3rd Gen DIY DIY: Tranny Line Pressure Booster
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This is a DIY on how to make/wire in a tranny line pressure ...
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06-28-2010, 05:16 PM
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#1 (permalink)
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Supporting Member
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DIY: Tranny Line Pressure Booster
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This is a DIY on how to make/wire in a tranny line pressure booster. This is very similar to a power wire, and will increase the line pressure in your tranny giving you slightly firmer shifts. In my case with the Sharadon Stage II tranny/ VB, it turned my crazy firm shifts into neck jerking shifts. I like it. I like it a lot. There are a number of different ways you can do this, and there is even a pre-made one sold online ($40+shipping).
Parts used:
5-Pack 2.2k Ohm resistors - $0.99
2x Electrical connectors - $3.98
a foot or so of 16-20awg wire
Heat Shrink tubing - $3.99
Tools used:
Wire stripper/crimper
Soldering Iron/solder
Heat gun
Knife
Step One:
Cut two 6" lengths of wire. Strip the ends/tin them. (note, soldering the connections is optional, but highly advised). crimp/solder on the male prongs onto one end of each wire. On the other end of the wires, crimp/solder on the female receptacles and the 2.2k ohm resistor bridging the two wires together. your end result should look like this:
Step Two:
Insert female receptacles into female connector.
Step Three:
Cut heat shrink tubing to length. Slide over wires and connector. Insert male prongs into male connector.
Step Four:
Use heat gun to shrink the tubing. this is what we will be wiring into the line pressure sensor on the tranny.
Step Five:
Locate and unplug the line pressure sensor. It is located on the rear passenger side of the tranny.
Step Six:
Locate the two wires on the sensor you will be working with. The sensor uses 3 wires, the two that are one on top of the other towards the front of the vehicle are the ones you want. wires 1 and 3 in the following pic.
Once you have the correct wires, cut them a few inches back from the sensor, and crimp/solder on the male/female prongs.
Step Seven:
Slide heat shrink tubing over the wires, and plug them into the male/female connectors. use heat gun to shrink the tubing.
thats it! you are all done. now you can plug the resistor connector we made earlier into your new connectors on the sensor. or if you want to take it out, just plug the 2 connectors into each other, and you are back to stock.
and here it is, plugged back into the tranny with the resistor in place.

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08-06-2011, 10:50 PM
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#2 (permalink)
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Senior Member
Join Date: Feb 2011
Location: Houston, TX
Name: Tyler
Age: 20
Posts: 1,513
Ram Year: 2006
Engine: 5.7 Hemi
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I know this is an old thread, but lets bring this alive. Its come to my attention that this little mod is pretty beneficial.
This is one of my little projects for tomorrow.
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Interior:LED Interior, Pioneer AVH4200, Complete Kicker Sound System 1600 Watts| Exterior: Halo Projectors w/ 5k HID, 5k HID Fogs, LED Tails, LED 3rd Brake Light, Debadged, Spray Liner, Cooper Zeon LTZ, Black Billet Lower Grill| Performace: 3.5" Cold Air Intake, Superchips, Magnaflow 22" Exhaust, Transmission Pressure Booster| Suspension: Bilstein Shocks, HellWig Anti-Sway Bar
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08-06-2011, 10:58 PM
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#3 (permalink)
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Supporting Member
Join Date: Jan 2011
Location: Lilburn,GA
Name: Nick
Age: 19
Posts: 2,061
Ram Year: 2005
Engine: 5.7 HEMI
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i like the idea, i was always told, its better to have a quick/firm shift instead of the stock smooth shift. heard it a lot easier on the transmission.
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08-06-2011, 11:22 PM
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#4 (permalink)
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Senior Member
Join Date: Jun 2011
Location: Ohio
Name: Aaron
Age: 26
Posts: 405
Ram Year: 2011
Engine: Hemi 5.7
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Which transmission is that a 45RFE?
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2011 Big Horn || 5.7 HEMI || AirRaid CAI || Borla Exhaust || BakFlip || BedRug
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08-07-2011, 12:02 AM
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#5 (permalink)
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Senior Member
Join Date: Feb 2011
Location: Houston, TX
Name: Tyler
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Engine: 5.7 Hemi
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It works on the 45RFE as well. Not sure if thats whats pictured though.
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Interior:LED Interior, Pioneer AVH4200, Complete Kicker Sound System 1600 Watts| Exterior: Halo Projectors w/ 5k HID, 5k HID Fogs, LED Tails, LED 3rd Brake Light, Debadged, Spray Liner, Cooper Zeon LTZ, Black Billet Lower Grill| Performace: 3.5" Cold Air Intake, Superchips, Magnaflow 22" Exhaust, Transmission Pressure Booster| Suspension: Bilstein Shocks, HellWig Anti-Sway Bar
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08-07-2011, 12:21 AM
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#6 (permalink)
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Senior Member
Join Date: Jun 2011
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Name: Aaron
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Engine: Hemi 5.7
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Originally Posted by sullivan
It works on the 45RFE as well. Not sure if thats whats pictured though.
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So is it correct to assume that it would work on the 545RFE as well?
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2011 Big Horn || 5.7 HEMI || AirRaid CAI || Borla Exhaust || BakFlip || BedRug
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08-07-2011, 12:28 AM
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#7 (permalink)
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Senior Member
Join Date: Feb 2011
Location: Houston, TX
Name: Tyler
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Ram Year: 2006
Engine: 5.7 Hemi
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Originally Posted by joetama
So is it correct to assume that it would work on the 545RFE as well?
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I see online the plug you can purchase for $45 + shipping goes to both trannys. So assuming that the guide is correct this will work for both.
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__________________
Interior:LED Interior, Pioneer AVH4200, Complete Kicker Sound System 1600 Watts| Exterior: Halo Projectors w/ 5k HID, 5k HID Fogs, LED Tails, LED 3rd Brake Light, Debadged, Spray Liner, Cooper Zeon LTZ, Black Billet Lower Grill| Performace: 3.5" Cold Air Intake, Superchips, Magnaflow 22" Exhaust, Transmission Pressure Booster| Suspension: Bilstein Shocks, HellWig Anti-Sway Bar
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08-07-2011, 05:36 PM
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#8 (permalink)
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Supporting Member
Join Date: Jun 2010
Location: Naha-shi, Okinawa, Japan
Name: John
Age: 26
Posts: 1,337
Ram Year: 2004 Quad Cab 2500 *Sold*
Engine: Hemi 5.7
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yes it will work on the 545RFE and the 45RFE. pictured is the 545. they are both the same transmissions, just a difference in tuning.
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2000 Honda Inspire (Acura TL) 2.5l v6 auto, right hand drive. tinted, lowered, debadged, basically riced out to the max!
1996 Mitsubishi Delica Space Gear. 4x4 3.0l v6, bull bars front and rear, side steps, full skid plates.

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08-07-2011, 05:56 PM
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#9 (permalink)
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Senior Member
Join Date: Feb 2011
Location: Houston, TX
Name: Tyler
Age: 20
Posts: 1,513
Ram Year: 2006
Engine: 5.7 Hemi
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John, how exactly did you determine was resistance value was needed, slightly curious
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__________________
Interior:LED Interior, Pioneer AVH4200, Complete Kicker Sound System 1600 Watts| Exterior: Halo Projectors w/ 5k HID, 5k HID Fogs, LED Tails, LED 3rd Brake Light, Debadged, Spray Liner, Cooper Zeon LTZ, Black Billet Lower Grill| Performace: 3.5" Cold Air Intake, Superchips, Magnaflow 22" Exhaust, Transmission Pressure Booster| Suspension: Bilstein Shocks, HellWig Anti-Sway Bar
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08-07-2011, 10:27 PM
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#10 (permalink)
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Supporting Member
Join Date: Jun 2010
Location: Naha-shi, Okinawa, Japan
Name: John
Age: 26
Posts: 1,337
Ram Year: 2004 Quad Cab 2500 *Sold*
Engine: Hemi 5.7
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thats the value transgo said to use. same resistor also comes with their shift kits.
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__________________
2000 Honda Inspire (Acura TL) 2.5l v6 auto, right hand drive. tinted, lowered, debadged, basically riced out to the max!
1996 Mitsubishi Delica Space Gear. 4x4 3.0l v6, bull bars front and rear, side steps, full skid plates.

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