Join Date: Sep 2009
Location: Central Oreogn
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Cold Start Trouble
My 2005 F250 6.0 has been great so far. The PO suggested that when cold weather hit, I might need new batteries, since the two in the truck were the originals. I wasn't too worried, but planned to spend a couple hundred dollars when the time came.
So, a few days ago, it got cold down to the mid-twenties. The truck was parked outside, but I plugged the block heater in (on a timer) set to run from 2:30 am. I usually leave around 5:30, so I figured 3 hours should do the trick.
I ended up NOT driving the truck that morning, so the timer shut off the block heater around 6:00. I ended up home early that afternoon and could not start the truck. It was about 45 degrees out. The truck would turn over okay, and once or twice, it caught and fired for a few seconds, then would die. All this time, it was shaking hard.
Finally, it was obvious that I had killed the battery. My neighbor (Dodge with a Cummins) got home and offered his assistance (with a big smirk on his face). We pushed my truck away from the house and jumped it. It started, ran rough for about 30 seconds, spewing lots of smoke, then settled down and idled fine. I let it run for a few minutes, and went and had the batteries tested (one shot, one was okay) and ended up with 2 brand new batteries. So, all seemed okay.
That night, I put the truck on the timer for the block heater. Next morning (yesterday) it started up fine. The block heater had been on for about 3 hours, and it was 40 degrees outside.
So last night. I finally got the back wall of the garage cleared away so I can park my truck inside. I pulled in and closed the door. I did not plug it in.
This morning, it was probably about 45 - 50 in the garage, and the truck was NOT happy starting up. It coughed and ran rough for a few seconds, then died. It did this 4 times and filled the garage with lots of exhaust (I know this because my wife let me know).
I let it sit a moment, and finally it caught and idled roughly for about 30 seconds before it settled down. I put it in gear and drove to work.
Question is, what is going on here? I have good new batteries, changed my fuel filters about 2000 miles ago. I have no performance stuff installed.
Any suggestions would be greatly appreciated. Do I need to plug it in when in a 45 degree garage? What happens when I am parked somewhere without a plug-in? This must be abnormal.
Truck has about 82K on it. Thanks!