ya so I have an automatic 04 dodge 2500 and when i slow down my tranny is not down shifting. When I get to about 15km/h it will shift down to 1st gear. It is not making any sounds but you can feel it shift at the last minute, but everything else shifts fine. It gets annoying driving in the city.

 

Sounds like it is a governor pressure solenoid or transducer that may be causing your problem. Pull the pan and filter and you will see them.

 

is this going to be an expensive fix if it is the solenoid or transducer?

 

It shouldn't be to bad. I don't remember exactly the cost of the parts. Someone else on here may.

Check for codes. Turn the key on and off to the run position only 3 times and the third time leave it on, look at the OD display. It should spit out any codes you may have. Oh, and have the doors closed. Post the code and someone can help.

 

ok cool, thanks for the help

 

ok 2 codes appeared...
P 1757
P 0483

 

Did a search and found this. Most helpful.

SYMPTOM
P0483-FAN SPEED

WHEN MONITORED
While the engine is running.

SET CONDITION
The actual fan speed is less than 75 rpm or more than 4000 rpm .

POSSIBLE CAUSES
Other DTC'S
(Y5) signal circuit short to 5-volt supply (Y3) circuit
(Y5) signal circuit open from ECM to fan clutch assembly
(Y3) supply CKT open from ECM harness connector to fan clutch harness connector
Intermittent condition
(Y5) signal circuit shorted to return in the harness
(Y5) signal circuit shorted to voltage
(Y5) signal circuit in ECM shorted to ground inside ECM
(Y5) signal circuit shorted to voltage in the ECM
(Y3) 5-volt supply circuit in ECM
SYMPTOM
P1757-GOV PRESS ABOVE 3 PSI IN GEAR WITH 0 MPH

WHEN MONITORED
While the engine is running and the gear selector is in the Drive Position.

SET CONDITION
This code will set if the Governor Pressure is greater than 41.4 kPa (6 PSI) for 5 seconds while the gear selector is in the Drive position with the road speed equal to zero - six times during a drive cycle. The transmission oil temperature must be between 23-88 C (78-190 F) .

POSSIBLE CAUSES
Other transmission DTC's present
5-volt supply circuit open
5-volt supply circuit open inside the transmission
Oil burnt or oil pan has excessive debris
Governor pressure sensor
Valve body
ECM
Engine control module -5 volt supply
Intermittent wiring and connectors

 

Looks like it is the governor pressure sensor for the P1757. Your loaded for bear. The search function on here is powerful.

 

thanks spooler i have been lookin at the pages on here and it looks easy enough to fix myself.

 

sorry i guess i should tell everyone how i fixed the problem.........I bought the govenor solenoid and sensor totalling about 250$ from the dealer and took me about half an hour to fix, now it runs like new and am very happy with it