The AC/heater (HVAC) system may unexpectedly switch to the defrost mode when accelerating. This system is operated by engine vacuum and should be inspected for any vacuum leaks if this problem develops. There is also a revised vacuum check valve available to address this concern.
Resources for the Repair and Maintenance of your Dodge Ram Wagon B250
Dodge Ram Wagon B250 Models:
Dodge Ram Wagon B250 Problems
Oil leaks from valve cover, intake manifold, and timing cover gaskets
Engine --
Verified
On the 3.9L V6, 5.2L V8 and 5.9L V8 the Oil leaks commonly from the valve cover gaskets, intake manifold gaskets (front and rear), timing cover gaskets, distributor O-ring, and the rear main seal area. Using fluorescent engine oil dye can be helpful in determining the source(s) of the oil leak.
High Blower Only Due to Failed Blower Motor Resistor
Heating & Air Conditioning --
Verified
The HVAC blower may operate on high speed only. This is commonly caused by a failed blower motor resistor. Chrysler has released a revised part to address this problem.
Erratic Blower Motor Operation Due to Overheated Switch
Heating & Air Conditioning --
Verified
The blower motor may operate erratically and the blower switch operation has a sticky or mushy feeling, the detents almost non existent. Our technicians tell us that the blower switch should be removed and inspected for overheating. This is common if the blower motor is frequently operated on high speed as the current flow through the switch tends to melt internal the components. Also carefully inspect all of the switch conne...
Carbon buildup at top of piston may cause noise
Engine --
Verified
One the 3.9L V6 and 5.9L V8 the carbon buildup on the top of the piston is common. As the buildup increases with mileage and over time, symptoms may vary from light ticking, to ticking/hammering, to hammering/knocking noises. Fuel injector cleaner often solves the problem.
Dodge Ram Wagon B250 Questions and Answers
stallison9, 1990 Dodge Ram Wagon B250, V8, Brooklyn, NY
Recently, my alternator died. I'm going to replace it, but I can't get the belt that surrounds the alternator loosened. I got the main bolts and nuts off the alternator and the electric...
jonlocke, 1994 Dodge Ram Wagon B250, V8, San Jose, CA
my van has problems shifting fom park to reverse, and makes a strange rattling noise at higher rpms. what could this be?
STORM420, 1991 Dodge Ram Wagon B250, V6, Cleveland, OH
MY EMISSION TEST FAILED DO TO THE(NOx) LEVEL TO HIGH FOR OHIO STANDERDS
smike, 1992 Dodge Ram Wagon B250, Norfolk, VA
Can I mix Regular 134a with 134a synthetic ?
hoody, 1992 Dodge Ram Wagon B250, Oroville, WA
History; engine light "on", alternator was not charging, replaced. Still not charging, battery checked out o.k.; voltage regulator inside computer possibly b.o. Replaced computer, now eng...
Dodge Ram Wagon B250 Model Years
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