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1992 Dodge Ram Wagon B250 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1992 Dodge Ram Wagon B250

1992 Dodge Ram Wagon B250 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.

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.

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.

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1992 Dodge Ram Wagon B250 Questions

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 engine turns over but doesn't start; does computer need to be relearned and how?

Can I mix Regular 134a with 134a synthetic ?

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