connector line in Oakland, Calif. on Friday, March 18, 2016.  Passengers transit to and from Oakland International Airport on the BART Oakland Airport Connector line in Oakland, Calif. on Friday, March 18, 2016.
BART riders — fed up with delays that escalated this week due to a mysterious glitch that paralyzed scores of train cars — are ready to jump into action if it means they’ll get home in time for dinner.  Frustrated passengers quickly rallied, at the driver’s urging, in a bid to wrestle the offending door shut.  [...] he fixed the rubber seal, repeatedly, to the rousing applause of the entire car, saving hundreds of people from a lengthy wait for a new train on a Friday night.