Question about 1985 Volvo 740

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Discoonnect overdrive overdrive stuck in on position

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Owners manual should show you how to Unlock this . usually a button recessed next to the shifter.........if it's an automatic.......

Posted on Apr 12, 2014

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1993 jeep grand cherokee is stuck in second gear, the overdrive button is not functioning, and getting the data control center says service 4wd switch


wow no engine size stated, the 5.2L run a special trans... so....
hopeless to help you much.
zj jeep with automatic.
it didnt lie, it told you to service it, so take it to a shop and let the work on this old dog..
stuck , now what does that mean.
the shift lever lever stuck, or its cable failing end to end.? or?
or shifts from 1 to 2 and hangs there.
or down shifts from 3 to 2 and and hangs there
DIY ? question is that it? you never said intentions.....
so we open the 93 ZJ book and what do we see.
ax-15 stick box, seems not.
the aw-4 auto , electronically shifted with TSM (scan it yet?)
and the 46RH auto. used on the 5.2L, has no TCM brain.
its a Hydramatic.
here are the OD words off the 46h page

Overdrive Control Switch
The overdrive control switch is located in the instrument
panel. In the On position, automatic shifts
into fourth gear overdrive will occur. In the Off position,
the switch overrides the powertrain control module
preventing a shift to overdrive fourth gear range.
The switch has an indicator light that illuminates
when overdrive is turned off. The switch also resets
when the ignition key is turned to the OFF position
so that the automatic overdrive feature is restored.
The use of fault codes is employed to help diagnose
the electronic components that operate the overdrive
unit and torque converter clutch.

Jul 16, 2016 | 1993 Jeep Grand Cherokee

1 Answer

42re tranny in my 93 jgc seems to be stuck in low gear. 1st & 2nd seem to be the same and won't shift automatically at all. Will not shift into overdrive. Changed throttle position sensor, new tranny


if its not shifting make sure fluids are full (I'm sure you did) im just saying is your speed sensor on trany pluged in , and your throttle return cable from trany to fuel return hooked up

Feb 09, 2015 | 1993 Jeep Grand Cherokee

1 Answer

My 2000 Dodge Durango has no overdrive what do I do


Hi EVE , I would suggest you take it to a reputable ASE Certified repair shop ! Do you know what transmission you have there are three different ones for your vehicle along with three different engine possibility's ! It could be the switch or a solenoid in side the transmission or a wiring problem or even a control module problem !

OVERDRIVE OFF SWITCH

DESCRIPTION The overdrive OFF (control) switch is located in the shift lever arm.
OPERATION The switch is a momentary contact device that signals the PCM to toggle current status of the overdrive function. At key-on, overdrive operation is allowed. Pressing the switch once causes the overdrive OFF mode to be entered and the overdrive OFF switch lamp to be illuminated. Pressing the switch a second time causes normal overdrive operation to be restored and the overdrive lamp to be turned off. The overdrive OFF mode defaults to ON after the ignition switch is cycled OFF and ON. The normal position for the control switch is the ON position. The switch must be in this position to energize the solenoid and allow a 3-4 upshift. The control switch indicator light illuminates only when the overdrive switch is turned to the OFF position, or when illuminated by the transmission control module.

OVERDRIVE ELECTRICAL CONTROLS

The overdrive off switch, valve body solenoid, case connectors and related wiring can all be tested with a 12 volt test lamp or a volt/ohmmeter. Check continuity of each component when diagnosis indicates this is necessary. Refer to Group 8W, Wiring Diagrams, for component locations and circuit information.
Switch and solenoid continuity should be checked whenever the transmission fails to shift into fourth gear range.

Feb 08, 2015 | Dodge Cars & Trucks

1 Answer

Apparently my 1995 volvo 740 is stuck in overdrive, ive taken the switch out but its still on, we think some wires may be touching, does anyone know where the overdrive box is, please ?


Overdrive (assuming it's manual) is controlled by a solenoid mounted on the overdrive unit (type P) itself. On the M46 transmission, it is mounted on the lower left side. That solenoid is controlled by a relay in the electrical console, behind the ashtray. These solenoids are a known problem with the M46 and many owners install an 'overdrive delete' cover in its place.

If you have an automatic, there is a relay in a similar position controlling a similar solenoid.

On either transmission, trace the wires from the transmission case to the interior and verify that they are not chafed or rubbing the body ground points.

Aug 09, 2013 | 1988 Volvo 740

1 Answer

I have a 94 Jeep Grand Cherokee locks up in overdrive. I can turn off the overdrive and the transmission shifts beautifully. Not sluggish on take off at all. At a loss on what it could be any help would be...


Bad sensor. Cannot say exaclty which one, but I would assume the throttle position sensor. Could possibly be the switch on the shifter needs replacing, or the overdirve relay needs to be replaced.

Below is a method you can "self diagnose"


To get codes out of the Transmission Control Module (TCM). The lamp in the Overdrive OFF switch is used to signal the various flash codes. To view flash codes, proceed as follows:

  1. Turn ignition key ON-OFF-ON-OFF-ON finally leaving the key in the ON position. Leave the Overdrive OFF Switch in the normal overdrive (ON) position.
  2. Immediately begin counting the number of flashes displayed by the Overdrive OFF Switch indicator lamp.
  3. Flash codes will correspond to Powertrain Control Module codes in duration and spacing.
  4. A code 55 identifies the end of flash code transmission.
And the possible codes are:

  • 11 No Engine Speed Sensor Signal
  • 12 No Output Shaft Sensor Signal
  • 13 No Vehicle Speed Sensor Signal
  • 14 Governor Pressure Sensor Signal
  • 15 Throttle Position Signal
  • 16 Transmission Temperature Sensor
  • 17 Overdrive Off Switch Circuit
  • 18 System Voltage Out of Limits
  • 19 Standby Voltage Out of Limits
  • 21 Governor Pressure Solenoid Circuit
  • 22 3-4 Solenoid Circuit
  • 23 Torque Converter Clutch Circuit
  • 24 Overdrive Off Lamp Circuit
  • 25 EEPROM Checksum Error
  • 26 Governor Pressure Sensor Offset Drift
  • 55 End of Message
If you still get no codes, then we have to explore a mechanical problem inside the transmission. Possibly the overdrive solenoid not venting or a lower valve body malfunction.

best of luck and let us know?

Mar 01, 2013 | Cars & Trucks

1 Answer

2001 mazda 626 code p1744


P1744 - Torque Converter Clutch System Stuck in Off Position.

Either way the problem points to an internal transmission problem.
1. Drive it and see if the codes come back, and see if it is slipping in overdrive.

2. Check the transmission pressure in drive, with the overdrive on and the transmission slipping.

These transmissions have a high failure rate. Have seen internal transmission slippage that showed up in drive with the Overdrive (OD) switch on, but not with the OD switched off. It was related to the coasting clutch being on and off in that range. In that case, there was an internal mechanical transmission problem. We recommend a rebuilt transmission from the dealer and an external transmission cooler - the new rebuilt transmission will last longer.

Good luck (remember to rate this free answer).

Aug 11, 2011 | 2001 Mazda 626

1 Answer

Wont shift into overdrive


Hi, overdrive is controlled differently from other gears. Low vacuum or a bad Throttle position sensor can keep it out of overdrive. People will be happy to put a rebuilt transmission in for you, but that probably wouldn't solve the problem. You should check the Low vacuum or a bad Throttle position sensor and replace the faulty one..

Jul 26, 2011 | Oldsmobile Silhouette Cars & Trucks

2 Answers

When I press the gas the engine turn off


check your throttle position sensor,may have a break in the windings.poss that if your transmission is stuck in overdrive its trying to start in 5th gear if it is automatic.

Dec 21, 2010 | 2000 Chevrolet Tracker

2 Answers

I have a 92 dodge diesel 2wd automatic and it wont shift to OD


the valve body has a vavle stuck in the trans you could take it in and have it fixed at a trans shop or take the pan off the trans figure out which is stuck free it up and maybe put a spring behind it if possible on that model.

Feb 05, 2010 | 1992 Dodge Ram 250

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