TSB 8-25-1 finally!
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Senior User
Joined: Oct 2008
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TSB 8-25-1 finally!
After 2 trips to the dealer, and taking the tsb with me, they have finally agreed to replace the CAC and also ordered a new EGR at the same time. I was pretty insistent because this problem is one that is very dangerous in my opinion. Four times now, I have been pulling a trailer and have needed to accelerate (on an on-ramp, passing, etc.) and have had the problem of white smoke, loss of power, shaking, etc. One time this resulted in a near accident because of losing power and the engine stumbling. The tsb says nothing about losing power, but others seem to have experienced the same thing. Do others think this is a safety concern or is it just me?
Post Fiend
Joined: Jan 2009
Posts: 6,521
Likes: 11
From: Greenwood, SC
I think it could be a safety issue in the right situation. My issue with the stumbling/stutter, etc... has mostly been when I get stuck in the left lane and I can't speed up in order to get out of the way, then the impatient morons start peeling around my right side and I sometimes have to "nudge" somebody off the road or into the far right lane in order to get out of the left lane. Don't get me wrong, I don't run people off the road but I do hate being passed on the right so I assert myself when the time is right to cut them off.
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I was pulling about 8000 lbs and trying to merge onto an Interstate. I had plenty of room under normal conditions, but I was merging in front of an 18-wheeler. He was way back in my mirror but probably coming at 70mph. As I merged and hit the accelerator to increase speed, I saw a stream of white smoke coming out the exhaust and the truck would not pick up speed and started stumbling, etc. Now the 18 wheeler is getting close and he has to brake heavily to avoid hitting me in the rear. It certainly scared me and the truck driver was rightfully po'd!
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Senior User
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Just one more thought - this problem is pretty random so you never know when it might happen and that can end up putting you in a risky situation. Under normal conditions, I hit the accelerator pulling 8000 lbs and take off - the truck pulls amazingly and has great acceleration even pulling a load. So, you get used to that and drive accordingly. Then, at some point you hit the accelerator and the dreaded problem occurs!
Tuned
Joined: Jul 2007
Posts: 413
Likes: 1
From: Tennessee
I had this same problem, and after taking it to the dealer with the TSB they told me they could not reproduce it. It was a sunny day. they called me and told me they couldnt get the truck to reproduce it and I informed them that they wouldnt be able to on a sunny, dry day. They wanted me to come show them. So I drove down there, and luckily a storm front had moved in. I was able to go out with the mechanic and reproduce it, and then, as he was looking at the TSB on the way back, he noticed on the TSB that it did not say that the dealer has to be able to reproduce the problem. It states that if a customer comes in with these complaints they are to replace the CAC, no questions asked. So I wasted my time, in a way. They replaced the CAC, and it hasnt done it again, but they said nothing about my EGR. I know several people have had the CAC replaced and have had the issue return. The new CAC looks to have wider fins. A picture of my new CAC is posted in my garage if anyone wants to see it. I hope, now that im over my 36,000 warranty, that my EGR doesnt start messing up. What would cause the EGR to be part of this problem possibly also?
Super Moderator
Joined: Aug 2003
Posts: 25,479
Likes: 742
From: Isanti, MN
ssharbor, your EGR system is covered under your 100,000 mile engine warranty. I wouldn't worry about it!
ctownson, I can understand where you're coming from. But, as a truck driver, a situation like yours doesn't aggravate us half as much as the clown merging on at 35 MPH and simply doesn't care enough to accelerate to highway speed in a reasonable timeframe. 
At least you were trying!
Originally Posted by 2008 Warranty Guide
List of Parts Covered for 5 Years or 100,000 Miles (whichever
occurs first) by Emissions Warranties for Diesel Engines
• Air Flow Sensor
• Air Induction System
• Catalytic Converter (including
Diesel Particulate Filter and
Diesel Oxidation Catalyst)
• Cold Start Enrichment System
• Electronic Engine Control Sensors
and Switches
• Electronic Engine Control Unit
(ECU)
• Emissions Label
• Exhaust Gas Recirculation
(EGR) System
• Exhaust Manifold
• Fuel Injection System
• Fuel Injector Supply Manifold
• Intake Manifold
• Intercooler Assembly - Engine
Charger
• Malfunction Indicator Lamp
(MIL)/On-Board Diagnostic
(OBD) System
• PCV System and Oil Filler Cap
• Supercharger Assembly
• Throttle Body Assembly (MFI)
• Turbocharger Assembly
occurs first) by Emissions Warranties for Diesel Engines
• Air Flow Sensor
• Air Induction System
• Catalytic Converter (including
Diesel Particulate Filter and
Diesel Oxidation Catalyst)
• Cold Start Enrichment System
• Electronic Engine Control Sensors
and Switches
• Electronic Engine Control Unit
(ECU)
• Emissions Label
• Exhaust Gas Recirculation
(EGR) System
• Exhaust Manifold
• Fuel Injection System
• Fuel Injector Supply Manifold
• Intake Manifold
• Intercooler Assembly - Engine
Charger
• Malfunction Indicator Lamp
(MIL)/On-Board Diagnostic
(OBD) System
• PCV System and Oil Filler Cap
• Supercharger Assembly
• Throttle Body Assembly (MFI)
• Turbocharger Assembly
At least you were trying!
Tuned
Joined: Jul 2007
Posts: 413
Likes: 1
From: Tennessee
Thanks Tom, and as for those people who dont understand what an on ramp is for, I wholeheartedly agree. Nothing gets me more than being behind someone who doesnt realize that they are supposed to accelerate so they can merge INTO traffic, not pull out into traffic THEN accelerate. I can appreciate your position too because you have alot of gears to go through if you cant avoid these people and all that momentum is lost. Makes you want to just smack them sometimes.
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Super Moderator
Joined: Aug 2008
Posts: 37,379
Likes: 1,863
From: Frederick, MD
this is a safety issue and you both have done the right thing by insisting it get fixed. ssharber, at least now when you bring something to their attention they know that you are just not making something up.
I have a great relationship in that manner with my service advisor/diesel tech. Heck last time I dropped the truck off I gave the shuttle driver the keys and told him what the issue was.
I have a great relationship in that manner with my service advisor/diesel tech. Heck last time I dropped the truck off I gave the shuttle driver the keys and told him what the issue was.
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Elder User
Joined: Feb 2005
Posts: 588
Likes: 1
From: N.Ridgeville, Ohio
It is amazing how some dealers need to be forced into doing TSb's.. We had the same issues. We explained them to our local dealer and they did the TSB. It was a remarkable improvement. We have a dealer both in Ohio and here in Florida aneverytime the truck is in for service they check for the latest updates and as me if i want then done...
Junior User
Joined: Oct 2009
Posts: 64
Likes: 0
From: Southern DE
I agree with the safety issue. Nothing like pulling out onto a highway, only to fog the road (they can't see you beyond the cloud) and only be going 35mph on the other side! You're a sitting duck for getting rear ended.
On another note, anyone notice lower or slower to climb boost levels? Thats my only annoyance w/ this TSB.
On another note, anyone notice lower or slower to climb boost levels? Thats my only annoyance w/ this TSB.
Thread Starter
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Senior User
Joined: Oct 2008
Posts: 180
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I have heard about the reduced boost after the tsb and I will let you know my impressions. About the EGR, once the mechanic agreed this tsb needed to be done his comment was that he might as well go ahead and order the egr in case in needed to be replaced also.
Postmaster
Joined: Feb 2006
Posts: 3,201
Likes: 4
From: waynesville, mo.
Its amazing how many people still don't understand that a TSB is NOT A RECALL! TSBs are informational only and may/may not refer to your vehicle.
Super Moderator
Joined: Aug 2008
Posts: 37,379
Likes: 1,863
From: Frederick, MD
I think what he really mean't is the that most dealers/service advisors may not be open to even exploring the possiblity that the TSB in question might apply.
Post Fiend
Joined: Jan 2009
Posts: 6,521
Likes: 11
From: Greenwood, SC
About the slower boost climb, I do recall that issue when I got the new CAC. My "seat of the pants" feeling was that the boost felt like it got more grunt with less boost than before with the old CAC.
Lower/slower boost, more power to the ground is what I mean. Seemed like I though the new one was more productive. Been wrong before though! Here lately I have been driving around FL and I am feeling that the motor is getting swamped, seems sluggish. Is it the heat and humidity? It's really hot outside.
About the cooperation with TSB's, it's terrible almost everywhere. The folks at the service desk have to be schooled 6.4 techs and also the diesel tech in the garage needs to be schooled. Then, both (all) parties need to be disciplined enough to go to their service updates regularly. Otherwise, most of them don't know about the new TSB's or any other info. My diesel tech told me that he neglected to get his updates on his laptop for several months. Kinda drives me crazy but he's a cool guy.
Lower/slower boost, more power to the ground is what I mean. Seemed like I though the new one was more productive. Been wrong before though! Here lately I have been driving around FL and I am feeling that the motor is getting swamped, seems sluggish. Is it the heat and humidity? It's really hot outside.
About the cooperation with TSB's, it's terrible almost everywhere. The folks at the service desk have to be schooled 6.4 techs and also the diesel tech in the garage needs to be schooled. Then, both (all) parties need to be disciplined enough to go to their service updates regularly. Otherwise, most of them don't know about the new TSB's or any other info. My diesel tech told me that he neglected to get his updates on his laptop for several months. Kinda drives me crazy but he's a cool guy.
Junior User
Joined: Oct 2009
Posts: 64
Likes: 0
From: Southern DE
About the slower boost climb, I do recall that issue when I got the new CAC. My "seat of the pants" feeling was that the boost felt like it got more grunt with less boost than before with the old CAC.
Lower/slower boost, more power to the ground is what I mean. Seemed like I though the new one was more productive. Been wrong before though! Here lately I have been driving around FL and I am feeling that the motor is getting swamped, seems sluggish. Is it the heat and humidity? It's really hot outside....
Lower/slower boost, more power to the ground is what I mean. Seemed like I though the new one was more productive. Been wrong before though! Here lately I have been driving around FL and I am feeling that the motor is getting swamped, seems sluggish. Is it the heat and humidity? It's really hot outside....
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