Question about 2001 Mitsubishi Diamante

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What are the factors that would prevent trans from shifting?

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1. Low Fuid, check.
2. Loose wire connections on transmission.
3. Shift Solenoid inside the transmission.
4. Clutch plates inside transmission.
5. Bad valve body inside transmission.
6. Transmission computer

Would probably need to send to a shop to diagnose, as they have the proper scan tools. You should be able to check fluid, and connections.

Posted on Oct 10, 2010

  • francisco hernandez Jun 07, 2013

    Do you know if the solenoids are after you take the first cap, or you have to take the tranny out to change the solenoid?


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Trans change into high gear after about 40mph

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and if in OD. or not.

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you really did not provide much detail info...
mileage of vehicle and conditions driven are important factors.
however... as a rule the first thing I would do in this case is take it to a facility that you trust and have the tranny fluid and filter changed. auto trans' are hydraulic system that require the fluid to maintain certain pressures to work properly. even with normal driving this should be done as a regular maintenance item. check your owners manual for the recommended cycle.

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2003 Chevrolet Cavalier automatic won't shift to park and reverse its stuck on neutral and drive

I think it is linked to the Starter Interlock system and probably a switch on the Brake pedal lever under the dash.

There is suppose to be a safety system(check brake lights) which prevents starting the car without a foot on the Brake or without the car in Park.

Some makers may allow starting in Neutral like the old days; but the intention of the system was to prevent runaway cars from moving when the Gearshift lied about being in Park.

I know that the system had to be adjusted "referred to as timed" so that the shift linkage, Brake pedal switch and sometimes Ignition switch had to be in the right place for everything to work.

Reading your problem it is evident that part of the system was crippled for some time, and finally fell apart on you.

Possibly your shifter indicates D when it is in another gear and that the linkage is binding and preventing the correct selection of gears.

You could securely jack a rear wheel off the ground and disconnect the trans linkage. Have an assistant operate the gearshift and see if it makes sense and if it is binding. If the shifter seems okay, your only choice is to try to operate the shift lever sticking out of the trans. Engine OFF. To see if valve body in trans is rough.

Alternative is to tow it to a Repair shop for diagnosis. Notice I did not say Trans shop. You don't know if you need a Trans shop yet. So taking it somewhere where they do not install Transmissions will go further in getting only what is necessary fixed.

Please rate my info, I hope it helps.

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Changed transmission computer still have code 605 wont shift out of 2nd gear

did you have pinion factor and quick learn performed on the trans module after replacement? if not then the trans won't shift correctly. also is the check engine light on with any engine codes in memory? the engine module may the trans stuck in limp-in mode(2nd gear).

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My car will not reverse but it will go forward

Sounds like a typical reverse band problem...cover the easy things first however... is the fluid full??? check it engine hot in the fluid burnt??? bad smell not red like out of the can... if its low or if its burnt make sure you purchase the proper fluid for your particular vehicle some trans fliuds dont mix...a trans service may fix it as the trans has a filter that (may) be clogged but usually this causes a non shift in drive as well as reverse...if all else fails sounds like a trans repair/replacement is in the horizons.Cost factors: Trans fluids $3.00 qt.: trans service $30.00-$100.00: Trans repair/replacement $600.00-$1500.00.

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1 Answer

Need diagram of trans to see if it has a speed shift sensor something is making it not want to shift sometimes

it has more than one speed sensor.
there are many factors that control the shift.
start with the simple stuff
1. how is the fuild level?
2. what condition is the fluid in?
3. is the shifter linkage working correctly?
4. are all the sensors pluged in?
5. is the cooling system working correctly?
electronic failures may turn the check engine light on.

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2 Answers

1997 ford contour wont shift

a speed sensor will prevent the trans from shifting if the odemeter isn't working because if the speed sensor is bad and the odemeter and speedometer isn't working the trans has no ideal what gear to be in

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1 Answer

Gear shifting

Hello, The proper name for this A/T control module. Be careful because there are many other factors that control the transmission shifting like shift solenoid, throttle valve solenoid, trans speed sensor, trans temp switch etc. etc.
I hope this helps.
CYA, Gator241

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1994 Dodge Spirit Automatic Transaxle

Yes the computer uses TPS (throttle position sensor) and VSS (vehicle speed sensor) sensors information as well as fluid temp and other factors to determine shift points based on the info stored in the PROM (memory) IC chip, if it is not shifting then you either have a poor connection at the trans case electrical connector or a sticking shift solenoid inside the trans, I would pull the trans connector off and make sure it is clean and properly installed, look for a broken connector retainer as well, this is very common and can cause a loss of signal from the PCM (power train control module) module to the transmission shift solenoids. Most likely the 3rd gear shift solenoid is sticking off from sitting so long, had this happen on my truck, cleared itself.

Sep 18, 2008 | 1994 Dodge Spirit

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