Question about 1988 Ford F 150

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Transmission need to set pressure on transmission

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This is what is called a C6 trans. On the side of the trans the is a 4 inch circle with a snap ring in it. Take the snap ring out and tap the circle easy and it should pop right out. There is a adjustment bolt with a lock nut on it. Loosen the lock nut and turn the adjustment bolt one turn any more and it could damage ya trans. Lock the lock nut back down and test drive. If it is doing the same as before then ya trans needs to be rebuilt. If not ya golden.

Posted on Dec 02, 2012

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How to fix po1781 code on a 2001 dodge intrepid?


You will need automotive electrical experience to trouble shoot.
Hope this helps.

P1781 O/D Pressure Switch Sense Circuit Malfunction - With Automatic Transmission Possible Causes Setting Conditions • O/D pressure switch connector is damaged (check pins for damage, moisture) • O/D pressure switch is open, shorted to ground or shorted to voltage • O/D pressure switch has failed • TCM connector is damaged (check pins for damage, and for moisture) • Transmission relay connector is damaged (check pins for damage, moisture) • Transmission relay output circuit is open

May 13, 2015 | 2001 Dodge Intrepid

1 Answer

Po846


DTC P0846 - Transmission Fluid Pressure Sensor/Switch "B" Circuit Range/Performance

The pressure sensor codes are the ones to concentrate on first. typically gear ratio error codes are set from internal transmission failures but since you also have pressure sensor codes it may just need a new sensor. Remove the connector to the solenoid pack and check for broken or damaged pins and also see if water is getting into the connector.

The chances are that the sensor is bad. If that is the only code your getting then you might want to replace the sensor. Make sure the trans is full though, as that would make the pressure low and could set the code. Here is where the sensor is.

REMOVAL
1. Raise vehicle.
2. Place a suitable fluid catch pan under the transmission.

2_14_2012_3_14_19_pm.gif

1. Remove the wiring connector from the line pressure sensor (Fig. 83).
2. Remove the bolt holding the line pressure sensor to the transmission case.
3. Remove the line pressure sensor from the transmission case.

INSTALLATION
1. Install the line pressure sensor into the transmission case.
2. Install the bolt to hold the line pressure sensor into the transmission case. Tighten the bolt to 11.9 Nm (105 in. lbs.) .
3. Install the wiring connector onto the line pressure sensor
4. Verify the transmission fluid level. Add fluid as necessary.
5. Lower vehicle.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Feb 14, 2012 | 2002 Jeep Liberty

2 Answers

I have a 2004 Jeep Wrangler 4 cyl. The CEL came on. Had no power for a little bit. Went to autozone and it pulled code P0870. Any suggestions.


po 870 refers to transmission fluid pressure- check fluid level of trans while parked with engine running and the jeep level.- if level is ok- might be time to have filter and fluid changed

Sep 15, 2011 | 2004 Jeep Wrangler

1 Answer

I live in Ohio and my 1998 Mercury Villager wont pass E-Check . They said it is the pressure control solenoid . I need to know where the pressure control solenoid is located and where I can buy one .


The transmission pressure control solenoid? On the valve body inside the transmission pan. VB will need to be removed and all solenoids replaced ( the come as a set wired together). Will need some skill and experience to do this job successfully.

Jan 20, 2011 | 1998 Mercury Villager

1 Answer

I had a tranny gasket leak i changed it and about 2 days later engine light came on took it to the local auto parts and put the computer on it. he gave me the code P 1757 said it had something to do with...


Hope this can help:

P1757 Transmission control pressure not equal to target. (Zero pressure problem)

Theory of Operation
The Governor Pressure Control System is used to regulate the governor pressure which controls the shifts for first, second, and third gear. The Governor Pressure Control System test verifies that the requested pressure and the actual pressure are within a predetermined tolerance.

When Monitored:
While the engine is running and the gear selector is in the Drive position.

Set Condition:
This DTC will set if the monitored Governor Pressure is greater than 41.4 kPa (6 psi) for 5 seconds while the gear selector is in the Drive position with the road speed equal to zero - six times during a drive cycle. The transmission oil temperature must be between 23 - 88° C (73 - 190° F).

Possible Causes
OTHER TRANSMISSION DTC'S PRESENT
5 VOLT SUPPLY CIRCUIT OPEN
5 VOLT SUPPLY CIRCUIT OPEN INSIDE THE TRANSMISSION
TRANSMISSION OIL BURNT OR OIL PAN HAS EXCESSIVE DEBRIS - INTERNAL TRANSMISSION DAMAGE
GOVERNOR PRESSURE SENSOR
GOVERNOR PRESSURE SOLENOID
VALVE BODY
ENGINE CONTROL MODULE 5 VOLT SUPPLY
ENGINE CONTROL MODULE

Jan 12, 2011 | Dodge Ram 3500 Cars & Trucks

1 Answer

I have Jeep 2002 grand cherkee check engine coming with code P0871, i need your help to solve it


DTC P0871: OD PRESSURE SWITCH SENSE CIRCUIT

DTC P0871 will set if one of the pressure switches are open or closed at wrong time in a given gear. Transmission system will default to immediate shutdown routine.

The following items may be area of concern:
Related relay DTCs present.
Transmission control relay output circuit open.
Pressure switch inoperative.
Intermittent wiring and connector problems.
OD pressure switch sense circuit open.
OD pressure switch sense circuit shorted to ground.
OD pressure switch sense circuit shorted to voltage.
Faulty TCM.

I've gone through some of the diagnostics on this and unless your an expert at transmission concerns I would get some expert help with this one.

Dec 16, 2010 | Jeep Grand Cherokee Cars & Trucks

2 Answers

Our 2003 Durango RT will not reverse while in reverse. The car just Idles there. We hear the car switch gears, but nothing happens. What could be problem?


This is one of two things, if the truck goes into drive and moves then you have trany problems and may need to have it rebuilt, if there is no movement in reverse or drive then it could be the transfer case or trany.

Dec 11, 2010 | 2003 Dodge Durango

1 Answer

Que falla es este codigo P 1727 de una gran cherokee


Hi,
DTC P1727 - 4c hydraulic pressure switch circuit- this is set if pressure switch doesnt close on command from the TCM(transmission control module)
There are wide ranging possible causes:
  • open in trans control relay output circuit
  • intermittent wiring or connector problems
  • internal transmission problem(4th clutch pressure plate)
  • excessive debris in transmission pan
  • incorrect fluid level
  • 4th clutch pressure switch circuit shorted to voltage
  • faulty line pressure sensor
  • poor line pressure sensor connection
  • 5-volt supply open or shorted to ground
  • Faulty TCM

In order to diagnose the exact problem, you will need a diagnostic scan tool with transmission diagnostic capability. You will also need a transmission simulator to hook up to trans in order to test.
Without these REQUIRED equipment, about all you can check is for debris in the transmission pan, and ensuring that fluid level is correct. After that, the only way to determine which of the many reasons for this code being set is with use of above mentioned equipment. Unfortunately, due to the complexity of today's vehicles, including their multiple on-board computers,there are instances when the only way to properly diagnose a problem correctly is with a diagnsotic scanner. Without this, all you can do is replace parts in hope of repairing problem.

Jul 18, 2010 | 2000 Jeep Cherokee

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

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