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 1994 Dodge Ram Van B150
1994 Dodge Ram Van B150
1994 Dodge Ram Van B150 Problems
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...
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.
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.
Excess cooling fan noise may be caused buy a faulty cooling fan and fan clutch.
1994 Dodge Ram Van B150 Questions and Answers
where can I get a replacement bed for a 94 dodge ram cargo van 1500 with a 318 engine?
My 1994 Dodge B150 van won't start in cold weather until the ignition is left in on for 30-40 minutes, then a relay clicks for a while and then it will start. Any ideas, anyone
Going over 50-55,mph vehicle starts to sputter. Also when I have less than 1/4 tank of gas. 2 Mechanics said there is no fuel filter on this model and diagnostics does not pinpoint probler.
where is the Blower Motor on a 1994 doge van b150 with a 3.9