pels есть вариант что у тебя проблема в соленойде 2 или перетерся к нему провод
Переведи и почитай помоему это твой случай
FORD 4R70W
COMPLAINT:
NEUTRALS IN 1ST GEAR FROM A STOP,
IN "D" RANGE ONLY (1996 AND LATER)
Some Ford Motor Company, 1996 and later vehicles equipped with the 4R70W transmission
may exhibit a neutral condition from a stop, when the Shift Selector is in the “D” range.
There may also be a Diagnostic Trouble Code P0755 stored, which is "Shift Solenoid 2
Electrical Circuit Fault". There can be three different causes for this concern.
CAUSE NO 1:
One cause for this condition may be that the PPL/ORG or VIO/ORG wire, which is model
dependant, and controls Shift Solenoid 2, may have rubbed on the rear of the engine, causing
the circuit to become grounded. When this occurs with the transmission in first gear, Shift
Solenoid 2 closes and fluid pressure acts to stroke the 3-4 Shift Valve to the right, causing the
Forward Clutch oil to exhaust through the 3-4 Shift Valve, creating the neutral condition.
Refer to Figure 86 for hydraulic schematic. Diagnostic Trouble Code (DTC) P0755 may
also be stored in memory.
CAUSE NO 2:
Another cause for this condition may be, the Solenoid Regulator Valve has become stuck
down, in the bottom of the Valve Body bore, causing the pressure in the Solenoid Regulator
Circuit to become higher than what the Shift Solenoid can exhaust. This will allow the
Shift Solenoid 2 pressure to build up and stroke the 3-4 Shift Valve to the right exhausting
the Forward Clutch oil, creating a neutral condition. Refer to Figure 87 for hydraulic
schematic. No Diagnostic Trouble Codes will be stored.
Refer to Figure 88 and 89 for valve identification.
CAUSE NO 3:
Cause 3 is almost identical to Cause 2 with the exception being that Shift Solenoid 2 is
sticking closed, or has debris built up at the solenoid exhaust hole, which will allow Shift
Solenoid 2 pressure to build up which causes the 3-4 Shift Valve to move to the right
exhausting the Forward Clutch oil, and once again creating the neutral condition. Refer to
Figure 87 for hydraulic schematic. No Diagnostic Trouble Codes will be stored.
CORRECTION:
To follow proper diagnostic procedure for this problem, attach a pressure gauge to the
Forward Clutch Pressure Port which is located on the right hand side of the transmission, as
shown in Figure 90. Normally when the Forward Clutch is applied, the pressure will be
equal to the Main Line pressure, as shown in Figure 91. When the above causes take place,
the pressure seen at the Forward Clutch will suddenly drop to zero, and this is when the
neutral condition will be felt.
(1)
Repair or replace the damaged Shift Solenoid 2 wire. Refer to Figure 92, for an index to
locate the proper year and model vehicle that you are working on, and refer to schematic for
that vehicle. Wire schematics have been provided in Figures 93, 94, 95 and 96.
(2)
Locate the Solenoid Regulator Valve in the Valve Body, as shown in Figure 88. To repair a
sticking Solenoid Regulator Valve, it may become necessary to replace the valve assembly.
There are replacement Solenoid Regulator Valve Kits available from aftermarket suppliers.
(3)
Replace the complete Shift Solenoid Assembly.