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2005 Saturn Ion Intermittent starting solution
We have struggled for years with intermittent starting once the temperature gets below 30F. We've had it several places for service, but FINALLY have it fixed. There was a recall on the ignition switch a few years ago. That's the culprit. We actually had it replaced 2 times - something faulty with the manufacture of the part? Anyway, 2nd time has been the charm (knock on wood). Car starts every day for over a month, even during the polar vortex with temps 20 below F. Hope this helps!