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What causes the overdrive solenoid to stop workimg in a 727 transmission?

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The speed sensor on tailshaft

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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 !


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.


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

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What causes aChevrolet z71 to not shift into overdrive and take off in 2nd gear after I change my transmission out 5.3 liter motor with a 4l60e transmission 4-wheel Drive

If you are lucky, bad shift solenoid (common failed part) may cause it to start in second. Other problem of no overdrive (ie: no torque converter lockup) could be as simple as misadjusted brake pedal switch or TCC solenoid. Where did you get this apparently bad transmission?

Dec 10, 2014 | Chevrolet Cars & Trucks

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92 olds ciera. transmission is stuck in overdrive and will not shift down when slowing down and sometimes dies when stopping. What is wrong with it?

torque converter clutch solenoid is not releaseing lock up. caused this to happecn. does this vehicle transmission have a vacuum modulator on the side of transmission case? below front side left center of trans case.

Apr 14, 2013 | Cars & Trucks

1 Answer

The jeep grand cherolee lared 4WD V8 won't go into 4th gear

Possible you have a simple problem such as a bad solenoid and or maybe some kind of engine coolant temp sensor problem.The v-8 engine in this year did not have true computer controls, it did have a solenoid for lock-up torque converter and a solenoid for overdrive.It was basically just and old tech hydraulic transmission with two solenoids.Most likely unless the transmission has been rebuilt properly before you are at the beginning of the end.No overdrive in this year model usually means the clutch in the torque converter has shredded and stopped up the cooler and melted the overdrive unit.I would have someone to pull diagnostic codes and see if there is anything stored.You may want to remove the transmission pan and inspect for debris in filter.Good luck!

Mar 19, 2011 | 1994 Jeep Grand Cherokee

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When I come to a stop my 2002 ford ranger does not down shift. Its like its stuck in overdrive and it cuts off,stops running,or chokes off. When it first started doing this I could take it out of overdrive...

No, the problem is your torque converter clutch is getting stuck on. You can sometimes get it to stop this by flushing the system, but to fix it right usually requires a rebuild. On an older vehicle, I usually recommend just disconnecting the clutch solenoid to prevent it from engaging. This will result is slightly less fuel mileage, but the truck will no longer stall when stopping. This approach can also be used to put off repairs to a more convenient time. To execute this option, find the wiring harness to the transmission and cut the violet wire with a yellow stripe. Use electrical tape on the ends of the wire to prevent accidental operation. This will cause your malfunctions indicator (engine light) to illuminate, and the computer will store a trouble code on the TCC circuit, but there is no harm in leaving it this way. If the transmission is later repaired, the wire would be soldered back and the trouble code cleared. Please let me know if you have more questions, and thanks for using FixYa.


Jan 17, 2011 | Ford Ranger Cars & Trucks

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No over drive

If you have a manual transmission model, check the wiring to the overdrive solenoid (M46,M47 transmission with type M overdrive) and check all fuses. This solenoid simply opens a check valve that allows the overdrive to function (DO NOT reverse the vehicle with the overdrive engaged or damage will result to the unit itself).
Automatic transmission models also have an overdrive override solenoid, bottom left side. If it is stuck in the override mode, check for shorted wiring to the solenoid. Also check the switch which can bind closed. If you can put a voltmeter on the wiring to the solenoid itself, check for voltage; if you have voltage and the switch is known good, the wiring is faulty. No voltage means the solenoid plunger is stuck down. Remove the solenoid and repair or replace it. In most cases replacement of a well-used item is better than repair.
All models: Always verify the condition of the wiring and connectors before condemning the unit. In most cases a voltmeter will rule out what the solenoid isn't doing. If you have voltage at the terminals on manual transmission models but no overdrive function, the solenoid has either seized or the coil has burned out. On automatic transmission models voltage at the terminals means the opposite: the solenoid will override overdrive and keep it in the third gear. No voltage for manual means no overdrive; no voltage on the terminals for automatic models means overdrive engages normally; if this is the case, replace the solenoid.
If, after all this checks out, on automatic models, this means that the transmission valve body has plugged up with deposits. For manual models, it means roughly the same (the overdrive is essentially a one-gear automatic transmission) and it also indicates that something is amiss with the hydraulic circuits, in both cases. Low line pressure can also cause this to happen in both types which means either the fluid is bad, the valve body is dirty, the screen is clogged or the main oil pump in the transmission (automatic models) is leaking. Always perform a thorough check before condemning either transmission type - they are conventional in design and very sturdy.
On AW-7x transmissions, no brake bands are used, therefore only clutch packs are employed. On the M46 and M47 manual models, the overdrive is a bolt on unit (type J or type M, depending on year). On the ZF series of automatic transmissions, the overdrive is integral to the transmission, being a true fourth gear. All models use a solenoid to control the upper gear range.
Note also that if you have the manual transmission, it may prove risky to rebuild it if you can beat the synchro by a quick change. Rebuilds offer up different wear surfaces to the case and can make a noisy transmission noisier.
Automatic models utilize clutch packs front to back. Band brakes were eliminated entirely, and when these start to fail the most noticeable problem is sloppy, hard shifting even after a fluid and screen job. The clutch wear surfaces decrease in friction holding and become thin. This implies loose clutches and this implies poor shift quality.
Always change the fluid completely (including the oil cooler, note it is thermostatically controlled) and clean the magnets of all debris. Introduce new oil into the system and test again.

Oct 22, 2010 | 1990 Volvo 740

2 Answers

Transmission will not shift into overdrive sometimes, mostly when cold. After engine is warm, it will shift. It started doing this after i cahneged the transmission fluid and filter to Royal Purple

Overdrive is electrically controlled by the pcm. When it's cold you need to check to see if the pcm is grounding the overdrive solenoid. If it is the solenoid might be bad or if the pcm is not grounding it then you need to check items that would cause the pcm to lock out overdrive. Coolant temp, TPS, Vehicle speed sensor, ECT. You will have to have it scanned to do this.

Apr 01, 2010 | 1992 Dodge Dakota

2 Answers

1981 Toyota Celica GT LiftBack No Overdrive

Toyota's automatic overdrive is always electronically switchable; it could be the OD solenoid (in the transmission).

Mar 23, 2009 | 1983 Toyota Celica

2 Answers

2003 suburban transmission **** when it stops

If your transmission has a vaccuum module on the side, check that. it will cause similar problem.

Mar 17, 2009 | 2003 Chevrolet Suburban 1500

3 Answers

1995 Windstar transmission problem

having same problem with tranny but the overdrive light keeps blinking any ideas?

Feb 01, 2009 | 1995 Ford Windstar

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