Offroad Trailblazers and Envoys

Seeking More Engine Power

Trailblazer and Envoy related, but not off-road related...

by The Roadie » Tue Apr 30, 2013 7:58 pm

Because of the specific wording "hit the incline", I'm guessing the snow was an OBVIOUS source of low traction and you wanted momentum to carry you up the incline so you took a run at it and didn't build up the speed you thought you needed on the run.

Anyway, your truck has a different mission from that Jeep, so it's OK to spend your money on better recovery gear, survival equipment, or luxury items. Throw the Jeep a bone and let him winch you up the occasional hill. And THEN you break out the filet mignon and fine wine and cook him a meal he doesn't have the cargo capacity to carry. Heck, I've managed to cater an aged English cheddar cheese and cracker celebration on an after-midnight winch extraction run.
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by boog2006 » Tue Apr 30, 2013 8:38 pm

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by DirtyBacon04 » Tue Apr 30, 2013 8:54 pm

The Roadie wrote: Heck, I've managed to cater an aged English cheddar cheese and cracker celebration on an after-midnight winch extraction run.


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by HARDTRAILZ » Tue Apr 30, 2013 10:55 pm

I had the lack of oil happen a few years ago, but it is so rare and seems to not affect anything that I don't worry about it. I posted up and after discussion, it seemed to be the best option since we don't have many options with our diff/pan setup.
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by v7guy » Wed May 01, 2013 12:07 am

I posted about it too, it's happened a couple other times since I posted about it. You gotta make a decision that instant. Continue to the top for another second, or back off, pop it in neutral, and roll back down.
On the other end of the spectrum, I've never ran out of oil pressure going down a hill.
But then again you're not on the throttle exacerbating the problem when going down hill.
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by dvanbramer88 » Wed May 01, 2013 7:29 am

If it were truly out of oil, or not getting any oil to the top end wouldn't it start tapping like a mofo almost right away? I've seen videos of Jeeps flop on their sides, and the engine starts tapping almost instantly after the engine is on its side.


And in these trucks, with the oil pressure being measured by a switch looking for 12 psi and not a sender; a readout of 0 doesn't always mean zero. It just means less than 12 psi.
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by v7guy » Wed May 01, 2013 8:15 am

In my limited experience motors will survive short duration when oil starved... a few seconds. One of my motors I rebuilt for the firebird was still holding oil pressure and it had some smears on the crank and bearing where they had kissed... I assume it was one of the times I starved it.
As you mentioned though it may not have actually been completely without oil cause even the bird uses a electric oil pressure sensor. Maybe someone else has better info on it.
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