Engine/Transmission (1994 - 1998) Transmission question

[PToomey]

I am new to Ram diesels. I have a 95 2wd auto and love the truck compared to my old 83 6. 2. Only problem is that sometimes it seems that the truck does not want to shift into 4th gear. When the truck finally gets to about 2300-2500 rpms it will kick into gear. Is this the TPS or the transmission? Also wondering what mild performance upgrades can be made while keeping stock transmission and still get decent MPGs. Thanks

 

[ttbird]

try cleaning temp. probe on transmission. Clean electric connection and use dielectric grease. This is used by trans. to determine if trans. is up to temp. to shift into overdrive. These trans (48rh) don't like mods much. Will have to be real mild if you don't want to upgrade your trans. If it's bad already, just upgrade it and then " bombing can begin " :-laf

 

[DJWyckoff]

welcome

first biuld your sgnature so we know what you got. miles mods stock what ever. second congrulations on dumping the 6. 2L. ttbird has a point see what it does and I suggest you call tony about your trans he has tricks that will alow that trans to live under unbeleivable power/torque #'s cheak out his site I will be purchasing a converter from himin the near future. good luck.



http://dunriteconverters.com/index.html

 

[Joe G.]

One thing to know is that performance mods to our engines will result in better MPG. That is, IF you can keep from stomping on the skinny pedal.



A 47RH trans like you have might shift to OD if you lift when you want it to shift. If it does better after it's warmed up then the temp sensor could be the problem.

 

[Howard Durand]

To test the temperature sender, If cleaning the connections doesn't make any difference, unplug the cable at the sender and put a resistor in the line. Anything between 1000 and 5000 ohms will do. Just bend the leads so they will fit into the plug, tape them in place and take it for a drive. That will fool the PCM into believing that the temperature is high enough and it should shift into OD normally, somewhere between 30 and 55 mph. If that doesn't make any difference, the trouble is elsewhere, maybe in the TPS.

The TPS can be tested too.

At the TPS, conect a voltmeter between the center wire and ground. With ignition on and the throttle at rest, you should read between 0. 8 and 1. 2 volts. As you move the throttle through it's range, the TPS voltage reading should advance smoothly up to around 3 or 4 volts.

If the at rest voltage is much greater than 1. 2 volts, you will find that the shift into OD will occur at a higher speed.

I have read in the forum too, that the drive mechanism for the TPS can wear out and not rotate properly.

 

[PToomey]

Thanks

Thanks for the info. Where is the Transmission temperature probe? Is is the three pronged connection on the drivers side toward the back of transmission? Can anyone recommend a good repair manual? Thanks

 

[Joe G.]

The transmission temp sensor is in the front cooler line close to the transmission.



The ONLY service manual worth getting is the official one from Dodge. You can get one from Geno's Garage.