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...
Resources for the Repair and Maintenance of your 1990 Dodge Ram Van B350
1990 Dodge Ram Van B350
1990 Dodge Ram Van B350 Problems
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.
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.
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.
1990 Dodge Ram Van B350 Questions and Answers
check ing the voltage, on relay found relay working, reading voltage on one side,but not on the other. replaced relay still have same problem. is it possible that the wire is open ,or grounded. and...
If blower switch had burned and damaged the connector, how do I get a new one. The dealer said they did not have them.
I'm trying to find the crank shaft position sensor and have yet to locate it,the van will fire sometimes but then die.Not sure what it is but process of elimination has led me here.Thanks
My van is hard starting sometimes and stalls sometimes while driving, other times it runs like a top. Is this a fuel filter problem of some sort?
all the time