Fuel Problems

1999 MAZDA 626
148,000 MILES • 4 CYL • FWD • AUTOMATIC
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WISHIKNEW
  • MEMBER
  • 1 POST
My car idles really low and dies on me frequently but can give it gas and it will stay running. I've had it put on diagnostics and the computer said it was the ERG, I replaced it, same problem occurred. I replaced the fuel filter, same problem. I've not replaced the fuel pump. Could it be the fuel pump or the fuel pump relay? Why does it keep dying? After the car sits all night the following day when started the car smokes for a min then clears up...smoke is light in color and looks kinda blue.
Mar 16, 2011 at 2:48 AM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
Check the fuel pump pressure before replacing it. Also, check for vacuum leaks and check the idle air control valve. If the check engine light is on, have the computer scanned for trouble codes.
Jun 15, 2011 at 4:20 AM
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