Kind of like waiting until next fall for the next season of your favorite TV show to come back.

 

Is there a way to find out if the problem with the Truck is just the IPR or the whole HPOP. I have different opinions. Huge price difference. Is it a waste of time to go in and swap out the IPR to only find out that it's the HPOP....Little help.

 

What does it mean when everybody says 'the truck ran away'.

 

I am wondering that myself...

 

Uncontrollable revving until something blows up. It basically uses it's own lubricating oil as a fuel source.

 

Could you guys give us a few questions to ask a diesel tech that might/would be working on your trucks. So we get someone qualified to help us out, i havent had to go to the dealer yet! I don't know if this would even work... You people on the fourm are an awesome source of information/ knowledge, Thank You for that!!!

 

---------------------------------------------------------------------------------

Want to add my own little number on this issue. From experience. The only way I have ever seen a diesel run away is by the use of gasoline and starting fluid being taken in through the intake. I have seen a couple runaways caused by said chemicals being used to attempt to start trucks by incompetent so called mechanics in our family owned shop. I personally have never seen a engine running on pure diesel runaway leading to catastrophic failure.

I have heard of stories of runaways occurring from incorrect fuel such as gasoline but I myself have never seen one caused by that. I have had several vehicles with diesel and gasoline mix from fueling accidents.

just some support and maybe some ideas what might be the cause of your runaway.

 

ive seen a few runaways from diesel fuel, from engine oil as well

 

diesel runaway
This was a description of a diesel runaway by technician Greg Holecamp-----------------------------------------------------------------------------------------
Posted on June 16 by Greg Holekamp: A diesel runaway is when the engine rpm goes up uncontrolled and there is no way the engine can stop itself. Diesel engines don't actually require any controls on then to run. All they need is fuel and air. Gas engines need a spark at just the right time, and a fuel pulse of just the right duration to run. Also, diesels can run on a wide range of fuel. Remember when all of us diesel guys were complaining about leaking injectors on 03's that were filling the crankcase with fuel? Well, 30+ quarts of a fuel/oil mix in the crankcase will submerge the crank. One of the last steps on the diesel diag sheet is an oil aeration test where you have to run the engine at wot (3500 or so rpm) for 3 minutes and then view the oil condition. That crank whipping up the fuel/oil will make a foam that rises through the engine, and eventually starts getting drafted into the intake stream. If there is enough coming into the intake, the engine rpm will start to rise even higher. Of course, this causes the oil to whip more, which makes it rise faster in the engine - a vicious cycle. You cut the key off, but the engine doesn't care - it's getting it's own fuel from another source. Smoke starts to pour from the tailpipe, and the truck starts to vibrate. At about 6000 rpm the ground starts to shake throughout the shop and the sales department looks outside to see if a thunderstorm is coming. 7500 rpm has the shop evacuating - by this time, the whole shop is flooded with smoke. 9000 rpm brings ominous noises from the shop - a cyclic wave of sound that feels like an invisible hand pressing on your chest. Somewhere about 10,000 rpm and the engine gives up. A sound that is a combination of a nearby lightning strike and every toolbox in the shop turning over at once explodes from the shop. The sound echos and continues for several seconds. You can actually feel a shockwave disperse through the concrete you're standing on. And then, the deafening silence. You try to see through the smoke and locate the truck - but something is wrong. It is sitting at an angle, tilted down in the front. And then you see why - both front tires are blown out. There is a scattering of parts 3 bays in each direction. A puddle of fluid is rapidly spreading from under the shredded front cap. The hood and fenders are destroyed, but ironically, the grille and headlights are still intact. And your first thought is - at least I don't have to work on this one anymore! And that, my friend Bernie, is a diesel runaway.
__________________
ase master tech--fmc senior master tech

 

I don't believe in to many things, but right now I believe I'll go out and check my " OIL ".

 

I don't disagree that it is possible and I have heard other mechanics say they have seen it.... just trying to point out that I personally have never seen it happen due to failure of seals or engine controls. Trying to hit on how uncommon of an issue a diesel runaway really is. I have never seen one occur from natural cause. Although seen two which caused by major human error over a 15 year period of working in my family owned shop.

Only reason I wanted to put my 2 cents is this poor guy is probably going to bite the bullet and I feel for him. I hope he doesn't give up because these damn dealerships take you to the cleaners and many do unnecessary repairs to pad there pocket books. I have seen it again and again. I wish the very best for this poor guy.

 

that was a real post on the dealer site i remeber reading it.

 

i get that. dealer life is a bit different then the indy world. we see lots of stuff in the dealer truck shops thats pretty much ill ive worked on for many years. yes its uncommon. ive had a few in my stall over the years. stop traffic on the freeway with smoke from one. had the fire dept get called and show up on another. the guy in the stall next to me installed a ford reman that lasted 15 min if it was lucky, he started it up and after about 5 min of idle it tacked itself out and blew up... that was pretty funny really, tear down found a broken injector tip.

 

That's what youtube is for

 

I love this one. Go to about 2mins 5 seconds in and watch the young guys run for their lives. Then the older guy walks camly up and saves the day like he's seen it all before.