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Which regulator and what year? You have a window regulator, voltage regulator, fuel pressure regulator to name a few.
Voltage regulator? Inside the alternator. Fuel pressure regulator? Inside the throttle body.
If it is a newer fuel injected Chrysler, the engine computer is the voltage regulator. If it is an older carbureted Chrysler, there will be a regulator mounted on the firewall.
What make? What year? If it's a carbureted engine, the voltage regulator is likely integrated into the alternator (some are serviceable, some are not). If the engine is fuel injected, the engine's computer usually serves as the voltage regulator.
burning to "rich", too much fuel. This is a result of an incorrect air/fuel mix. check fuel pressure regulator, Oxygen sensor (s), and maybe PCM.
Most are located inside the rear section of the alternator Dodge usually mounted the regulator in the center of the firewall, until the trucks were fuel injected then the computer took over the job of voltage regulator.
There is a plate behind the battery and before the fuel tank, where the voltage regulator should be bolted. It is a small, metal rectangular box, with four wires coming from it.
If it's a window regulator the window will not move. If it's a fuel pressure regulator the engine will run badly or not at all. If it's a voltage regulator the battery will be under or overcharged.
Restricted fuel return line or a faulty fuel pressure regulator.
Not enough fuel to them. Most l;likely a fuel pressure regulator problem
to much fuel. check the fuel pressure regulator,crank sensor,
Remove the fuel regulator retaining screws. Remove the fuel regulator wiring harness. Reverse the process to install the new fuel regulator.