Question about 1997-2000 FORD F150 EXT. CAB 3DR

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TRANSMISSION PROBLEMS COULD THE OVERDRIVE SWITCH OR A SENSOR NOT LET IT SHIFT IN ANY FORWARD GEARS

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Hello. Yes it can and some times if the transmission fillter has not been changed in a long time can cause the transmission not to work right.

Posted on Apr 19, 2014

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Posted on Jan 02, 2017

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1995 nissan sentra automatic trasmission will not go into passing gear


Gear shifts happen depending on how far the gas pedal is
pressed & the load on the vehicle

Transmission pressures change as you drive under different conditions,so the shifts happen at different speeds

There is no passing gear

If you have a 4 speed,you have 3 forward gears & an overdrive
forward gear, plus torque converter lock-up

You saying you have no 4th to 3rd downshift or whatever

Maybe the transaxle is failing mechanically inside-worn out

Mar 15, 2014 | Nissan Sentra Cars & Trucks

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My 1995 nissan quest overdrive light comes on when i start it and it wont go in drive but will 2nd gear, sometime on can turn the van off and restart and it will go in drive and shift ok but it shifts...


Sounds like the sensor for first gear.
The transmission comes with a shift sensor for each shift: if 4 shift, 4 sensor (including reverse).
Have somebody check the sensors and the cpu for the tranny. They go hand to hand.

Jun 28, 2017 | 1995 Nissan Quest

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Not shifting into overdrive on a 1500 chevy pick-up all four gears work but that one is there some kind of sensor that need to be replace.i have the 4l60e series trams


I'm not sure if your saying all four gears including reverse but that transmission only has four forward gears. Fourth gear is overdrive

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Shifting gears


the speed sensor is for Overdrive only, it does not shift the gears it sends the signal to the transmission control module that in turn signals the overdrive shift solenoid to engage/shift into OD.

May 11, 2009 | 1997 Dodge Grand Caravan

1 Answer

1999 nissan frontier overdrive problem


juan: there is a cable which comes from the transmission to the throttle linkage. This is called the TV (throttle valve) cable. This is designed to work in conjunction with the position of the throttle. I'm sure you heard the term "KICK DOWN SWITCH". Well this essentially is doing the same thing. If the cable is out of adjustment, it will have a tendency to want to downshift into 3rd.
Even though overdrive is electrically actuated, it can be disengaged by the throttle position.
There is also a coolant temp sensor which keeps the transmission from shifting into overdrive until the coolant temperature reaches a certain point. The sensor tells the ECM to tell the Solenoid it's ok to supply a ground to it.
Your overdrive switch provides a ground to actuate the overdrive solenoid. Make sure the switch has a solid ground serving the circuit.
The torque converter solenoid picks up it's ground from the ECM.
Both solenoids are served by the same power source which is a switched circuit through the ignition.
I hope I have shed some new light on your problem and given you some new direction in which to look. I hope I have helped you resolve your problem. If not, I'll be watching and will be ready to offer more help if needed. ..mybunkey

Apr 10, 2009 | 1999 Nissan Frontier

2 Answers

E4OD Trans stays in OD no matter where the shifter position is.


Transmission Description The E4OD transmission is a fully automatic, electronically controlled, four-speed unit with a torque converter clutch. The main operating components of the E4OD transmission include a torque converter clutch, six multiple-disc friction clutches, one band, one sprag one-way clutch and two roller one-way clutches that provide for the desired function of three planetary gear sets. Transmission gear selection in the (D) range and converter clutch operation is controlled by the powertrain control module (PCM) (12A650). Operating conditions are relayed to powertrain control module by various sensors throughout the vehicle. The powertrain control module compares these conditions with electronically stored parameters and logically determines how the transmission should operate. A torque converter (7902) couples the engine to the transmission gearset via the input shaft (7017) and the torque converter impeller hub. The impeller hub provides engine rpm to the positive displacement pump. The flow from the pump is proportional to engine rpm, and excess pump capacity is exhausted back to the pump inlet. The input shaft transfers power into the transmission gearset. The power input is controlled by the application of the torque converter clutch, which is scheduled through the powertrain control module. The application of the piston plate effectively replaces the hydraulic coupling between the converter cover and the turbine with a mechanical coupling between the converter cover and the turbine hub. This mechanical coupling helps improve fuel economy and wide-open throttle performance by eliminating converter slip. Transmission shift selection and torque converter clutch operation are controlled by the PCM. They are calibrated to provide the optimal transmission state. This state is commanded to the transmission solenoid body. In the (D) range, automatic operation of all four gears is possible. The transmission control switch, located on the vehicle's shift lever disables overdrive operation and enables automatic operation through the first three gears. Whenever the ignition switch is turned on, the vehicle will automatically provide overdrive operation regardless of the switch position the last time the vehicle was running. Manual gear selection is available in the 1 and 2 range. Second gear is commanded when the gearshift selector lever is in the 2 range and when downshifted into the 1 range at speeds above approximately 56 km/h (35 mph) (for diesel 48 km/h [30 mph]). First gear is commanded in the 1 range at start-ups and when downshifted into 1 range below approximately 56 km/h (35 mph) (for diesel 48 km/h [30 mph]). Any reference to intermediate brake drum or direct clutch cylinder are one and the same.
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I think this is your problem:

Programmable Speedometer/Odometer Module (PSOM): Description: The programmable speedometer/odometer module receives input from the rear brake anti-lock sensor, which is mounted on the rear axle differential housing. The PSOM processes this input signal information and relays it to the powertrain control module and the speed control module. This signal tells the powertrain control module the vehicle speed in miles per hour (mph). Used as an input in determining shift scheduling and electronic pressure control. Symptoms: Harsh engagements, firm shift feel, abnormal shift schedule, unexpected downshifts may occur at closed throttle, abnormal torque converter clutch operation or engages only at wide-open throttle (WOT). May flash transmission control indicator lamp. Diagnostic Trouble Codes: 452, P0500, P1500, P1501, P0503

Mar 21, 2009 | 1993 Ford F150 SuperCab

1 Answer

1999 Dodge Stratus error code P1788


This code sometimes comes up when the transmission is not shifting in overdrive.

Here is some research that I did and this is wut I found

This code is set whenever in any forward gear with engine speed above 1000 RPM shortly after a shift and every minute thereafter

After a shift into a forward gear, with engine speed > 1000 RPM, the TCM (Transmission Control Module) momentarily turns on element pressure to the clutch that don’t have pressure. For this to be activated, the switch must be closed in order for the circuitry to be completed. If the pressure switch does not close 2 times the code sets.

POSSIBLE CAUSES

RELATED DTC’S PRESENT
TRANSMISSION FLUID LEVEL
INTERMITTENT WIRING AND CONNECTORS
TRANSMISSION CONTROL RELAY OUTPUT CIRCUIT OPEN
2/4 PRESSURE SWITCH SENSE CIRCUIT OPEN
2/4 PRESSURE SWITCH SENSE CIRCUIT SHORT TO GROUND
2/4 PRESSURE SWITCH SENSE CIRCUIT SHORT TO VOLTAGE
INTERNAL TRANSMISSION
TCM - 2/4 HYDRAULIC PRESSURE

My advice to u is get to someone who is experienced about this kind of technology in order for the problem to be rectified.

Jan 23, 2009 | 1999 Dodge Stratus

1 Answer

L95 esocort ,lost forward gears,


It is the transmission showing a fault. Your local transmission shop should do a free diagnostic check. Its more than likely a shift soloneid problem inside the valves

Dec 25, 2008 | 1996 Ford Escort 4 Door

2 Answers

1995 buick century transmission trouble


Most likely causes is the OD shift solenoid or less likely the VSS

Oct 25, 2008 | 1995 Buick Century

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