The cac fix
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Senior User
Joined: Sep 2008
Posts: 135
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The cac fix
For hesitation in rainy or humid weather.
My Question is if your experiencing it is that hurting our engine's or turbo's
etc.
Dealer has part on order for me won't see til next week but want to drive to Maine of coarse in the rain. go for it or I'm I hurting anything,
I could really man up and take the bike
Thanks,, Happy forth to you all as well
My Question is if your experiencing it is that hurting our engine's or turbo's
etc.
Dealer has part on order for me won't see til next week but want to drive to Maine of coarse in the rain. go for it or I'm I hurting anything,
I could really man up and take the bike
Thanks,, Happy forth to you all as well
More Turbo
Joined: Sep 2007
Posts: 525
Likes: 8
From: Centerbrook, Ct.
I see in your sign. that your truck is a job#1 which means that you've been driving in the rain for a while now. I don't know if it really hurts anything, but I really doubt that 1 more time will matter. I just had mine done. I drove in a little rain since then (not much though), and so far, so good.
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Senior User
Joined: Sep 2008
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Yea, she not a daily driver. I've had this truck since last October and never experienced the highway issue until the last month here with this lousy
weather.
The problem fits the tsb perfectly just never experienced it till recently.
So then I'm not sure if it actually does any damage to anything either.
I would imagine that would be a tough debate....
Screw it I'll just drive it
weather.
The problem fits the tsb perfectly just never experienced it till recently.
So then I'm not sure if it actually does any damage to anything either.
I would imagine that would be a tough debate....
Screw it I'll just drive it
Post Fiend
Joined: Jan 2009
Posts: 6,521
Likes: 11
From: Greenwood, SC
For what it's worth my truck has been doing the sputter and smoke dance for two years. I do lots of highway driving with trailers in tow and when the rain was out, I pushed the motor just as hard as usual. There have been many times when I actually pushed the motor harder making the condition really bad so that I could make something either break or throw a code. While it has been under warranty I have really tried to make as much stuff break as possible and nothing has. My engine is running strong and I have the new CAC and it's great. I think the engine runs even better with it.
Senior User
Joined: Mar 2009
Posts: 354
Likes: 0
From: Patterson, Ca.
I am now on the final leg from central Ca. through Nevada, Idaho, Wyoming, Montana, Washington and now in Oregon. I am pulling a fiver and have noticed much better performance with the new CAC.
In tow/haul it seems to pull much better with higher boost and less down shifting. Hand calculated fuel mileage has increased 1 mpg. Not sure if that is the result of the CAC or the engine getting broken in.
In tow/haul it seems to pull much better with higher boost and less down shifting. Hand calculated fuel mileage has increased 1 mpg. Not sure if that is the result of the CAC or the engine getting broken in.
Super Moderator
Joined: Aug 2003
Posts: 25,479
Likes: 742
From: Isanti, MN
CAC = Charge Air Cooler.
Also known as an intercooler.
Cools the air coming out of your hot turbos before it goes into the engine. Since cooler air is more dense it increases the amount of air that goes into each cylinder, which increases the amount of power the engine can make, as well as lowering EGTs.
You don't need one because you already have one.
Also known as an intercooler.
Cools the air coming out of your hot turbos before it goes into the engine. Since cooler air is more dense it increases the amount of air that goes into each cylinder, which increases the amount of power the engine can make, as well as lowering EGTs.
You don't need one because you already have one.
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Senior User
Joined: May 2009
Posts: 137
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oh i know what an intercooler is and all that jazz just never heard it called a cac thanks though learn something everyday on here!
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More Turbo
Joined: Feb 2006
Posts: 565
Likes: 1
From: Middletown,NJ
I had the same issue with my job 2 '08 and just had it replaced last week. Been raining a bunch here in the northeast this summer, so it was a noticable issue. I'm still not certain why/how the engine was creating the smoke? Was the original CAC sucking in the water and blowing it through the engine? OR were the fins on the original part two small/close and not allowing the CAC to cool the air down enough before pumping it back in the engine creating the smoking condition?
Either way, now I have a shiny black new CAC which should make the truck run better.
Either way, now I have a shiny black new CAC which should make the truck run better.
Elder User
Joined: Feb 2009
Posts: 950
Likes: 0
From: nc
I had the same issue with my job 2 '08 and just had it replaced last week. Been raining a bunch here in the northeast this summer, so it was a noticable issue. I'm still not certain why/how the engine was creating the smoke? Was the original CAC sucking in the water and blowing it through the engine? OR were the fins on the original part two small/close and not allowing the CAC to cool the air down enough before pumping it back in the engine creating the smoking condition?
Either way, now I have a shiny black new CAC which should make the truck run better.
Either way, now I have a shiny black new CAC which should make the truck run better.
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