2005 4.8l overheated in city driving ? Why?
This morning I drove my van about 7 miles from home and the check gauges light beeped and them Temp gauge was pregged at 250 .
This was a one time only deal as it always sits about 200F and in the 4 months I have owned it nothing like that has ever happened.
So I let it cool , put some water in the overflow plastic bottle and drove it a few miles over to Walmart ,
Let it cool down for an hour there ,
Since it was pretty cool after the hour cool down , , I carefully unscrewed the plastic radiator cap and you could hear the air go in ( or was that escaping ! )
Anyway i looked down the tube and it was empty at the top of the radiator fins , but only took about 8 oz to fill it up the tube ,
so I replaced the cap and carefully drove home the 4 miles and it never went over 200F
WHY ?????
I am a little scared to drive it far if this will happen again ,
but I have no idea what to check , unless I fixed it by burping it
IDEAS ?
Thanks,
.
This was a one time only deal as it always sits about 200F and in the 4 months I have owned it nothing like that has ever happened.
So I let it cool , put some water in the overflow plastic bottle and drove it a few miles over to Walmart ,
Let it cool down for an hour there ,
Since it was pretty cool after the hour cool down , , I carefully unscrewed the plastic radiator cap and you could hear the air go in ( or was that escaping ! )
Anyway i looked down the tube and it was empty at the top of the radiator fins , but only took about 8 oz to fill it up the tube ,
so I replaced the cap and carefully drove home the 4 miles and it never went over 200F
WHY ?????
I am a little scared to drive it far if this will happen again ,
but I have no idea what to check , unless I fixed it by burping it

IDEAS ?
Thanks,
.
Thread
Thread Starter
Forum
Replies
Last Post
tom5170
Silverado, Sierra & Fullsize Pick-ups
5
Jun 9, 2010 12:13 AM



