Question about 2002 Chevrolet Monte Carlo

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The Trans. don't shift up, I unplug the TPS and it shifts. Changed the TPS and it don't shift. Also changed the Speed sensor on trans.still don't shift

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  • Anonymous Mar 12, 2014

    Need to change the trans shift sensor

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  • Chevrolet Master
  • 5,763 Answers

The first thing to do is have the computer scanned for codes, these codes will tell you what system is not operating correctly.

Posted on Jul 13, 2010

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2 Answers

Reving up when in gear driving


check your trans fluid, if its been a while flush it and change the filter if its reving and your speed doesnt change (slipping) if your speed changes check the TPS and speed sensors on the trans as well when you change fluid.

Jun 27, 2014 | 2004 Jeep Grand Cherokee

1 Answer

1994 chev 4x44l60 trans,np241c tcase,speedo stopped working trans immedeatly stopped shifting past 2 gear


FIX SPEEDO MAY NEED A SPEED SENSOR AND IT WILL NOT SHIFT IF IT DOES NOT SEE THE OUT PUT SPEED

Feb 21, 2013 | Cars & Trucks

1 Answer

96 mazda 626 not shifting into 4th gear


You basically need the trans rebuilt. The only way the speed sensor could affect any of the shifting problems is if it broke off into the trans. somehow. You could try checking the trans fluid first, or having it changed.

Jul 16, 2012 | 1996 Mazda 626

1 Answer

I have a 2000 Ford Expedition (Eddie Bauer), 5.4 with 65,000 miles. It has recently started having a hard shift from 1st to 2nd gear in a slow acceleration. I have serviced the trans filter and fluids,...


You should change trans & power steering fluids
every 30,000 miles on all vehicles,if you don't from
when the vehicle was new,you will have problems

Changing the trans fluid only restores the heat removal
properties,it does not fix a single thing, at all

The shift stratagy is determined by several things

Check that the TPS Sensor is working without worn
spots inside it.

No adjustments to make

You could have the sensors checked with a scanner
while driving it.

You have a delayed 1-2 shift

The are servos that apply bands etc,I think
in the end you will be pulling the trans to rebuild
it,as you will be chasing several possibilities, that I
believe will be hardened internal seals from time,
wear & mostly heat

You didn't mention mileage or other past issues
with the trans etc or if your the second owner
etc

They don't normally go 11 years

Jun 23, 2011 | 2000 Ford Expedition

1 Answer

91 cherokee shifts fine at fist but after a minute or so it wont shift out of first gear. changed the output speed sensor but no change


Sounds like a bad out speed sensor.Are you sure you replaced the correct sensor?This trans(AW340)Has an output speed sensor and a vehicle speed sensor.The output speed sensor is located on the side of tail housing just next to where it bolts to transmission case.The vehicle speed sensor will be about midway of the tail housing or on the transfer case tail housing on the 4x4 models.It may be a good idea to have a tranny shop you trust run a diagnostic and see if you are getting output sensor signal to TCM( transmission control module behind glove box)and take a look at TPS (throttle position sensor)signal when it is hot to make sure you replace the correct part.I have seen bad TPS sensors on these jeep not affect engine drivability because the sensor is really two(one for trans and one for engine)thus the two plugs on the TPS sensor for the automatic Cherokee.Good Luck and let me know if I can help.

Mar 21, 2011 | 1991 Jeep Cherokee Limited

1 Answer

My transmission takes a while to shift around 40 mph. how can i fix it?


is this problem only when engine cold or happens also or only when hot?most simply ,shifts are determined by TPS(throttle position sensor)on engine throttle body,speed sensor(s)on transmission,and internal valve body.Trans should be serviced every 40,000km,we find that running trans on a flush machine often restores shifts and part throttle kickdowns if fault is not mechanical but caused by contaminated fluid as it gets most of the dirty fluid out of all the areas that a drain and filter change wont do.It is usually is best to get trouble codes checked for engine and trans.Which shift is it delayed in,2-3,3-4,does coming off the throttle help it change?is it upshift or downshift that is problem.This info will help in pin pointing problem better.hope this helps.

Feb 11, 2011 | 1999 Ford Explorer

2 Answers

If my trans was unplugged will the speedometer quit working and trans quit shifting? 04 chevy 5.3 z71 vortech


YEP YOU NEED VSS SENSOR HOOKED UP SO TRANSMISSION CAN SHIFT RIGHT.AND SHIFT TO OVER DRIVE AT SET SPEED. YES YOU NEED TO SEE YOUR SPEED TO KEEP FROM GETTING A SPEED TICKET.DONT UNPLUG IT.

Feb 02, 2011 | 2004 Chevrolet Silverado 1500 Crew Cab

2 Answers

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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