Yeah its my face only a mom could love.
And to be honest, I really don't want to know if he isn't mine. Ignorance is bliss
LOL you and Ali crack me up
Hungry Valley trip and the things I learned
- Thread starter NLXTACY
- Start date
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
LOL you and Ali crack me up
NLXTACY
Wits' End
- Thread starter
- #62
Well happy to hear I'm not the only one that this has happened to. Ans its good that we can all admit it
I just need to be more aware and realize that I removed something that WAS automatic to something that is now manual. When I'm usually looking to do things the other way around.
I just need to be more aware and realize that I removed something that WAS automatic to something that is now manual. When I'm usually looking to do things the other way around.
So true... I've gone through rock gardens in AWD Low and never realized it until I was trying to climb the last two rocks. Usually someone I'm with says "why aren't you using your lockers?" I look down and the diff locks are just flashing at me.
Sporin
Site Addict
So as long as CDL is on this won't happen, correct?
incorrect.
CDL keeps drive train locked together, had no effect on this engine dying.
not sure what caused this.
Had no effect on brakes not grabbing.
maybe caused by bad check valve.
You didn't go past any road closed signs this time did you
No, I don't think that had anything to do with the issues. As I see it, the truck stalled... who knows why... and the driver was unable to maintain control of the vehicle. Locking the center diff may have contributed to the stalling but not to the failure to control the vehicle with the brakes. Either the brake system has a problem or the driver panicked. Since it happened twice, I am leaning toward a defective braking system.
I ran a test at lunch; 2 times. Kill the engine and the residual vacuum in the brake booster will stop the vehicle decisively two times and on the third brake push you can feel a bit less boost but it will stop the vehicle, then on the forth and fifth times you can easily bring the vehicle to a stop and lock the brakes but it takes more pedal effort and you can tell there is no boost.
I did this test on a slight incline and on a relatively steep incline.
I am confident in stating a Land Cruiser with a working brake system will NOT free-fall down an incline if the engine dies. I don't know what was happening but it certainly does not take a 200# man pressing frantically on the brakes to stop the vehicle without boost. A little old lady could stop the vehicle with the brake pedal, no boost, and a stalled engine.
-B-
I'm surprised at the number of folks reporting stalling on steep hills and seeming to accept it as normal. Absolutely not. If your engine stalls like that you have a problem that needs to be remedied. Don't want to hijack the thread, but this is too important to let go by.
As to brakes, I've seen a lot of "my brakes wouldn't stop the truck" stuff on trails. I've seen ABS engage on one vehicle as it dropped onto the first of 5 ledges, which allowed the vehicle to speed up and hit the bottom one fast enough to deploy the airbags and cause severe damage. I've seen people swear they were on the brakes and realize they were on the gas (I did this once in an unfamiliar vehicle - scary). I've been climbing a steep hill with ABS when one tire caught air at the lip which stopped all momentum, then hit the brakes and the ABS system interpreted the fast spinning tire as road speed and prevented me from stopping the other 3 tires (actually on the ground and fine) as sliding. This caused a serious E ticket ride back down the hill in reverse.
So, lots going on as to what happened, including you hit the right acceleration combination to deplete your vacuum (due to a leak somewhere making it already low) on the way up the hill, instantly switched to brakes as the engine stalled and had zero vaccuum. Got rolling in reverse for a half second before you really stood on it, which merely locked up the front tires (extremely lightly loaded in nose up position) as your rears rolled down. Dunno. If there were observers there they might have told you what happened, and often the driver's version of things is different than spotters watching a tire catch air, etc in the aftermath of a situation like this.
As noted the CDL does nothing for/against stalling. It simply shouldn't be stalling, so that needs to be attended to.
DougM
As to brakes, I've seen a lot of "my brakes wouldn't stop the truck" stuff on trails. I've seen ABS engage on one vehicle as it dropped onto the first of 5 ledges, which allowed the vehicle to speed up and hit the bottom one fast enough to deploy the airbags and cause severe damage. I've seen people swear they were on the brakes and realize they were on the gas (I did this once in an unfamiliar vehicle - scary). I've been climbing a steep hill with ABS when one tire caught air at the lip which stopped all momentum, then hit the brakes and the ABS system interpreted the fast spinning tire as road speed and prevented me from stopping the other 3 tires (actually on the ground and fine) as sliding. This caused a serious E ticket ride back down the hill in reverse.
So, lots going on as to what happened, including you hit the right acceleration combination to deplete your vacuum (due to a leak somewhere making it already low) on the way up the hill, instantly switched to brakes as the engine stalled and had zero vaccuum. Got rolling in reverse for a half second before you really stood on it, which merely locked up the front tires (extremely lightly loaded in nose up position) as your rears rolled down. Dunno. If there were observers there they might have told you what happened, and often the driver's version of things is different than spotters watching a tire catch air, etc in the aftermath of a situation like this.
As noted the CDL does nothing for/against stalling. It simply shouldn't be stalling, so that needs to be attended to.
DougM
I had the same issue twice.
I used to have a 94 Green 80 that stalled on me and I lost brakes. When i opened the hood, one of the vacuum lines had come off. It was the one that has a bracket that holds the oil dipstick in place.
Last year my white 80 did the same thing. I am not sure if CDL was on, because since ive installed the switch, I keep forgeting to engage it.
I used to have a 94 Green 80 that stalled on me and I lost brakes. When i opened the hood, one of the vacuum lines had come off. It was the one that has a bracket that holds the oil dipstick in place.
Last year my white 80 did the same thing. I am not sure if CDL was on, because since ive installed the switch, I keep forgeting to engage it.
NLXTACY
Wits' End
- Thread starter
- #71
Yes there is definitely two separate issues:
• Truck stalled on incline
• Truck free wheeled it after stall
First time it happened I thought it was totally my fault and something I did wrong. Which is why I tried it again this time paying special attention to everything I was doing. Same result.
What I should do is see if I am even getting the 2/3 stops on a stopped engine. Maybe that will narrow things down for me a little more.
I am 100% going to try that hill again after I make sure I don't have some type of vacuum leak or other brake issue and also making sure CDL is ON!
When I asked Randy about it, he said that I got to that point at the top and I rev'd the motor because I was slipping (this was the second time not the first. First time I did NOT throttle). He said I just rolled back like I threw in in neutral and I was going pretty fast.
• Truck stalled on incline
• Truck free wheeled it after stall
First time it happened I thought it was totally my fault and something I did wrong. Which is why I tried it again this time paying special attention to everything I was doing. Same result.
What I should do is see if I am even getting the 2/3 stops on a stopped engine. Maybe that will narrow things down for me a little more.
I am 100% going to try that hill again after I make sure I don't have some type of vacuum leak or other brake issue and also making sure CDL is ON!
When I asked Randy about it, he said that I got to that point at the top and I rev'd the motor because I was slipping (this was the second time not the first. First time I did NOT throttle). He said I just rolled back like I threw in in neutral and I was going pretty fast.
that is scary man, you are bold going up a second time...
just brainstorming... is it possible your evap or fuel filter is clogged up and the angle is enough to starve the engine? My friend had a similar situation on his 100 series and I think it was the evap or fuel system vapor locking at extreme angles-could not get rid of the vapor fast enough so it could not suck in fuel or something. Not able to reproduce on-road situations.
just brainstorming... is it possible your evap or fuel filter is clogged up and the angle is enough to starve the engine? My friend had a similar situation on his 100 series and I think it was the evap or fuel system vapor locking at extreme angles-could not get rid of the vapor fast enough so it could not suck in fuel or something. Not able to reproduce on-road situations.
2 different problems here and we're all brainstorming. On the brake problem. Is it possible that the ABS was causing this? look at the symptoms:
1. CDL not engaged so ABS was on.
2. Ignition was still on, tranny still in gear, engine just stalled.
3. Brakes seemed inoperative, maybe in it's own logically demented mind, the ABS ECU was hijacking the brakes, with the ignition on, but with no engine power it couldn't muster the, oh, so familiar chatter.
Food for thought.
1. CDL not engaged so ABS was on.
2. Ignition was still on, tranny still in gear, engine just stalled.
3. Brakes seemed inoperative, maybe in it's own logically demented mind, the ABS ECU was hijacking the brakes, with the ignition on, but with no engine power it couldn't muster the, oh, so familiar chatter.
Food for thought.
I wonder if this is what happened? Since he didn't have the CDL engaged, ABS was still on. Was this some weird ABS interaction?
But yea, it shouldn't have stalled to begin with.
Shahram
I ain't got herpes no more.
I have had my truck stall on me, in a similar fashion, but it was a steep incline, and it stalled when I rolled it backwards in DRIVE.
Joey, if you want to try and replicate the problem where there are no houses, my in-laws live right over in Bell Canyon, and there's a few inclines there where you can try and get it going without fear of ending up parked upside down inside Biff and Buffy's front foyer. We can take a trip up there with the kids this week in the AM if you'd like.
Joey, if you want to try and replicate the problem where there are no houses, my in-laws live right over in Bell Canyon, and there's a few inclines there where you can try and get it going without fear of ending up parked upside down inside Biff and Buffy's front foyer. We can take a trip up there with the kids this week in the AM if you'd like.
alia176
SILVER Star
Yes, yes you must retry that hill while videotaping the whole thing and then put it on youtube. Give me some warning and I'll get the popcorn popping....been a slow monday so far.
Sounds like a fun and educational trip. I ran over a smallish boulder and bent one of my running boards... Just bumped it and crunch... Installed sliders and they are awesome.
Loose the damage multipler up front and get a Shortbus or ARB.
Loose the damage multipler up front and get a Shortbus or ARB.
NLXTACY
Wits' End
- Thread starter
- #78
Fuel filter is 2 months old so I would like to think that isn't it. Evap, well maybe but I haven't had any of the other tell tale signs like gas smell.
One of Randy's engineer co-workers said it could be from locking up the torque converter from revving too high. Definitely did not rev high on the first attempt.
