Question about 2001 Hyundai Accent

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Transmission overdrive not working

No overdrive with the switch on everthing else works normally

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  • Anonymous Mar 25, 2009

    my overdrive button does not work. it is in off mode and will not turn back on. this means i can not reach any higher speeds. anyone have any idea what is the matter?

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When this happens to mine, i will stop then put the car in idle. move the shifter to reverse then to first, then second gear, then into park. and then repeat. This fixes mine. It happeny s about every five thousand miles or so.

Posted on Feb 01, 2009

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Posted on Jan 02, 2017

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1994. Why is there no power on fuse that controls cluster lights, a/c and heater controls, cigar lighter light and ash receiver light, radio lamps and overdrive?


Looks as if it is a 4amp fuse and power comes from the headlight switch. Do park lights work? Looks as if 20amp fuse to headlight switch controls park lights and possibly power supply through switch to 4amp fuse. This diagram is for a 6cyl and should be the same as an 8cyl. Hope it helps

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Sep 13, 2015 | Dodge Dakota Cars & Trucks

1 Answer

Can you turn on and off the overdrive on a 98 ram 1500


I have never known an overdrive that cannot be switched on or off at will or engaged or disengaged.

There are two definitions of overdrive and in the philosophy of some people the fifth gear is an overdrive.
The conventional manual gearbox, because the first motion shaft is locked to the third motion shaft in the top gear ratio, any supplemental ratio that has a ratio higher than 1:1 is considered an overdrive ratio.

The more traditional definition of an overdrive is a supplementary gearbox that can be incorporated into a normal manual gearbox to provide a single overdrive ratio for the purpose of quieter and more economical cruising.
The early overdrive was cable operated by a large chrome-plated dashboard-mounted handle. Later overdrives were hydraulic units that could be switched in or out by electricity, often by the means of a steering column-mounted switch or by a tiny switch incorporated into the gearknob.

A typical installation included an inhibitor switch mounted on the gearbox which prevented overdrive operation in the lower ratios when the benefits would be dubious.
Sometimes a lower than standard final drive ratio would be used and the overdrive ratios which typically could be selected whenever third or fourth gear was selected could be used together to produce something like a six speed close ratio gearbox which was hitherto unheard of when some of the rest of the world was still using "three on the tree" type three-speed gearboxes.

Most manufacturers had dispensed with overdrives by the end of the 1970's due to the weight and added expense, in favour of the now common five-speed gearbox, though Nissan incorporated an overdrive ratio into their automatic transmissions to compensate for torque converter slip when fuel costs began to rise disproportionately.

If you have an overdrive unit fitted to your car that doesn't work, I advise starting the diagnostic process by checking through the electric circuitry, wiring, switches and solenoid.

Feb 12, 2015 | Cars & Trucks

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

How does an automatic transmission overdrive solenoid and part throttle unlock work


When you depress the throttle, the throttle sensor electronically tells the computer to take the transmission out of overdrive and when the throttle is released overdrive comes back on. When you depress the brake pedal, it also will go out of overdrive by a switch connected to the brake pedal with the brake light switch. Let off the brake pedal and goes back into overdrive once at speed.

Oct 28, 2014 | Cars & Trucks

1 Answer

Tachometer and overdrive shifting


could be a faulty trailoring switch

Apr 08, 2014 | 2006 Dodge Ram

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

I have a 1997 Kia Sportage (#KNAJA5278VA787759). The automatic transmission used to not shift into overdrive at 60 km/hr, but only after the engine was warm--after about 5 km of driving. The problem...


I had a simular problem.
Ended up changing the themastat and the gears changed into overdrive when the temp. got to normal running.
Be carefull that you get right thermastat though. You want one that reaches the normal working Temp as soon as possable.
Hope this helps.

Feb 18, 2011 | 1997 Kia Sportage

1 Answer

94 gmc 4x4 1500 overdrive sometimes works


Check for a transmission speed sensor fault (OBDII scan). Loss of speed sensor signal will result in no torque converter lock up, and no overdrive. Also transmission filter should have been changed at 80,000 miles. Age of your vehicle(1994) warrants the filter service. Transfer case (4WD) needs to be serviced as well.

Jun 04, 2017 | 1994 GMC Sierra

2 Answers

1997 Toyota Caldina GT-T 3S-GTE


Hi there,
As you say the tacho/speedo come "back up to normal" after the incident, I assume that they either stop working or become erratic while the dash lights are misbehaving.
If so, this sounds like a dash wiring electrical problem.
The O/D OFF light is lit by the switch on the shifter (switch also inputs to the ECU). The ENGINE light is driven also from the ECU but the SLIP light is driven from the ABS/VSC computer, although these two computers do communicate.
Best plan of attack would be interrogate the ECU for error codes or ask a Toyota dealer to do so. At least you'll have some clue to any problems that the ECU's may have picked up.
Contact me about checking for ECU error codes if you want to attempt it yourself. Although the Caldina has an OBDC2 connector, as I understand it it's not 100% compliant, so you'll need a Toyota compatible reader. Fortunately teh codes are also output via the CHECK ENGINE light.
If there's no problems there, I'd be pulling the instrument cluster and checking for wiring problems. I'm not sure where in the world you are but most ex- JDM vehicles could have modified with timers, speed-cut or fuel-cut devices that either have been poorly installed or are playing up and causing electrical problems.

Aug 08, 2009 | 1997 Toyota Camry

1 Answer

How does the overdrive work?


overdrive is a switch on the automatic shifter (normally)which selects the overdrive gear ,changes gear ratio so yuo will be doing less rpm at high speed,leave it off at low speed

Jul 02, 2009 | 1996 Toyota Camry

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