Jake Brake on 2003 48RE
08-20-2003 | 10:18 PM
#16
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Joined: Dec 2002
Posts: 741
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From: Long Island, NY
Re:Jake Brake on 2003 48RE
[quote author=thecatsfan link=board=11;threadid=18006;start=0#msg170760 date=1060538008]
Here is a direct quote from Jacobs website as of today:
"Jacobs Exhaust Brake will be available for 2003 Cummins-powered Dodge Ram trucks with the 48RE Automatic Transmission. Stay tuned for approved release date."
[/quote]
where did u read this i just checked the jacobs site and it said they nor dodge have any intention of releasing a factory aproved brake for the 2003.
Here is a direct quote from Jacobs website as of today:
"Jacobs Exhaust Brake will be available for 2003 Cummins-powered Dodge Ram trucks with the 48RE Automatic Transmission. Stay tuned for approved release date."
[/quote]
where did u read this i just checked the jacobs site and it said they nor dodge have any intention of releasing a factory aproved brake for the 2003.
08-20-2003 | 11:52 PM
#17
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Joined: Oct 2002
Posts: 638
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From: Logan, Utah
Re:Jake Brake on 2003 48RE
[quote author=rvlady link=board=11;threadid=18006;start=0#msg169607 date=1060292263]
by the time you figure the value of the things my husband got thrown in--wheel well liners, oil and filter change, serpentine belt, and a few more goodies. [/quote]
Do yourself a favor and verify that you have the correct serpentine belt. The e-brake adds a belt driven vacuum pump that requires a different belt than the factory supplied belt. This alternate belt might not show up in the computer for a truck with an automatic. Call the parts counter at your dealership and ask them for the standard belt part number and see if it matches the one on the belt they threw in. If it does, you have the wrong belt.
by the time you figure the value of the things my husband got thrown in--wheel well liners, oil and filter change, serpentine belt, and a few more goodies. [/quote]
Do yourself a favor and verify that you have the correct serpentine belt. The e-brake adds a belt driven vacuum pump that requires a different belt than the factory supplied belt. This alternate belt might not show up in the computer for a truck with an automatic. Call the parts counter at your dealership and ask them for the standard belt part number and see if it matches the one on the belt they threw in. If it does, you have the wrong belt.
08-21-2003 | 09:50 AM
#20
Registered User
Joined: Mar 2003
Posts: 244
Likes: 1
From: Windsor, Colorado
Re:Jake Brake on 2003 48RE
[quote author=DF5152 link=board=11;threadid=18006;start=15#msg175106 date=1061435923]
[quote author=thecatsfan link=board=11;threadid=18006;start=0#msg170760 date=1060538008]
Here is a direct quote from Jacobs website as of today:
"Jacobs Exhaust Brake will be available for 2003 Cummins-powered Dodge Ram trucks with the 48RE Automatic Transmission. Stay tuned for approved release date."
[/quote]
where did u read this i just checked the jacobs site and it said they nor dodge have any intention of releasing a factory aproved brake for the 2003.
[/quote]
You're right. Jacobs has changed the info on their website within the last week. The quote I pulled from Jacobs was still on their site as of the 14th.
Something seems odd about the whole 2003 vs. 2004 model difference for the 48RE and the Jacobs brake. The 48RE wasn't introduced until Jan, 2003. 2004 trucks with the 48RE trannies have been rolling off the assembly line since June, maybe even May. Is there really a major hardware change in the 48RE tranny only 4 or 5 months after its release? Or is there going to be another 1/2 year model change with the tranny?
Makes me think one of two things must be true. Either the 48RE was released prematurely and they had to make hardware changes to it already ???, or Jacobs, Cummins and DC are looking for an easy answer to explain the delayed release of the brake.
[quote author=thecatsfan link=board=11;threadid=18006;start=0#msg170760 date=1060538008]
Here is a direct quote from Jacobs website as of today:
"Jacobs Exhaust Brake will be available for 2003 Cummins-powered Dodge Ram trucks with the 48RE Automatic Transmission. Stay tuned for approved release date."
[/quote]
where did u read this i just checked the jacobs site and it said they nor dodge have any intention of releasing a factory aproved brake for the 2003.
[/quote]
You're right. Jacobs has changed the info on their website within the last week. The quote I pulled from Jacobs was still on their site as of the 14th.
Something seems odd about the whole 2003 vs. 2004 model difference for the 48RE and the Jacobs brake. The 48RE wasn't introduced until Jan, 2003. 2004 trucks with the 48RE trannies have been rolling off the assembly line since June, maybe even May. Is there really a major hardware change in the 48RE tranny only 4 or 5 months after its release? Or is there going to be another 1/2 year model change with the tranny?
Makes me think one of two things must be true. Either the 48RE was released prematurely and they had to make hardware changes to it already ???, or Jacobs, Cummins and DC are looking for an easy answer to explain the delayed release of the brake.
08-22-2003 | 12:03 PM
#21
Registered User
Joined: Aug 2003
Posts: 438
Likes: 0
From: Colorado
Re:Jake Brake on 2003 48RE
I was told by my dealer (prior to buying the truck) that the
Jake brake could be installed and covered under the 7/70.
A few weeks later when I asked the dealership again they
gave me another answer. I then pressed them and requested that they call DC engineering for a real answer as I wanted
mine installed soon...4 days later they told me that the 48RE
is compatiable with the Jacobs exhaust brake "BUT" the controller required is not yet available !!!
They also said they had no date for the fix or when I could
expect to get it installed...This really pisses me off...I wanted
to camp this fall in the mountains and now I'll have to wait
until this all gets worked out...Its amazing to me that certain
dealers install it and other wont !!!
Jake brake could be installed and covered under the 7/70.
A few weeks later when I asked the dealership again they
gave me another answer. I then pressed them and requested that they call DC engineering for a real answer as I wanted
mine installed soon...4 days later they told me that the 48RE
is compatiable with the Jacobs exhaust brake "BUT" the controller required is not yet available !!!
They also said they had no date for the fix or when I could
expect to get it installed...This really pisses me off...I wanted
to camp this fall in the mountains and now I'll have to wait
until this all gets worked out...Its amazing to me that certain
dealers install it and other wont !!!
08-24-2003 | 01:57 PM
#22
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Joined: Aug 2003
Posts: 615
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From: Maryland
Re:Jake Brake on 2003 48RE
FROM TDR Messageboard
Information
From: Robert Patton
I have had occasion to discuss this subject with TDR writer, John Holmes. John and Polly own a 2003 truck with the 48RE transmission, and he is close to doing an exhaust brake installation on their truck.
As most of you know, John works at Caron Dodge in Carson City, NV. Their dealership has several excellent transmission technicians.
With this motivation to do an exhaust brake installation and the connections to get answers, I asked John to do some research. His comment, "Yea, I've got to dot the "i's" and cross the "t's" 'cause it looks like I'm going to be my own warranty station if I install an exhaust brake on our '03 truck."
John confirms that R. McCulloch is on the right track as he suspects that "the controlling software is the problem and that the combination isn't working in the manner that they want it to; it is not a seamless automatic interface."
Further details on the controlling software: with the '03 trucks with the 47RE and '03.5 trucks with the 48RE transmission, the transmission is controlled using Chrysler's powertrain control module (PCM). The '04 trucks will use the Cummins' engine control module (ECM) to control the transmission. As there will be changes to the engine to meet 1/1/04 emissions standards, Dodge and Cummins have targeted this date as the release of approval for exhaust brakes with automatic transmissions.
Effectively, this leaves '03/47RE, '03.5/48RE and '04/48RE customers in limbo as to warranty approval. Speculation has it that the early '04/48RE customer (these trucks are equipped with the Cummins ECM) will be approved for exhaust brake usage, but it will require a reflash of the engine's ECM.
As stated, the '03/47RE and '03.5/48RE are controlled with Chrysler's PCM. Countless hours were spent trying to make the PCM compatible with an exhaust brake in all driving conditions. Key words in the preceding sentence, "countless hours" and "all driving conditions." As you read, these ’03 vehicles will not be approved for exhaust brake usage.
<snip>
Information
From: Robert Patton
I have had occasion to discuss this subject with TDR writer, John Holmes. John and Polly own a 2003 truck with the 48RE transmission, and he is close to doing an exhaust brake installation on their truck.
As most of you know, John works at Caron Dodge in Carson City, NV. Their dealership has several excellent transmission technicians.
With this motivation to do an exhaust brake installation and the connections to get answers, I asked John to do some research. His comment, "Yea, I've got to dot the "i's" and cross the "t's" 'cause it looks like I'm going to be my own warranty station if I install an exhaust brake on our '03 truck."
John confirms that R. McCulloch is on the right track as he suspects that "the controlling software is the problem and that the combination isn't working in the manner that they want it to; it is not a seamless automatic interface."
Further details on the controlling software: with the '03 trucks with the 47RE and '03.5 trucks with the 48RE transmission, the transmission is controlled using Chrysler's powertrain control module (PCM). The '04 trucks will use the Cummins' engine control module (ECM) to control the transmission. As there will be changes to the engine to meet 1/1/04 emissions standards, Dodge and Cummins have targeted this date as the release of approval for exhaust brakes with automatic transmissions.
Effectively, this leaves '03/47RE, '03.5/48RE and '04/48RE customers in limbo as to warranty approval. Speculation has it that the early '04/48RE customer (these trucks are equipped with the Cummins ECM) will be approved for exhaust brake usage, but it will require a reflash of the engine's ECM.
As stated, the '03/47RE and '03.5/48RE are controlled with Chrysler's PCM. Countless hours were spent trying to make the PCM compatible with an exhaust brake in all driving conditions. Key words in the preceding sentence, "countless hours" and "all driving conditions." As you read, these ’03 vehicles will not be approved for exhaust brake usage.
<snip>
09-04-2003 | 11:00 PM
#23
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Joined: Mar 2002
Posts: 69
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From: Red Deer, Alberta, Canada
Re:Jake Brake on 2003 48RE
would like to know...................this brake your talking about, is it a true Jake Brake or just an exhaust brake that is called a Jake brake? Pick-up engines have exhaust brakes, but the big boys have Jake brakes. There is a difference, and I wasn't aware that they had a Jake that would close the valves and turn the engine into a compressor for the smaller engines that are in pick-ups. So clear this up for me guy's.
Oh Sick
Oh Sick
09-04-2003 | 11:17 PM
#25
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Joined: Jul 2003
Posts: 7,129
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From: The Great White North
Re:Jake Brake on 2003 48RE
People are just calling it a Jake because its made by Jacobs - its not an engine brake - its an exhaust brake. As I understand it, the exhaust brake has a valve installed in the exhaust and simply modulates this valve to make use of compression which in turn assists in braking.
09-05-2003 | 04:36 PM
#27
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Joined: Mar 2003
Posts: 244
Likes: 1
From: Windsor, Colorado
Re:Jake Brake on 2003 48RE
Actually, that's exactly why I am very cautious to refer to them as the Jacobs exhaust brake, because the words Jake Brake have a very different meaning. They're both made by Jacobs but that's where the similarity ends.
09-05-2003 | 04:45 PM
#28
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Joined: Jan 2003
Posts: 1,358
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From: FL
Re:Jake Brake on 2003 48RE
If you really want to get technical it is actually called an engine retarder. Mack has (had) their own, Cummins has the Jacob brake, I'm sure CAT and Detroit have tried to build one on their own also.
09-08-2003 | 02:23 PM
#29
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Joined: Mar 2003
Posts: 244
Likes: 1
From: Windsor, Colorado
Re:Jake Brake on 2003 48RE
Since you brought it up, it's actually an exhaust retarder. It slows the exhaust and has no direct interaction with the engine.
A Jake Brake would be an engine retarder.
A Jake Brake would be an engine retarder.
09-08-2003 | 06:27 PM
#30
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Joined: Jan 2003
Posts: 1,358
Likes: 0
From: FL
Re:Jake Brake on 2003 48RE
[quote author=thecatsfan link=board=11;threadid=18006;start=15#msg182052 date=1063049003]
Since you brought it up, it's actually an exhaust retarder. It slows the exhaust and has no direct interaction with the engine.
A Jake Brake would be an engine retarder.
[/quote]
My quote was referring to an engine brake (the cam operated thingie on the big trucks)
Since you brought it up, it's actually an exhaust retarder. It slows the exhaust and has no direct interaction with the engine.
A Jake Brake would be an engine retarder.
[/quote]
My quote was referring to an engine brake (the cam operated thingie on the big trucks)
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