1991 Volvo 740 Backfiring

1991 VOLVO 740
300,775 MILES • 4 CYL • 2WD • AUTOMATIC
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OOKLATHEMOK
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  • 1 POST
My car had been running fine until a couple of days ago after a big rain storm. Now it has trouble cranking and shakes and backfires. It happened once before but only briefly just after a quick rain shower. Its been awhile since it rained but it still is doing it. I will get it moving but if I stop at a light it cuts off and wont crank back up unless it sits for awhile.
Nov 8, 2010 at 5:52 AM
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VOLVO SERVICE ADV
  • ✓ASE Certified Mechanic
  • 175 POSTS
  • ASE Certified Mechanic
ALL THE B230F ENGINES OR 240/740/940, IF YOU ARE HAVING AN ABNORMAL DRIVING CONDITION, START WITH REPLACING THE FUEL PUMP RELAY AND SUPPRESSION RELAY. THEN RE-EVALUATE WITH WHAT THE CAR DOES.
Nov 8, 2010 at 6:32 PM
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