Question about 2001 Jeep Grand Cherokee

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Grandcheroke wont go in to overdrive on a very rare ocassion it will also its having problems determing which gear to select say if i slow right dow to turn it will go into 2nd then 1st back into 2nd

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Sounds like the actuator valve is bad. these things get dirt in the diaphrm and cant open and close properly. if you can depress the diaphram by hand..then its good,and the vacuum line leading to it is cracked and needs replaced.

Posted on Apr 28, 2010

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My 2006 chevy cobalt wont run in drive it dies but will run good in reverse


On some old Buicks and Oldsmobiles the overdrive would stick on. A bandaid cure for them was to unplug the cable under the hood, but you no longer had overdrive. I heard that changing the transmission fluid would clear that up. There's no overdrive in Reverse.. placing the car in 1st or 2nd gear could bypass o/d also if they don't use the same gear set. Once up-to-speed, place the car in Drive. This only works if the reason the car dies is it can't accelerate in that high a gear at such a slow speed.

Oct 12, 2015 | 2006 Chevrolet Chevrolet Cobalt LS

2 Answers

2000 GMC Jimmy won't shift to overdrive. New seal, screen, & sensor that shows what gear it is in and fluid changed. Worked for 3-4 weeks now "Service Engine Soon" light on and having same symptoms.


The Internet, though, has a large number of web sites where
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Aug 30, 2015 | GMC Cars & Trucks

1 Answer

Is it ok to start off in 2nd gear and manually shift up to 3rd and then overdrive?


You can put the shifter in 2, 3, or overdrive. It will still start in first and shift up to whatever gear you have selected. Try it, you wont damage anythingl

Oct 22, 2012 | 1996 GMC Yukon

1 Answer

Wont go in overdrive after it rained what is it


have the same problem. went kinda slow through a puddle cause someone in front of me was going slow. now wont shift into 4th and my check engine light came on. any ideas? is it the serpentine belt like the answer says above?

Jun 19, 2012 | 1997 Dodge Ram 1500 Club Cab

1 Answer

1994 shift only when overdrive is off.


first thing to check is transmission oil level and quality. If that is fine than your looking at either a valve body problem (valve body is what controls the selection of gears) or possibly a problem with the bands on the planetary gear set, they can be tightened in certain models. However i dont think it is the bands.
Does the overdrive only engage 4th gear? or does it feel like the gear ratios are different between overdrive and normal before the problem happened? some overdrive buttons engage final gear and some do as much as change gear ratios like in a cvt (contantly variable transmission) and some just change the timing in the gear changes to provide more rpm/power.
My best guess is that the valve controlling the overdrive in the valve body has failed and therefor you dont get a response from the transmission (i.e no gear shifting when overdrive is selected)

Feb 29, 2012 | 1994 Lincoln Town Car

1 Answer

I have an 80 series landcruiser with A442F transmission, built 1993. It will not select 1st gear or overdrive. It takes off in 2nd and shifts to 3rd normally, 1st gear can be selected manually and changes...


It seems like your "2nd start" button is turned on. The 80 series LC has a button next to the shifter which allows it to start in 2nd gear. If the button is not engaged then there could be a problem with the circuit, but that is not common

Nov 01, 2010 | 1994 Toyota Land Cruiser

1 Answer

My 96 jimmy studders and does not want to change to the 4th gear when in drive,when in overdrive it wont change to 5th gear(overdrive)will the tps sensor do that


Make sure the engine is running right, sometimes they wont shift if the engine is missing or losing vacuum. Sounds like the computer system is sensing there is not enough torque to shift into the higher gears so it is preventing it. This could be caused by your engine not running right under load, bad gas, bad plugs or something that is causing your engine to miss under load

Mar 01, 2010 | 1996 GMC Jimmy

1 Answer

What have the overdrive light blanking. 2000 Ford


The overdrive light blinking indicates a problem. Take it to a shop for servicing.

Sep 23, 2009 | 2001 Ford Windstar

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