warm up procedure
#11
#13
#19
I fire it up and let it run until it hits 120 degrees (thats when closed loop hits and you can tell the idle changes and the truck really calms down). After that still take off slowly, I've temp gunned the oil pan when the coolant says its 170 and was surprised to see it still 50 degrees.
No matter what when it's real cold (below zero) it's not worth going anywhere until the engine is 120 degrees because driving in open loop will use more fuel than letting it warm up a bit. Also, if it's too cold your transmission wont go into overdrive or lock up until it's warm too.
Now I know about the running in neutral but I have the sonnax sure cure kit so that's not a worry anymore for me.
Also I use a scangauge II and have kept a real close eye on both types of driving, the start and go and the start, warm up a bit and go... the latter wins every time if you drive more than ten miles to work.
No matter what when it's real cold (below zero) it's not worth going anywhere until the engine is 120 degrees because driving in open loop will use more fuel than letting it warm up a bit. Also, if it's too cold your transmission wont go into overdrive or lock up until it's warm too.
Now I know about the running in neutral but I have the sonnax sure cure kit so that's not a worry anymore for me.
Also I use a scangauge II and have kept a real close eye on both types of driving, the start and go and the start, warm up a bit and go... the latter wins every time if you drive more than ten miles to work.
#20
You're getting zero MPG sitting there idling, rather than some MPG while driving, not to mention driving will warm it up faster.