Question about 1998 Chrysler Town & Country

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Can I replace the transmission solonoid on a 98 Town and Country Van without resetting the computer?

I have the 3.8 liter with 4 speed ******. I replaced the input speed sensor and the vehicle will not shift out of 2nd or go faster than 40 mph without pushing the engine

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  • Master
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It depends. Are there codes in the computer now? Has it bee reset since you replaced the input speed sensor? If the codes are still in there, the transmission may still be in limp-in mode.

Your transmission is computer controlled. Trying to diagnose or repair it without the ability to interface with the computer that controls it about the same as surfing the internet with no monitor. If you push the right buttons and click your mouse just right, you might get to the page you are looking for (not likely, but possible). However, when you do get there, you still won't know it....

Posted on Feb 22, 2012

Testimonial: "I brought the car to an expert who replaced the trans solonoid. Apparently the overdrive sensor was shorting out. Balch's Transmission in Purcellville are trustworthy experts."

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  • Chrysler Master
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Before you replace the solenoid pack you should at least check the output speed sensor. If this sensor fails it will also set a code and put the transmission in limp mode.

You will need a high end scan tool to check for codes in the trans computer, check sensor output data, clear codes, and perform a quick learn (if the solenoid pack is replaced).

It is far more common for input AND output speed sensors to fail than it is for a solenoid pack. As you know the speed sensors are fairly cheap. I'd hate to have you spend the money on a solenoid pack and not have it solve the problem.

If the input speed sensor was the problem the TCM should have seen that the problem was resolved after you started the vehicle, the vehicle should have driven/shifted normally.

I'm also curious if you may have replaced the output speed sensor instead of the input speed sensor. The input speed sensor is under the trens cooler lines and the lines need to be removed in order to replace it. The out put speed sensor is still on the front of the trans but more on the drivers side. Usually when the output speed sensor fails the speedo will also not work.

Also typically when a speed sensor fails the the trans will initially shift normally through all the gears until the vehicle comes to a stop (say at a stop sign or stop light). then the trans will default into second gear.

Pulling codes from the TCM is the best start as DT mentioned above!

I’m happy to assist further over the phone at

Posted on Feb 25, 2012

  • 1 more comment 
  • ken b. May 06, 2013

    my sensors connect has been douched with acud from the battery tray, ive oredered new connection(wiring harness repair from ebay)i had bare wire showing on the out put sensor commect,i wonder if there is a realay or fuse responsible forthe speed sensors that is tripped or burned??700 733 734 are my codes

  • Jeremy W.
    Jeremy W. May 06, 2013

    The sensor is tied directly to the computer. No relay or fuses.

  • ken b. May 06, 2013

    cleared many times



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SOURCE: Replacing bulbs in tail lights in a Town and Country.

  1. Open your tailgate.
  2. Look for two (2) round flat black discs about the size of a dime (but thicker) on the inside of the body (between the red lens and the weather striping).
  3. Using a pair of pliers, pull out each of these two discs.
    • Note they are in tight and may require a fair bit of force to remove.
  4. Make sure the inner part of the disc also comes out. There are two parts to this system, a grommet and a plug:
    1. Push the plug backwards through the grommet.
      • The grommet fits into the actual hole in the body, and is spread by the plug, the pressure holding them in place.
    2. Carefully remove both grommet and plug.
      • The lens assembly will fall away from the vehicle when you pull out the second grommet so be careful.
  5. Note the wiring harness that connects to a plug inside. Beside that plug are two holders for the actual bulbs.
  6. Remove the holder by pressing the sides inwards and pulling. The light socket should come out.

Posted on Oct 21, 2009


Johnny Brown

  • 5763 Answers

SOURCE: Replacing a thermostat in 2005 Town and Country Mini Van

yes you are correct.

Posted on Nov 06, 2009

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1 Answer

1999 jeep Cherokee classic. It will not go into 1st gear. It says it is the input speed sensor. Check gauge light comes on now. I replaced the alternator , input speed sensor and battery. Its over c

It says ? what says? the SCAN TOOL>?

non GRAND, (no engine stated, so fail there 1st)

my guess is you have a DTC and forgot to post that. why do that?

the DTC is covered in the FSM manual, and shows what is failing.

why not read the FSM and do what it says to do?

ill no attempt to read the FSM for you,. and that vague error.

why not log in to and stop guessing. at parts.

there is no reason to gue$$

my guess at he DTC,


or was it the P07xx series, all A/T errors.

P1xxx codes are factory code, got them? need all codes, not just 1 of many. and using a real scan tool not some POS autozoned junk (free)

p0500 is ASE jargon (best ) is VSS sensors.

vehicle speed sensor.

the transmission TCM monitors many inputs, and if they are bad

it can NOT shift, one such sensor is SPEED. MPH or VSS

the tail shaft all all 42RE transmission has a tail rpm sensor

when dead the cars speedometer goes dead, and the TCM

is at a lost to shift to 2nd gear, if speed is 0 all day.

a hopeless deal there.

if the battery voltage is not over 15v, its not overcharging, running.

99 is a nice jeep, id fix mine, ive had many.

the tranny has 2 speed sensors.

the front sensor does not do MPH, its just engine tranny input RPM

there are 3 RPM sensor

Engine, RPM called, CKP

tranny input sensor that tells the TCM true clutch slip at all time

and if the TCC works or not.

the tail shaft is the true speed sensor, vehicle speed, it\'s on tail shaft.

my guess, is the tail sensor is bad and you replaced the front sensor

P-0715 is a bad input sensor

P0720 and up are output sensor errors.

the 500 , is the 3rd sensor, the tail shaft sensor that runs the speedo

1st google hit.

next time post real DTCs

so we can jump on the exact part and the simple tests

the beauty of 3 sensors, is the transmission runs better

shifts better

and the OBD2 diagnostics are dead nuts, accurate.

it can see illegal gear slips (bad clutch packs) in any gear

and tell you. one of the best there.are

if you had new car, with 9speed, good luck keeping that card house going.. really.

Sep 26, 2014 | 1999 Jeep Cherokee

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Switching gears from 1st to 2nd

there is a computer that controls your rpm gauge, your speedo, and your shift. check that and your speed sensor. the sensor is faster and easier.

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03 Intrepid starts great, engine quiet, runs spectacular until I hit approx. 40 mph then the rpms will go up to approx. 3000 but the car wont shift. Any suggestions?

Check for codes, may have a bad speed sensor either input(turbine) or output (vehicle) speed sensor. They are a common problem with the Chrysler transmission.

Oct 20, 2013 | 1994 Dodge Intrepid

1 Answer

Drops out of OD.

Fluid Change has nothing at all to do with a fix
Nothing at all & on a worn trans can cause slipping
In your case I assume a shop gave it a try
The hard shifts tell you the valve body needs cleaning
I would first look at all body data related to the trans,whatever
your truck has TCM Module whatever
I would check all bulletins at a repair shop in their data base
I would have a mechanic ride with you to look at the trans
with the scan tool on it & watch the speed sensor & any
external sensors you may have for correct data
No also check the brake switch
Does it go into Lock-up in most gears (brake sw )

Jul 27, 2013 | 1998 Chevrolet Suburban

1 Answer

Output speed sensor

My wife's last car did that when the input speed sensor conked out. so mabey replacing your bad sensor will help.

Jun 02, 2013 | 2008 Ford Taurus X

1 Answer

My trans was shifting hard and the speedometer would only work at and past 40 mph. I have replaced the trans speed sensor and the shifting seems to be better but my seedometer still will not work untill...

Ok the output speed sensor and the vehicle speed sensor are not the same sensor.The output speed sensor will be on the tailshaft housing of the transmission or to the rear of the transmission case if it is a 45rfe(5 speed auto).The vehicle speed sensor is in the top of rear differential housing.Be sure and douse the sensor with wd40 before you try to remove.Dry oring will cause sensor to stick and break and that can be a headache.Good Luck!

Apr 01, 2011 | 2000 Dodge Durango

1 Answer

What make take off in 2nd and shift to 3 just them 2 gears . 1st and 4 wont shift

Sounds like the transmission control module (TCM) is not responding to vehicle speed sensors input or speed sensors are defective. One maybe but two sensors not likely). Take the vehicle to transmission repair shop and have them scan TCM for codes then take it from there.

Apr 30, 2010 | 1993 Honda Accord

1 Answer

Does speed control senor make transmission not shift into

If the speed sensor Not work on a Automatic Transmission.
The over drive will not work.
The over drive is a SENSOR Located inside of the Transmission.
On vehicles with 3.0 liters.
On vehicles with 3.3 0r 3.8 liters, Is Part of the selenoid pack.
But if you have a 3.3 or 3.8 Liters.
Most cases the transmission will not go up shifting.
it will Stay on 1st or 3r.

If your van is a 3.0 liter , I will recomend replace the speed sensor.
Located At Right side of the Trans. on the firewall side.

if you have 3.3 or 3.8 liters.
I recomend replace the Input and Output shaft Speed sensor.
Located at left side of the Transmission. Behind the Selenoid Pack.

The first step I recomend Is get the Vehicle scaned with a Diagnostic scan tool.
To know exactly what is the problem.
Is there some autoparts That do scan on vehicles with no charge
Just a Complementary service.
Advance autoparts, Autozone autoparts, Pepboy's Autoparts.
And some Napa Autoparts.

OK. I hope this help on your problem.
Thank you for use fixya....

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3 Answers

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The most common cause of Dodge transmissions going into limp-in mode most of the time are the input and output speed sensors. These are relatively inexpensive to replace, and will most likely take care of your problem, provided there are no defect wiring issues, or internal transmission problems. Still, the best way to handle the situation would probably be to go to your nearest dealer. At least armed with information, no one can take advantage of you. The sensors are usually about $60-$80 for both, and the dealers will usually charge about 1-1.5 hrs. labor to change them.

Nov 09, 2008 | 1996 Dodge Caravan

2 Answers

Top speed is 45 mph

this particular year and model has problems with the transmission module. before you go on a whim... make sure your van is shifting gears. when the module goes out it will stay in second gear and not shift to other gears. watch your rpm's to see if it shifts with your speed. if the rpm's dont drop and just continue to advance your transmission is not shifting. the best option if you are not a home mechanic is to take it and have a diagnostic done. there is also the possibility that your input or output sensors are also bad. which also controls when your vehicle shifts and the speed. another thing to look for is if any of the plugs have bare wires and are grounding out. i hope this gives you a place to start..........

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