1990 Dodge Ram Van B350 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1990 Dodge Ram Van B350

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 connector terminals for discoloration due to overheating and replace as required. A poor electrical contact at the connector will also cause the switch to overheat.

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.

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.

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The shocks i bought seem to be to long to fit, ive raised the vehicle by the frame until the wheel is off the ground but they are still to long ,the parts store insists they are the right ones,is ther some kind of trick to instaiiing them/or do i need to get a certian compressed lenght size shock?

on a 1986 Dodge Ram Van B350 turn signals DO NOT work, changed the bulbs, is there a fuse inline somewhere?

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