If its not built into the alternator look for a shiny chrome box about the size of a deck of cards on the firewall near the center in the engine compartment
i have a 91 dodge ram 250 van and the voltage regulator went out on it. My Va was located in the computer. a new computer will run about $230. i got mine from a junk yard for 30 bucks and it works fine. the computer is on the fire wall in a black box. i have a 91 dodge ram 250 van and the voltage regulator went out on it. My Va was located in the computer. a new computer will run about $230. i got mine from a junk yard for 30 bucks and it works fine. the computer is on the fire wall in a black box.
Borrow, rent or buy a volt meter and test the battery voltage with the engine running. Have someone take the rpms up to about 1500 and test the battery voltage. If it's very much above 14 VDC, you have a faulty regulator. Ideal voltage is 13.5 but if it's anywhere near 17 or more it will destroy the battery. On the other hand, if one or more of the cells are shorted out, normal voltage will cause the remaining battery cells to boil.
Sorry to tell you but if someone said to adjust it....that means go buy a new alt. because nowdays there are manufactured with the voltage regulators in the alternators. **The voltage regulator is built-in to the ECM...about a $275 part! However, before you jump to conclusions about the voltage regulator being defective, I'd highly recommend that you go visit the autozone website and follow the "Check charging system" word for word. I discovered that the alternator in my 1990 Dodge van wasn't grounding? How could that be? It's bolted to a metal bracket, right? Could be corrosion, could be rust? I even installed a second ground strap from engine to body. Nothing worked until I ran a ground wire from the battery to the alternator case. Charged just great then! Of course I discovered this after first replacing the alternator and the ECM! Don't you make the same (expensive) mistake.
The VAR seance the EXCITER volts and them send a rated voltage that wright down on your alternator like as EXT V. 38 To Field coil to cut the field magnets. This Voltage are 180 to 250 or above V. AC. , The exciter V. are 09 to 24 V. DC.AnswerThe AVR is responsible for keeping the terminal voltage of the generator approximately constant for variations in load.