100 FORD 4R44E/55E and 5R44E/55E - .NET Framework

1 FORD100 2002 ATRA. All Rights Reserved. Printed in and 5R44E/55 ETCC ConcernsHow to Test the systemThe easiest way to test the TCC circuit is to know what s happening when thecomputer is ready to apply the TCC. Once all parameters are met, and the com-puter is ready to apply the TCC, the TCC solenoid is energized by the , the line pressure is supplied to the coast clutch regulator valve. Thecoast clutch regulator valve charges the TCC solenoid and now the TCC solenoidpulses the TCC regulator valve to apply the torque converter clutch. To determinewhether or not the converter, solenoid or both are causing the problem simplyenergize the TCC in the stall on the lift, or stationary.

2 This test is simply checkingthe integrity of the converter and the the engine Stalls: The converter is capable of locking-up and the valves defi-nitely moved and the problem may be in the regulation of the valves and the per-formance of the PWM the engine doesn t Stall: The first thing to check is the solenoid if the solenoidis working then the TCC charge has a leak in the system. This leak can be in anumber of different your scan tool, locate the parameter that says TCC% and TCCAMACT orTCC RPM on your data screen. These parameters will give you a quick look at thesystem. TCC% is the amount of duty cycle the computer is commanding the TCCsolenoid to pulse, usually this parameter runs between 90% and 100% on yourscanner.

3 TCCAMACT is the amount of slip RPM the computer is Reading:TCC %Varying between 90% and 100%TCCAMACTV arying between 0-10 RPMBAD Reading:TCC %Varying between 90% and 100%TCCAMCATV arying higher then 10 RPM and as high as 200 RPMFORD101 2002 ATRA. All Rights Reserved. Printed in and 5R44E/55 ETCC Concerns (continued)Torque converter concerns on 4r44e /4R55E/5R55E have been a constant con-cern. In recent years there have been a number of concerns related to torqueconverter apply as well as No cooler flow, Harsh TCC and Soft TCC engagement,No Lock-up or loss of TCC when hot. diagnosing torque converter problems can betroublesome.

4 The following pages have tips you can use to determine the are the common codes you will get:CodesDiscriptions628:Torque Converter Clutch Slip or ErrorP0740:Torque Converter Clutch System ProblemP0741:Torque Converter Clutch System Performance or Stuck OffP0742:Torque Converter Clutch System Stuck OffP0743:Torque Converter Clutch System ElectricalP1740:Torque Converter Clutch MalfunctionP1741:Torque Converter Clutch Control ErrorP1742:Torque Converter Clutch Solenoid Failed On, MIL Lamp OnP1743:Torque Converter Clutch Solenoid Failed On, TCIL Lamp ONP1744:Torque Converter Clutch Mechanical Noise or Stuck in OffPositionFORD102 2002 ATRA.

5 All Rights Reserved. Printed in and 5R44E/55 ETCC Concerns (continued)Damaged TCC SolenoidConcern: A no TCC apply on 1995 trough 1998 with a flashing overdrive light,DTC 628, P0741, P1740 or Cause: TCC solenoid (there were certain TCC solenoid s that were poorlydesigned and the result was the tip blowing out and the brackets were :Replace :Make sure not to reuse lot numbers between 769 and 771, these sole-noids are thecrimped area number locationFORD103 2002 ATRA. All Rights Reserved. Printed in and 5R44E/55 ETCC Concerns (continued)Torque Conver ter Clutch FailureSlip codes are very common. Make sure to diagnose converter codes correctlybefore replacing :No converter clutch Cause: Torque converter lining burnt or flaked :Replace 2002 ATRA.)

6 All Rights Reserved. Printed in and 5R44E/55 ETCC Concerns (continued)Separator Plate Feed Hole Modif icationModify the Separator plate to increase cooler flow. Cooler flow should be aminimum of 1 quart in 20 seconds. Make sure line pressure is within specifica-tion, high line pressures can cause low cooler :TCC slip, or insufficient cooler Cause: The separator plate may have the wrong size feed holes. Theconverter feed holes are normally between and .Repair: Drill the converter feed hole in the separator plate to for increasedcooler FORD105 2002 ATRA. All Rights Reserved. Printed in and 5R44E/55 ETCC Concerns (continued)Butt-cut Seal DamagedConcern: Slip or no TCC Cause: Seal broken or stator shaft worn or : Replace seal and check stator support for shaft wear or cracking aroundthe seal area.

7 If crack is evident replace seal for 2002 ATRA. All Rights Reserved. Printed in and 5R44E/55 ETCC Concerns (continued) Inner Pump Gear Seal DamagedConcern: TCC slipCommon Cause: Installing A4LD pump gears that don t have an O-ring, or correctpump gear inner O-ring damaged or missing. This will allow converter charge oilto leak into the converter bushing lube or drain back passage creating low con-verter : Install correct pump gears and O-ring. Inspect converter hub and lubri-cate prior to : Must have gear with 2002 ATRA. All Rights Reserved. Printed in and 5R44E/55 ETCC Concerns (continued)Pump and Spacer Plate DamageTo CoastClutchConver terConver terAlways inspect Pump assembly for damage, note any wear marks or warping andreplace if coolerCCLCCLCC/BPConver terConver terLubeFORD108 2002 ATRA.

8 All Rights Reserved. Printed in and 5R44E/55 ETCC Concerns (continued)Valve Body DamageThe valve body can cause many different TCC related problems. There are anumber of valves involved: Torque Converter Regulator Valve Torque Converter Modulator Valve Coast Clutch Shift Valve Thermostatic Bypass Valve Converter Relief ValveAnyone of these valves can cause a TCC : Slip or No TCC Cause: Wear in the Valve :Repair or Replace Valve 2002 ATRA. All Rights Reserved. Printed in and 5R44E/55 ETCC Concerns (continued)Valve Body DamageAlways check valve body sur face for warpingFORD110 2002 ATRA. All Rights Reserved. Printed in and 5R44E/55 ETCC Concerns (continued)Valve Body DamageRelease/A pplySolenoid Feed oilThermostatic Bypass valveand boreCoolerTo Front BandTcc Solenoid, valve and boreFORD111 2002 ATRA.

9 All Rights Reserved. Printed in and 5R44E/55 ETCC Concerns (continued)Valve Body DamageCoast Clutch Regulator Valve and BoreTCC Feed OilLine OilSolenoid Feed OilFORD112 2002 ATRA. All Rights Reserved. Printed in and 5R44E/55 ETCC Concerns (continued)Case and Bellhousing WarpageToCoolerToCoastClutchConver terConver terTo Conver terFORD113 2002 ATRA. All Rights Reserved. Printed in and 5R44E/55 ETCC Concerns (continued)Case and Bellhousing Warpage Conver terConver terTo Coast ClutchToCooler