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Old 09-21-2015, 03:23 PM   #21
richfaa
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quote:Originally posted by mlh

I would see 1100 degrees or lower and boost of under 40 pounds coming up Fancy Gap at 70 MPH. Don't forget my camper is 9200 pounds and your Montana I think is 12000 pounds but I have 373 gears you have 410s. No I would not be using CC. By the time I get to Fancy Gap I'm almost home and you have hundreds of miles to go. What do you see on Fancy Gap?
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We are stock and the 13 3402 Big Sky is 15,800 GVW and we are at about 14,800 give or take. We are very cautious our aftermarket gauges are set to alarm at 1200 degrees. I like to keep it around that number and we will normally be at 55/60MPH to keep it were I like it. Boost between 35/38.We have plenty of pedal left but we do not use it.Of course we have gone into "cleaning exhaust filter" a couple of times on Fancy gap and that increases EGT by 400/500 Degrees. That will really slow us down. This Ford Truck has been very good to us
 
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Old 09-21-2015, 05:58 PM   #22
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I have a stock LLY with no extra gauges. I don't know what my boost or EGT are running. Do I need gauges for this if I am stock and not using a tuner?
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Old 09-21-2015, 07:24 PM   #23
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When I first got my 2003 LB7 it was stock and I had no EGT or Boost gauges and they are not a MUST have on a stock motor IMO(although they are still nice to have) just remember when Pulling your Monty up the Big Long Hills,don't worry about boost on a stock motor as it very unlikely you will Overboost and hurt anything just stay in tow/haul mode NO cruise control and keep RPM,s about 2200-2600 and do NOT let it Lug down in the under 2K rpm range and your EGT's will be fine,the minute you have the ability to up the Boost add more fuel,air etc.etc... beyond stock with a tuner like I did later with my LB7 and my LBZ THEN GAUGES are A MUST..IMO,By the way have you changed out the turbo mouthpiece on that LLY? that is a source of overheating on those 2004 LLY's ,I would spend my money on that and a aftermarket air intake instead of gauges if it was mine
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quote:Originally posted by h2ojocky

I have a stock LLY with no extra gauges. I don't know what my boost or EGT are running. Do I need gauges for this if I am stock and not using a tuner?
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Old 09-22-2015, 04:40 AM   #24
richfaa
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We are a Stock 08 Ford with gauges and although we do not over boost we can easily see High EGT and high RPM on steep grades.
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Old 09-22-2015, 06:41 AM   #25
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Cetane is to diesel engines as octane is to gas. Use Diesel Kleen or other such product. Check walmart or wherever. John
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Old 09-22-2015, 07:03 AM   #26
richfaa
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We have used a Cetane booster since day one.
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Old 09-22-2015, 07:24 AM   #27
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Yep for sure,My Dmax loves Diesel Kleen
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quote:Originally posted by richfaa

We have used a Cetane booster since day one.
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Old 09-22-2015, 12:48 PM   #28
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We didn't have any codes since Baker City, Oregon. Again CEL went off after started up in at rest area before arriving at BC. Stopped for four nights in Mountain Home, Idaho. Probably drove the truck 200 miles touring the area with just the truck. Left this morning for Salt Lake City. We stopped at first rest area in Utah and CEL for P2599 again. This time didn't clear like it did in Baker City. I didn't attempt to clear it with Scanneer. The CEL has come on when we stopped at rest areas. First time before BC, let the truck idle while attending to business. Today, let the truck idle for at least five minutes. Fixed and ate lunch. Started her up and bingo with P2599. Have an appointment Thursday morning at Salt Lake Chevy dealer. At least we are continuing east toward home. Big concern is possible damage to engine. The truck appears to be performing okay and I am attempting to keep RPMs under 2500. I notice each time we stop for rest area and applying brakes exhaust brake or transmission will easily kick in and RPMs go to about 3,000. This is not a panic stop or hard braking. Keep your advise coming! Thanks,
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Old 09-22-2015, 01:56 PM   #29
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Just plugged in P2599 in search engine, and on the dieselplace.com, there is a posting with this info on that code:

Turbocharger Boost Control Position Performance - High
Conditions to set the code are: Coolant has to be between 158* and 253*, engine running between 30 and 210 seconds after a restart, Ambient temp over 5* F.
If all are met P2599 will run continuously.
Actions taken by PCM, DPF is inhibited.
Also a restricted oil supply fees to the turbo "may" cause this code to set.
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Old 09-22-2015, 04:02 PM   #30
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Thanks, Rohrmann - I looked back at my paperwork from our last trip pulling camper to Florida earlier this year and the CEL that happened on that episode was also P2599. This truck is throwing so many codes hard to keep track. The local dealer in TN changed the vane position sensor upon our return home from Florida. Several people said then that the turbo was the real problem. Of course, as said on a long post on diesel place this only appears when pulling a heavy camper. This is our first trip since Florida. Both dealers talked to on this trip and CELs said it is the turbo but GM is hard to convince because of the expense. You have to lift the cab to change the turbo. Damn it, I thought about a 6.4 Dodge before purchasing this used truck. They probably also have problems. But after the overheating problem with my LLY, I did it again with another GM product. I think the $1 billion fine GM is paying will not help these situations! Thanks,
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Old 09-22-2015, 08:38 PM   #31
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Do not be too harsh on the Duramax IMO the Duramax /Allison combo has been the most reliable combo thru all the years ,The LLY had a restrictive Turbo mouthpiece that made it overheat but was easily fixed ,the vast majority of Duramax owners Love them Including a two time owner like me( and I was a HARDCORE Ford guy) ,it is too bad you got a bad one for whatever reason,I have owned all three and would LOVE to have a Newer one if I could afford it
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Old 09-23-2015, 12:39 AM   #32
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X2 for bigskyjimmy

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Old 09-25-2015, 12:01 PM   #33
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I"may" have to eat some words said against GM. The dealership in Salt Lake City (Jerry Seiner)took about 45 minutes and said bad turbo and we have found one in SLC. Service desk person listened patiently to my speech when we first arrived. I asked to speak with diesel mechanic. He said sure but let him check the truck without any input and see what he thinks first. Mechanic knew it was the turbo right off. This was about 10:45 am and the truck was ready 24 hours later. Their service department stays open until midnight. They provided a almost new 2015 1500 crewcab 4x4 for us to use. Picked up our truck and put it through the RPMs on tour of mountains around SLC. No codes and it will get the real test heading east tomorrow with the camper. Thus far, I have never been treated any better at any dealership. They even have a small grill with a limited menu inside the waiting area. They have at least two Chevy dealerships in the SLC area. We are keeping our fingers crossed!
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Old 09-25-2015, 12:57 PM   #34
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Glad to hear you finally found a cooperative dealer with a good mechanic.
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Old 09-25-2015, 01:41 PM   #35
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I keep hearing the GM turbos are good for about 100 K. A guy Chris that works in my shop had his go out at 100000. The owner of our local diesel shop said right off it's the turbo, and that was before he even checked it. The diesel tech at a local Chevy dealer says he has changed so many he can change them blind folded. Chris says his truck gets better fuel mileage pulling his camper since his was replaced and runs better.
This is NOT meant to bash Chevy. I'm is big a fan of Chevy as anybody.
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Old 09-25-2015, 02:06 PM   #36
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My '12 truck has 59K miles and the repair cost me about 10 gallons of gas for the loaner. My LLY had close to 150K miles and once changed the turbo inlet to one for later model it performed well with no overheating.
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Old 09-26-2015, 08:10 PM   #37
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Duramax Turbo's only good for 100K or so???? OH I don't think so, go to any Duramax Forum and that is a rarity for one to let loose UNLESS they are boosted to crazy levels my last 2003 LB7 had 174K before I traded it in on a 2007 LBZ with 178K all original turbo's and run great and WITH tuners as a matter of fact I have never even meet a guy that has blown a turbo on a Duramax until this post UNLESS like I said they are racing them or sled pulling etc. with a Crazy tune on them.
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quote:Originally posted by mlh

I keep hearing the GM turbos are good for about 100 K. A guy Chris that works in my shop had his go out at 100000. The owner of our local diesel shop said right off it's the turbo, and that was before he even checked it. The diesel tech at a local Chevy dealer says he has changed so many he can change them blind folded. Chris says his truck gets better fuel mileage pulling his camper since his was replaced and runs better.
This is NOT meant to bash Chevy. I'm is big a fan of Chevy as anybody.
Lynwood
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Old 09-27-2015, 02:43 AM   #38
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X2 on bigskjimmy again.

A friend down the road just bought a new Duramax 1 ton and was upset that the dealer wouldn’t take his old Duramax in trade because it had 600K on it and he never had turbo problems either.

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Old 09-27-2015, 12:48 PM   #39
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I purchased the truck used with 33K and the SLC dealer said it had never been tuned as did the Chevy dealer that sold me the truck. It was a local trade in on a new 3500 diesel. I certainly didn't tune it. I have not "raced" it or intentionally attempted to exceed rpms. I drove the '12 just like I did the '04 pulling the same weight camper. The '04 had 150K miles. The '04 pulled the camper to Western US and Canada (Victoria, Washington State and Oregon)twice plus up and down the east coast several times. The first trip west caused me to install the LB7 turbo inlet and cold air return. If the '12 continues to perform as it has from SLC to Moab and then home, I will be a happy camper and Chevy Duramax owner!
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