ISX 871 525hp No throttle response
03-09-2017, (Subject: ISX 871 525hp No throttle response ) 
Post: #1
ISX 871 525hp No throttle response
So other day hauling grain on a realively warm day temps around 30f my 2008 kenworth T800 550000 miles Stop Light came on and it went into total limp mode. Got er pulled over just barely shut er down. Shut power off and 5 mins later started her back up. Turned around and she drove home just fine. Was getting a crank case pressure warning on dash. So replaced the crankcase ventilation filter to the open element kind. We had a terrible blizzard so pulled her into the shop for further investigation. Cleaned the IMAP sensor and exhaust pressure sensor. Checked codes only getting one a 4214. Tough to find good info on that one. Also outside air temp not registering on dash tried to find the sensor its not under the mirror i have steel simple ones, and not in the front bumper area. Pulled it out for a test and now stuck in full limp mode no stop light, zero throttle response just idle. Did a forced regen took an hour no improvement. Inspected turbo on intake side seems fine. Pulled egr venturi tube full of coolant explains why truck has been going through some coolant. Egr cooler must be leaking. Could not bust 10mm bolts to egr valve wiggled back n forth for 15mins and stripped the head arghhh. Truck does alot of idling and very short hauls around the grain farm. Ive read the warnings about egr delete but this truck operates in some really cold like up to -40f and hardly leaves the farm. When cleaning grain in winter it has to idle all day. It might get 10000 miles a year and farmers are exempt from safety inspections up here in Saskatchewan. Im leaning towards this delete kit
A local shop called smokem diesel will program Ecu for 2500. Also delete the dpf . What should I do? Thanks in advance!
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03-09-2017, (Subject: ISX 871 525hp No throttle response ) 
Post: #2
RE: ISX 871 525hp No throttle response
https://quickserve.cummins.com/qs3/pubsy..._3775.html


User's Signature: I'm no mechanic, I'm just a guy that breaks down enough to know a bit.
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03-09-2017, (Subject: ISX 871 525hp No throttle response ) 
Post: #3
RE: ISX 871 525hp No throttle response
I'm a 306 boy myself. I moved out to Albert's now as I work hauling oil and I too had issues with these systems and my excessive idling.

Not to say that shop isn't going to do it right...
But from what I've seen, none of them do. I 100% guarantee you that they are a sub dealer for a big company who will do the work remotely and put some generic bullshit program in there that'll have your engine surging and pushing oil and most importantly probably end up over heating your head.

For a guy who idles alot like you do, there are parameters that can be adjusted to help keep fuel usage down and also help keep Temps up on those cold days and these are things you need, not some balogne 700hp tune that makes your motor run hot.

There's crop insurance for bad yields but Brad wall ain't gonna bail out stupidity.

Plus side is you are at the right place to get the proper help to make sure that motor makes you some damn money!


User's Signature: I'm no mechanic, I'm just a guy that breaks down enough to know a bit.
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 Thanks given by: hhow55 , Hammerhead
03-09-2017, (Subject: ISX 871 525hp No throttle response ) 
Post: #4
RE: ISX 871 525hp No throttle response
I would PM Gearhead or Unilevers. Those are the only two I would allow to remotely access my truck and get it right.
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 Thanks given by: hhow55
03-09-2017, (Subject: ISX 871 525hp No throttle response ) 
Post: #5
RE: ISX 871 525hp No throttle response
You probably need to replace the cc pressure sensor as well as the filter. The ambient air temp sensor not registering is a major problem as far as the ecm/ emissions and I could see that shutting you down.
Mine is located in the driver side mirror, best get with KW and your VIN to locate it.

EGR full of coolant is another problem that needs to be addressed especially if emissions system is still intact. The system is temperamental enough without neglect.
I see an egr cooler in your near future.

Dont even consider any other option than mm unless you want real problems!

You have your work cut out for you if you want to keep running it.


User's Signature: 2010 386 Pete CM871, 13 spd. 3.55
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 Thanks given by: hhow55 , Roysbigtoys
03-09-2017, (Subject: ISX 871 525hp No throttle response ) 
Post: #6
RE: ISX 871 525hp No throttle response
I've got jack for work going on right now, for that kind of money, I'll come to your place and do it!
Hell, for that kind of money, I'll come to your place, do it, and replace the leaking EGR cooler at the same time! As far as the shop you mention, not just no, but hell no!
Like Brock, I'm also a 306 boy, and I cannot stand for a fellow Rider Prider to get screwed over with some big name BS custom tuner #### your motor crap. If you have a laptop, Inline connector, and an Internet connection, get Unilevers or Gearhead to remotely tune it if you're comfortable doing the mechanical part of it.
With the aftertreatment system being in place, and that kind of idle time you may have already developed some other issues as well, but that place is not your answer.
Long term, get it done properly, and as long as it hasn't been bad deleted so far, an 871 can be a very long term reliable motor for your application...done properly.
To the best of my knowledge, there are no shops doing it correctly there.


User's Signature: Why? Why do I always ask "why?" Because I can't learn or help teach others with "'cause I said so..."
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 Thanks given by: Brock , Roysbigtoys , kalsandhu
03-09-2017, (Subject: ISX 871 525hp No throttle response ) 
Post: #7
RE: ISX 871 525hp No throttle response
(03-09-2017 )Biglentil Wrote:  So other day hauling grain on a realively warm day temps around 30f my 2008 kenworth T800 550000 miles Stop Light came on and it went into total limp mode. Got er pulled over just barely shut er down. Shut power off and 5 mins later started her back up. Turned around and she drove home just fine. Was getting a crank case pressure warning on dash. So replaced the crankcase ventilation filter to the open element kind. We had a terrible blizzard so pulled her into the shop for further investigation. Cleaned the IMAP sensor and exhaust pressure sensor. Checked codes only getting one a 4214. Tough to find good info on that one. Also outside air temp not registering on dash tried to find the sensor its not under the mirror i have steel simple ones, and not in the front bumper area. Pulled it out for a test and now stuck in full limp mode no stop light, zero throttle response just idle. Did a forced regen took an hour no improvement. Inspected turbo on intake side seems fine. Pulled egr venturi tube full of coolant explains why truck has been going through some coolant. Egr cooler must be leaking. Could not bust 10mm bolts to egr valve wiggled back n forth for 15mins and stripped the head arghhh. Truck does alot of idling and very short hauls around the grain farm. Ive read the warnings about egr delete but this truck operates in some really cold like up to -40f and hardly leaves the farm. When cleaning grain in winter it has to idle all day. It might get 10000 miles a year and farmers are exempt from safety inspections up here in Saskatchewan. Im leaning towards this delete kit
A local shop called smokem diesel will program Ecu for 2500. Also delete the dpf . What should I do? Thanks in advance!

I have met a hundred drivers or more in your situation... egr cooler leaking,.. facing yet another dpf issue,... some shop with big promises for a few thousand, and a crappy delete kit (if that is what you would call it) ready to destroy your engine in a hurry. -- You,.. I have seen it a hundred times.

Those guys who have posted in this thread warning you are some of those same people and they mean what they say. They have been there.

What typically happens is ... Joe X does not listen very well and is desperate,... they go for the crappy crap dlete kit and the false promises of some crappy dlete from a shop with big names,.. they end up completely regretting it later and having to find someone to do it right,.. paying all over again.

Do yourself a favor. -- Save yourself the first step, wasted money, and destroyed engine parts.... Have some patience and get with unilevers and/or gearhead,... or have someone like Hammerhead or Brock help you a bit, especially since they have offered. Those guys have been in your shoes.

In the mean time, educate yourself on the things you are inquiring about. there is plenty of information and things to know so you don't get burned, because the cards are stacked high against you if that is what you are seeking. Here is some light reading...
http://rawze.com/forums/showthread.php?t...01#pid5901

Maybe gearhead or Uni will see this and respond. Perhaps they have simply been very buisy, sometimes it is just that way. You also have the option to taking it to Mr.Hag down in atlanta if you want to take a trip with it. I visit his shop regularly because i live down the street and can tell you he is top notch too. Can't go wrong there either, but I can tell you for sure. YOU WILL WANT TO DO THE RIGHT THING AND REPLACE THAT EGR COOLER EVEN IF YOU DECIDE TO AXE THE SYSTEM! -- This is because if you use that bulls%#$hit styage crap 2 kit it will unbalance the coolant flow through the engine. The back half of the oil cooler will run hot too. Also, you will get a bunch of head pressure between the water pump and the dead circuit, causing a bit of face-loading. None of these things are a good things at all!. So -- REPLACE THE EGR COOLER and replace the IMAP, Ambient air temp, and exhaust bp sensors like the others are recommending, even if you have delete or not. The engine relies on those sensors for proper combustion and timing offsets. YOU CAN'T JUST GO AROUND AND MAKE THESE NEWER ENGINES DUMB AS A BRICK JUST TO SAVE A FEW BUCKS! .. IT WILL BITE YOU IN THE ARSSE!.

DO THINGS RIGHT -- EVERYONE HERE IS POINTING YOU IN THIS DIRECTION -- OTHERWISE TAKE YOUR COMPLAINTS SOMEWHERE ELSE AND GET TAKEN FOR A FEW THOUSANDS BY A BAD DLETE COMPANY WITH FANCY BIG NAME AND COOL LOOKING WEBSITES leaving you with a crappy running junker of an engine WITH CRAPPY BULL$HIT MODS DONE TO IT. Those shops are everywhere.

Here is a running collection i have started ..
http://rawze.com/forums/showthread.php?t...5#pid13255


User's Signature: ->: What I post is just my own thoughts and Opinions! --- I AM Full Of S__T!.
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 Thanks given by: Brock , hhow55 , Roysbigtoys , kalsandhu
03-09-2017, (Subject: ISX 871 525hp No throttle response ) 
Post: #8
RE: ISX 871 525hp No throttle response
im near you. pm me your number and we can chat and get you sorted out before somebody does something silly.
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 Thanks given by: Rawze
03-09-2017, (Subject: ISX 871 525hp No throttle response ) 
Post: #9
RE: ISX 871 525hp No throttle response
I think i better pull the valve cover off tonight and have a peak. She was a RB special may have got more than I bargained. Worse case senario my dad has a good N14 on a pallet in storage. Is that crazy talk or a valid option? Has an Rtlo18918B 18sp would it bolt right up?
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