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Truck caught on fire last night

mr_blasto

1/2 ton status
Joined
Nov 8, 2004
Posts
496
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Location
Irvine, CA
I was just coming up on the 100 mile mark on a nearly 700 mile road trip and was nearing the top of the Cajon pass. The truck was charging up it without issue at 65 mph. I just passed a squad of firefighters caravaning to some forest fires in Wrightwood. About 30 seconds after passing them, I am engulfed (top was off of course) in some really thick smoke. The motor was still running and I never heard anything abnormal, just instant smoke. I immediately get over to the shoulder and throw it in park and turn off the car.

After coming to a stop, the smoke was still coming but there wasn't much. So I was sitting there trying to think what could have happened. I barely hear my wife screaming from the car behind me over the roar of the traffic to get out. I jump out and run back toward her and saw a fire going right about at the transfer case. I picture my truck and all my tools in it (nearly all the tools I have, welder included) burning into nothing, so I run back toward the truck for the fire extinguisher. As I am running to the truck I remember that the flames are on the side of the truck with the fuel lines and recalled I had just passed the firefighters 30 seconds ago. I stop and go back to our other car and watch so thankfully as the firefighters pull over and do their thing.

After a cursory inspection in the dark with a cops flashlight, it looks like the flames did minimal damage to the truck, but I definitely spewed ATF all over everything from the trans back (the rear axle was pretty saturated). We loaded it on a flatbed and had it towed back to LA, we kept going in our backup car, which was taken out by a big rig tire in our lane just outside of Primm - but that's another story.

Anyways, I am in Vegas now as the backup is being repaired and the truck is in LA. My step dad said the truck runs fine and after they dropped it off he drove it on the street to find a parking spot, but he says the trans is likely not going to last much longer after that sort of ordeal (he had a similar experience in a loaded truck once).

My wife, my 2 yo son, and I am all safe, and the truck is not a smoldering heap thanks only to those fireman who just happened to be right there. The guy behind my wife pulled over and said he had to dodge a piece that came flying off the car, but I can't think what would have come flying off and how my wife didn't have to dodge it, but he did.

So this is the long way of saying, is it nearly certain my trans is done? What should I inspect or look for once I get back to it? Is it likely that the np205 is toast as well? What's the best deal going on a 700r4 (and possibly xfer case)? I have a built motor, so I guess I need a slightly beefed up 700r4, would you consider having a local place take care of it or only a place online with a reputation? Would you even consider using a junkyard pull 700r4? Never been down this road before, so any help is great.
 
You have to figure out where that ATF came from first; did you blow a transmission cooler line? A seal in the t-case? When you get back to your truck check all the levels, clean the bottom side out real good and figure out where the leak came from.

I'd bet your trans isn't hurt.
 
Wow.....this story could have went the complete opposite way really quick. CK5 Gods were watching over you. :D
 
You have to figure out where that ATF came from first; did you blow a transmission cooler line? A seal in the t-case? When you get back to your truck check all the levels, clean the bottom side out real good and figure out where the leak came from.

I'd bet your trans isn't hurt.

X2! My brother-in-law blew a cooler line on the trail once and it was the same type of result, no smoke and then lots of smoke. Belive it or not they pissed on the fire to put it out. His trans was fine.
 
Good to hear you are alright...

I have a close buddy that was towing his jeep with his motor home over Chinook pass to our Memorial Day wheeling spot and had it vapor lock on him... He cracked the fuel line to try and let out the pressure and the thing caught fire... Total loss, couldn't stop it... He unhooked his trailer and started throwing his dirt bikes into the ditch when the brakes burnt threw and the motor home rolled into the jeep and took everything else with it in flames...

It's taken him a few years to get back to almost where he was with his rigs... It sucked and he went through a lot dealling with losing everything with only liabilty insurance...

But, nobody got hurt... That's the big thing...

No matter what you can always rebuild a truck, car, motor home, ect... Be thankful you have your health and family... Good luck...
 
This is just a WAG, considering that I am a long ways away and not looking at it, but if the truck is not partially melted, I suspect that the 205 is fine.

It would take more than a little pantywaist fire like that to get that chunk of cast iron hot enough to hurt anything inside.

If it were concentrated just right, it might have melted an output seal, but the inside, no way.

Now, as to the transmission, its anybody's guess right now. If it drove ok, then it sounds like you may have boiled the fluid.
If so, then you have definitely shortened it's life. By how much? There's the rub.

When you get to it, of course try to find where the fluid came from. If there is nothing broken, or any leaks, then it most likely came out the dip tube.
I would change all the fluid, and do a filter change.
Smell the fluid that comes out.
If its real dark and almost chokes you, figure on a rebuilt or rebuild soon.
If there are chunks in the pan, same thing.
If the fluid is normal looking to a little dark, but does not smell burnt, I would tentatively consider it drivable for at least the time being.
But start considering your options and maybe setting aside a few dollars a month for a rebuild.

Check out and change the fluid in the 205 too.

If the truck has a Cat on it, then thats likely the cause of the fire.
Transmission spewed fluid for whatever reason, air stream aerosoled it, Cat ignited it.

Oh yeah, the thing the guy dodged? Probably just the cooties jumping off.........
 
Glad you are all OK and the truck is not too bad.
Where in LA is your truck?
 
glad everyone is ok....


and if noone has mentioned it, this is exactly why































EVERY VEHICLE SHOULD HAVE A FIRE EXTINGUISHER IN IT....
 
EVERY VEHICLE SHOULD HAVE A FIRE EXTINGUISHER IN IT....

Not to worry, my truck has 3 in it.
They are in the toolbox.
Somewhere.
Under a bunch of stuff........

But I checked them to be sure they were good!
Sometime.
I'm sure it was in the last couple of years.
Or at least this decade.
How long has it been since they quit selling Halon???
 
Do you think this fire was caused by your awesome new rear shock mounts?


:D




:usaflag:
 
Thanks for all the responses and support. My two year old son in the car with my wife kept saying, "Dadda, HOT!" My wife is still really shaken up about it - unfortunately this may have been the straw that broke the proverbial camels back as far as K5 ownership goes. Not sure, we have to talk things over and look at our options. I won't be back to the truck until Wednesday at the earliest, but maybe not till weeks end. It is currently at my mom's house (which she is trying to sell, so she is not too happy about all this) in Palos Verdes, which is right next to Torrance.

Regarding the cats, it's a 72. Regarding Fire extinguishers, I might have made the play to grab it out of the truck if the fire dept wasn't there. I just pictured myself going back for it, turning into a ball of fire as the tank caught, and regretting permanently scarring my face and body to save an old truck - it didn't happen, but it played through my mind. Regarding the shock mounts, they are pretty hot and sexy and just might have been what lit the fluid, who knows.

Thanks to everyone for providing places to start looking. I'll update this when I get back and can give it the once over.
 
I was once at an event where a fellow 1st Genner pulled up after running on the trails, parked his truck and walked over to where we all were standing. A few moments later we see flames literally "dripping" from under his truck as his ATF boiled over and ignited on the headers. Scary.

We were all over it with extinguishers and got the fire out right away but it still cost him a new air cleaner and some of his firewall wiring harness.

Obviously, there are a few lessons that are important:

1. Get a transmission temp gauge and install a bung in the pan to monitor how hot things are getting.

2. Buy the largest stacked-plate tranny cooler you can find and get it installed. Transmissions get worked really hard offroad, so there really is no such things as "too much" cooling.

3. Get a Lokar locking dipstick. I mention this last not because it's less important but because you shouldn't be using this as your primary solution for boiling ATF. However, because of it's design it will not allow fluid to puke out around the top of the tube so you aren't going to be overflowing onto a hot exhaust system. Also, if you ever find yourself upside down on a trail you won't have to worry about the transmission fluid running out while you wait for help to get the truck winched back over onto it's wheels. Not leaking fluids is a good "tread lightly" principle too. :waytogo:

Anyway, I figured you might want a few helpful tips along with the smarta$$ ones. I'm sure the experience was a scary one, but there are simple steps that can be taken to insure that is never happens again. Don't let a bad experience cause you to overreact beyond what is necessary to resolve the original issue.


:usaflag:
 
I was once at an event where a fellow 1st Genner pulled up after running on the trails, parked his truck and walked over to where we all were standing. A few moments later we see flames literally "dripping" from under his truck as his ATF boiled over and ignited on the headers. Scary.

We were all over it with extinguishers and got the fire out right away but it still cost him a new air cleaner and some of his firewall wiring harness.

Obviously, there are a few lessons that are important:

1. Get a transmission temp gauge and install a bung in the pan to monitor how hot things are getting.

2. Buy the largest stacked-plate tranny cooler you can find and get it installed. Transmissions get worked really hard offroad, so there really is no such things as "too much" cooling.

3. Get a Lokar locking dipstick. I mention this last not because it's less important but because you shouldn't be using this as your primary solution for boiling ATF. However, because of it's design it will not allow fluid to puke out around the top of the tube so you aren't going to be overflowing onto a hot exhaust system. Also, if you ever find yourself upside down on a trail you won't have to worry about the transmission fluid running out while you wait for help to get the truck winched back over onto it's wheels. Not leaking fluids is a good "tread lightly" principle too. :waytogo:

Anyway, I figured you might want a few helpful tips along with the smarta$$ ones. I'm sure the experience was a scary one, but there are simple steps that can be taken to insure that is never happens again. Don't let a bad experience cause you to overreact beyond what is necessary to resolve the original issue.


:usaflag:

I have been getting quotes from shops and think I will have it rebuilt rather than trying to do a Junkyard swap myself. I was just thinking though, why did this happen in the first place?

The K5 has done that pass and that drive at least 6 times over the years and never had an issue. I see three possibilities.
1. The transmission wasn't cooling properly - I don't have a separate trans cooler, but then I have never needed one before.
2. The transmission was generating excessive heat - is this simply because of the grade of the hill or would a tired trans/torque converter lead to this?
3. A line or seal was weak/tired/rotted and just broke - I somehow doubt this was the case and suspect either 1 or 2 would have lead to excessive pressure that might cause something to break.

I was sitting here thinking that if I have the transmission rebuilt and the torque converter replaced, am I just going to have the same exact issue when I tackle the pass again? Greg's tip about the transcooler would certainly provide a little insurance, but for the sake of argument, let's say I only rebuild the transmission and don't do a cooler - is it likely to happen again or should the rebuild address the excessive heat problem? Just trying to think this one through.

I really like your ideas there Greg, but it's tough because each one costs more money in the short-term in order to save money in the long run. And things just got a lot tighter around here.
 
At the very least, get the trans temp gauge....even if it's just a cheap one.

If you're going to spend the money on a transmission rebuild, it makes sense to know if you are running it too hot (anything over 180* is too much). You'll have the option to pull over and let it cool at least. Without the gauge, you'll have no idea what is happening and if you overheat the fluid the tranmission shop will void your warranty anyway...

My suggestions #2, and #3 can wait as long as you know what your temps are and they are reasonable.

Another thing: Don't be tempted to re-use your old torque converter to save money on the rebuild. It's full of burnt fluid that you can't ever flush completely, so you'll just end up circulating contaminants into the new trans.


:usaflag:
 
Ya, the quotes that I got include a new torque converter. I was looking at the price of coolers and gauges in the summit catalog last night, and they aren't too bad. I'm trying to figure out where I would mount the gauge where it wouldn't look terrible. The gauge cluster is the obvious answer, but ya... I had an old dodge where some guy mounted cheap gauges just below the dash and it almost made me puke. Maybe it was his execution.
 
You could try this...

MVC-020F.jpg


4MVC-010X.jpg


It's an Autometer gauge grafted in behind the stock cluster... a lot of work, but looks really cool and well integrated.




:usaflag:
 
I was worried you were going to link that or bigblock72's setup. Looking for something that won't take much time and work. Something like that pic would be the long term plan. I just want to grab the car and head back to UT. I'll figure something out.
 
So if you had a pin hole, hole in your line and it shot a mist of fluid on your exhaust pipe it would catch fire. Might just be something as simple as that.

It takes a long time and I mean a long time to burn a truck to the ground, watched a few burn never saw one go boom all at once, not that it couldn't happen.
 
I was worried you were going to link that or bigblock72's setup. Looking for something that won't take much time and work. Something like that pic would be the long term plan. I just want to grab the car and head back to UT. I'll figure something out.


Sorry.....Here's the quick way!

DSC01189.jpg


Just remove the gauge from the outer box and leave it attached to the red cardboard on the inside of the box. Bend just above the top of the gauge, and just below it to form a triangular shape and then jam it onto the dash. The dash pad will hold it perfectly in place. :waytogo:

I did this before towing with the 'Burb as a quick-n-dirty solution, and it ended up sitting there for about 5 years! :doah:

:usaflag:
 
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