Question about 1990 Dodge Dynasty
Could you clarify your engine size?
4 Cylinders K 2.5L TBI SOHC 6 Cylinders 3 3.0L FI (found in 36% of 1990 Dodge Dynasty) 6 Cylinders R 3.3L FI (found in 64% of 1990 Dodge Dynasty)
If you have the 3.3L the voltage regulators are located in the Powertrain Control Module (PCM) or Single Board Engine Controller (SBEC), depending on the model. If, after diagnosis, the regulator is deemed faulty, the PCM/SBEC must be replaced with a new one.
Hope this helps for now
Posted on Jul 06, 2008
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You can test this by putting a volt meter across the battery posts. A fully charged battery should read 12.6 volts. Then start the engine and the voltage should increase to 13.5 to 15 volts. If you do not get this increase in voltage, then the alternator is not charging, which can be either the wiring to the alternator or the alternator itself being bad. Good luck :O)
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