Jeep Garage  - Jeep Forum

Jeep Garage - Jeep Forum (http://www.jeepgarage.org/forums.php)
-   Engine Performance/Intake/Exhaust (http://www.jeepgarage.org/f196/)
-   -   Might have a problem here (http://www.jeepgarage.org/f196/might-have-a-problem-here-17238.html)

scrivenerc 01-09-2011 04:35 PM

Might have a problem here
 
I have a 2000 WJ with 125,000. The other morning when i left for work the tranny had a real hard time getting in to first. When i stopped at a stoplight the rpms dropped and it stalled. Later that day when I put it in reverse it stalled again, and seems to have an issue downshifting to first when Im at a stop. Any ideas would be very helpful. Its about an average of 30 degrees here in NC right now if that helps.

Frango100 01-09-2011 08:14 PM

Re: Might have a problem here
 
Donīt know which tranny/engine your jeep has, but many times shifting problems are caused by input/output speed sensors. But ofcourse first some basic things should be done. Is the fluid level ok and has the fluid been changed at normal service schedule? Did the "check engine" light lit up? So if you could answer these questions first, especially regarding which tranny/engine combo, we can maybe better help you out.

Chaoul1 01-09-2011 08:52 PM

Re: Might have a problem here
 
Torque Converter?

scrivenerc 01-10-2011 12:52 PM

Re: Might have a problem here
 
i have 4.7L, and no the check engine light did not come on. I bought the jeep used a few months ago and im not sure of when the last time the fluid was changed.

ithinkfit914 01-11-2011 07:58 PM

Re: Might have a problem here
 
i had that problem once before. I had a hard time getting out of first when the gas light came on. I just switched out the output speed sensor and haven't had any problems since. ::knock knock:: (me knocking on wood haha)

Frango100 01-12-2011 10:23 AM

Re: Might have a problem here
 
When you donīt know the maintenance history of the car, you can better change all oils, fluids and liquids: engine oil + filter, transmission fluid + filters, diff fluid, T-case fluid, engine cooling liquid and brake fluid. It is ofcourse some work and you have to spend some money, but if you want to keep the car for some time, you can drive around without any problems and during the fluid change you can see the general condition of the several components. Any glinstering inside oil or fluid indicates wear, eventhough i think its quite normal to find some glinsters in the diff fluid.
Also engine air filter and plugs should be checked for condition or just changed, to start from 0.
But regarding your transmission, your problem is most probably caused by one of the transmission speed sensors, as mentioned before. Quite cheap and easy to change.

ithinkfit914 01-12-2011 12:45 PM

Re: Might have a problem here
 
Frango's right. Changing all the fluids and stuff is the first thing you should do. Other than that. THe output speed sensor cost me about 40$ and then I just did it myself

FredoinSF 01-12-2011 03:09 PM

Re: Might have a problem here
 
Quote:

Originally Posted by Frango100 (Post 332970)
When you donīt know the maintenance history of the car, you can better change all oils, fluids and liquids: engine oil + filter, transmission fluid + filters, diff fluid, T-case fluid, engine cooling liquid and brake fluid.
Also engine air filter and plugs should be checked for condition or just changed, to start from 0.

I totally agree with Frango on this. At that age and mileage, the best option is to buy a car from the owner who has complete history and receipts. Short of that, assume nothing has ever been done. Whenever I buy a car with more than 50K miles, I just assume it will some amount of remedial maintenance and I factor it into the budget.

When I bought my 02 WJ with 87k, I did all of the above, plus the serpentine belt, and the radiator hoses. I also ended up changing tires because closer inspection revealed gouges on the inner sidewall and I did the shocks for good measure.

I can't give specifics on your trans problem, but sometimes fresh fluid and filters work wonders for recalcitrant transmissions. I have had cars go well over 200,000 miles with RedLine synthetic fluids and use their stuff in all my cars where possible. They make an automatic trans fluid for Chrysler vehicles.
http://www.redlineoil.com/product.aspx?pid=53&pcid=9

I did not have any transmission problems, but this stuff has been in the Jeep for almost 5,000 miles now and shifting is smooth. They also have a gear oil that meets the Jeep requirements, but I can't recall the recommended viscosity off the top of my head.

scrivenerc 01-14-2011 07:46 PM

Re: Might have a problem here
 
Quote:

Originally Posted by ithinkfit914 (Post 333052)
Frango's right. Changing all the fluids and stuff is the first thing you should do. Other than that. THe output speed sensor cost me about 40$ and then I just did it myself

Where did you order the sensor from, and do you have a how to for the change out.

Frango100 01-15-2011 09:48 AM

Re: Might have a problem here
 
I bought mine online via www.justforjeeps.com. The change itself is very easy and you don't have to drain any fluid. They are both mounted on the left side of the transmission, one forward and one aft and are mounted with one bolt only.

cheapjeep 01-15-2011 10:54 AM

Re: Might have a problem here
 
Hey guys if one of the output speed sensors are bad it should be throwing a code.i know our '99 did. Hate to see ya buy a sensor for nothing.
  • P0720 Output Speed Sensor Circuit Malfunction
  • P0721 Output Speed Sensor Range/Performance
  • P0722 Output Speed Sensor Circuit Low Input
  • P0723 Output Speed Sensor Intermittent

ithinkfit914 01-15-2011 02:14 PM

Re: Might have a problem here
 
yeah mine threw the first one so thats why I changed it out


All times are GMT -5. The time now is 05:25 PM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community