1999-2018 Cummins TransGo Performance Reprogramming Shift Kit (45RFE-HD2)
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Regular price
$173.26 CAD
Product details
- Type Shift Kit
- Vendor TransGo
- SKU 45RFE-HD2
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TransGo Performance Shift Kit (45RFE-HD2)
1999 to 2018 Chrysler, Dodge, RAM and Jeep vehicles equipped with the 45RFE, 545RFE, 65RFE, 66RFE and 68RFE can develop excessive wear at the torque converter clutch (TCC) accumulator piston bore in the pump.
In order to control the converter clutch apply rate, the computer varies the pulse width modulation of the LR/CC solenoid. In doing so, the solenoid output acts on the TCC accumulator piston and the TCC regulator valve simultaneously. The purpose of the accumulator piston is to dampen the constant oscillation from the LR/CC solenoid and to influence the initial regulation rate of the converter clutch regulator valve.
When the TCC accumulator bore wears out, the LR/CC solenoid output can leak across the accumulator piston and onto its spring side, which is vented to the sump. Consequently, with the bore wear the TCC regulator valve will lose some of the LR/CC solenoid signal oil which will have an in-direct effect on the regulation of the converter clutch slippage. As a result, the lock-up clutch can slip, shudder, or even not apply at all. If the slip is severe enough and given enough time, the computer will then set a lock-up performance code.
These vehicles will also let the converter clutch slip speed ramp up slightly in between gear changes to make sure the shifts are smooth. When the TCC piston bore is worn the desired slip speed can go over the specified RPM amount during a gear change. With the resulting gain in engine RPM, it produces the sensation of a flare during the gear change.
- New torque converter limit valve system for both early and late pumps, saving the cost of a new pump
- Complete recalibration of the accumulator system
- Replacement self-cleaning low/reverse switch valve, as well as the end plug
- TCC recalibration
Corrects/Prevents/Reduces:
- Rough lock-up
- TCC slide bang
- TCC slip codes
- Drain-back
- Limp-in mode
- New torque converter limit valve system
- Heavy-duty accumulator plate/cover
- Recalibrated valve body accumulator springs
- Replacement self-cleaning low/reverse switch valve, as well as the end plug
- TransGo engineered accumulator seals
- Heavy-duty snap ring for input drum
- TCC recalibration accumulator springs and retainer
- Resistor for line pressure transducer (for pre 2005 models only)
1999 to 2018 Chrysler, Dodge, RAM, and Jeep vehicles equipped with 45RFE, 545RFE, 65RFE, 66RFE and 68RFE
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