2003 Mercury Sable Car wont start

Tiny
LEFTHANDLOU
  • MEMBER
  • 2003 MERCURY SABLE
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 85,000 MILES
I thought it was the ignition key. So I replaced it. The battery is good. The car was running fine then went to start it and nothing. Checked the ignition fuses they are fine. What else can it be. How do I check the ignition switch? Were is it located?
Friday, April 16th, 2010 AT 6:23 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Pick your symptom:

**Cranks but no start condition:

Fuel and Spark:
Get a helper disconnect a sparkplug wire or 2 and ground it to the engine at least 3/16 away from ground -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, distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it.

**No crank at all/nothing/nada:

Could be the starter, starter relay, clutch switch/park and neutral switch and ignition switch assuming the battery and connections are good.
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Friday, April 16th, 2010 AT 6:47 PM

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