My Saturn ion won't start in cold weather. sfter waiting 10 mins it starts with no problem

First of all your service light came on so give it a service then have the service light reset then check the thermastac, water levels and the choke is working properly and all the elecric working parts are good

That sounds like a battery issue. Batteries have whats called CCA (cold cranking amps) it is the main thing to pay attention to. This is a measure of how much current the battery can provide at 0 deg F. Batteries work better when they are warm, so the colder it gets, the less current it can provide.

Starting an engine requires a lot of current, over a very short time. Meanwhile, cold engines are harder to start, requiring more power to get them going. So look at your battery and its CCA and since u said u bought the car a few years ago. You probably didnt replace the battery yet have u? Batteries usually have a life of 4-6 yrs only. Hope this helped

Hi Wlove, have the vehicle diagnostically scanned and I'm fairly sure it will record a defect with the temperature sensor. Have that relpaced and your problems should be over. Regards John

the car won`t start in cold weather even when plugged in alternator was changed 4 months ago just changed battery thinking it was the battery but seems like something is draining the battery overnight? Maybe its a bad connection??Plz help!!!

Leave the key in the on position for 10 minutes until the security light stops flashing. Turn the key off and wait 5 sec. If it starts and dies, leave the key on for 10 min. again. You might have to leave the key on 3 times. While you are doing this have a battery charger on it. If the battery goes dead. (You might have the key on for 30 min if you have to do it 3 times the battery might get low) you will have to start all over.

I had the same problem. Turns out the problem was part of a recall. Take it to a GM dealer to get the recall done. Haven't had a problem since.

LOL repeating questions. Its your ignition switch. its a common problem with ions ( I myself have a 04 ion and had it replaced twice in 3 years) repair is around 400 dollars with labor. Just google "ion not starting in cold weather" and youll get TONS of threads. No recall either its stupid

Sir,
You are suggested to check you plug wires they might be getting too much carbon on them and another thing is that you can get your car serviced and air filter clean if not done above 2 weeks.

saturn has a TSB#04-08-45-005D the ignition switches go bad usually when its cold outside and they dont let the car start,common ion issue,,you need a new ignition switch,,not the lock cylinder the switch its a little electric box on the end of the cylinder housing you need to replace that and reprogram the new one to the car,switch is like $40

The fix for this problem is well known, so is the cause. GM needs to step up in my opinion. You can fix it yourself if you're willing

http://moontaj.com/passlock