2003 Pontiac Grand Am wiill not start

2003 PONTIAC GRAND AM
75,000 MILES • 6 CYL • FWD • AUTOMATIC
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BIGBOY49
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  • 1 POST
my car will not start when outside air temp. is below 50 degrees. above that it runs fine. i changed crank sensors, map sensor, wires, computer, tune up still will not start please help
Nov 4, 2009 at 9:41 AM
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RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
Do below and check what's missing fuel or spark

Get a starting fluid/ether/better off gas in a spray bottle and spray into the carb or the throttle body on an EFI. Did it start and die? If not disconnect a sparkplug wire or 2 and ground it to the engine -have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs,coil's resistances,cap and rotor /distributor pick-up coil, ignition control module, ECM,Ignitor camshaft and crankshaft sensors- Note: If it doesn't apply disregard it
Nov 4, 2009 at 10:22 AM
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