Exhaust Brake and '05 - 48re?

[10-9jc]

Has anyone heard anything thru the grapevine on D/C and

Jacobs EB for the '05 - 48re?

And -

Since it may be a "no hope" for anything from D/C . . . .

what EB are you using with your auto transmission '05?

Thanks,

JC

 

[thealaskan]

I too am curious. The 06 is the same transmission mods but somehow (I read) that the 05 doesn't allow software / flashing changes for the Jacobs dealer install. I also heard they are working on it.

 

[tandersen]

I saw a new '05 sitting on a dealers lot with a tag hanging on the rear view mirror advertising the jake brake. So?????????????

 

[Hoefler]

Dealer told me yesterday, the transmission is the same no mods needed. Problem is getting it to work with the foot feed. Apparently, there is no provision in the ecm for the wiring harness. They had tried to install one on an 05, but you had to control it manually.

 

[FMarino]

Brought my O5 in for an oil change in Phoenix. Larry Miller Dodge. Asked about the Jake Brake. They said the COULD INSTALL and quoted a price of 1800 out the door. Made sure he knew I had an automatic. They said they have already installed in auto transmission. I want to believe but would like to get verification for the source (D/C or Cummins) before I go 1800 out of pocket.

 

[jelag]

I have 2 dealers that tell me they have installed them on auto's... . I personally don't suggest it unless you spend the extra money to do something to lock up the torque coverter during de-acceleration. . Usually the transmission reduces the fluid pressure when you let your foot off the throttle... this lower pressure in the torque converter allows it to slip... and there is no enery to pass on to the engine for the exhaust brake to absorb... . A kit is available to do this... . and I've mentioned it before here... . ours is around 525. 00 and it holds the pressure up in the transmission until the rpm drop to something like 1000 or 1100 rpm and than it releases the pressure... .



This higher pressure... . is just holding pressure that was there during normal driving... thus the torque converter is locked allowing the hp to be transmitted through the transmission to the engine for the exhaust brake to do it's job... and as I remember holds the transmission in one of the gears... .



The Exhaust brake and this Comander kit connect to the ECM and the whole thing is seamless... . Hope this helps... .



Jim

 

[10-9jc]

Warranty, and?

For the "dealer installed" - apparently "some" dealers were installing

Jacobs EB on (at least) 04. 5's with TC lock-out control. Friend in

OR has one from dealer in Bend - dealer said no problem with

transmission warranty.

However, apparently D/C told them no more - not doing that anymore.

Obviously as Jelag (Jim) indicates with aftermarket mod/s it will work

fine. . . . but what will that do to the (transmission) warranty? [Think I

already know].



Wonder if the service writers that Hoefler and FMarino talked to were doing the previously mentioned set-up/s, or thinking an '05 was the same

as an '06, or? Would be good to pin these guys down - ask about the

warranty on the transmission with an EB . . . and if in the affirmative -"can

I get that in writing"?

Heard some dealers installing PacBrakes - could this be the case? Again

ask about warranty if you get a/the chance.



I asked a service manager at a local dealer, and it was a "no" if I wanted

to retain a warranty on the trans.



Lastly, Tanderson - was the '05 you saw on the lot an auto? If so, it

would (or would have ) been great to ask some questions about it!



Thanks for the replies - maybe I/we can drum up some more!

JC

 

[tandersen]

For the "dealer installed" - apparently "some" dealers were installing

Jacobs EB on (at least) 04. 5's with TC lock-out control. Friend in

OR has one from dealer in Bend - dealer said no problem with

transmission warranty.

However, apparently D/C told them no more - not doing that anymore.

Obviously as Jelag (Jim) indicates with aftermarket mod/s it will work

fine. . . . but what will that do to the (transmission) warranty? [Think I

already know].



Wonder if the service writers that Hoefler and FMarino talked to were doing the previously mentioned set-up/s, or thinking an '05 was the same

as an '06, or? Would be good to pin these guys down - ask about the

warranty on the transmission with an EB . . . and if in the affirmative -"can

I get that in writing"?

Heard some dealers installing PacBrakes - could this be the case? Again

ask about warranty if you get a/the chance.



I asked a service manager at a local dealer, and it was a "no" if I wanted

to retain a warranty on the trans.



Lastly, Tanderson - was the '05 you saw on the lot an auto? If so, it

would (or would have ) been great to ask some questions about it!



Thanks for the replies - maybe I/we can drum up some more!

JC

10-9jc it was an automatic but the dealer was closed and in a town 100 miles from my home. It was Lithia Dodge of Cherry Creek, Aurora, Co.

 

[donnier]

I asked the service writer at the local dealer about the Jake and was told that they couldnt do it.

Yet Cummins lists a brake for the 05 and it has the Cummins number and the Mopar #.

Whats up with that??

 

[p-Bar]

I asked the service writer at the local dealer about the Jake and was told that they couldnt do it.

Yet Cummins lists a brake for the 05 and it has the Cummins number and the Mopar #.

Whats up with that??

I think that was for the manual trans, I wouldn't do it , those service writers say yes, when it gets down to brass tacks your warranty will be voided. I n regards to the 04. 5 they will not give a date on the thrust washer install thats why they told that dealer no more. The torque convereter issue is the biggest thing as the other post say. If that convereter isn't locked upped you trash the trans.



Off of the Jacobs website:



The Jacobs Exhaust Brake for 2005 and prior model years will not be available The 2006 Jacobs Exhaust Brake will only work with the 48RE automatic transmission when mated to the Cummins 610 (in addition to the manual transmission Rams) in the 2006 Dodge Rams. However, Dodge and Cummins will continue to offer the Jacobs Exhaust Brake for manual transmission-equipped Dodge Rams for select prior model years.

 

[mpwalker]

2005 Jake Brake

I have a Jake brake installed on my 2005 48RE, problem is I can not use it. The dealer told me they had the brake for my truck then after installing it told me it would not work with a Auto because the software was not out yet for the 2005 auto's. Had a choice take it off or wait for the software which they said would be out soon, made a deal with them over the price since it was thier mistake and now waiting for the software. Was told they could make it work "in manual" how ever DC says it could cause warrenty problems so now I wait! It is too bad that DC does not fix this problem as it would make a good truck a great truck. I am hoping Cummins will allow the software to be developed and that Dodge will encourge them and then install it on my truck.

 

[p-Bar]

I have a Jake brake installed on my 2005 48RE, problem is I can not use it. The dealer told me they had the brake for my truck then after installing it told me it would not work with a Auto because the software was not out yet for the 2005 auto's. Had a choice take it off or wait for the software which they said would be out soon, made a deal with them over the price since it was thier mistake and now waiting for the software. Was told they could make it work "in manual" how ever DC says it could cause warrenty problems so now I wait! It is too bad that DC does not fix this problem as it would make a good truck a great truck. I am hoping Cummins will allow the software to be developed and that Dodge will encourge them and then install it on my truck.

Don't hold your breath, the Cummins engineer that oversaw the testing of the Jacobs said we don't have enough memory in the computer, quite extensive software so we are probably screwed.

 

[J.Post]

I read in the new TDR magazine yesterday that one of the problems is the 06's have both tow/haul mode and OD off mode on the shift stalk and the 05's were not set up for the OD off mode only the tow/haul mode.