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Where is the voltage regulator on a 1991 Jeep Cherokee Laredo with the 4.0 HO?
Wiki User
∙ 11y ago
The 1991 Jeep Cherokee voltage regulation is done by the PCM ( Power Train Control Module) located on the drivers side inner fender behind the air cleaner box. if the voltage seems to be low when the lights and A/C are on and normal when everything is off, you might have a bad PCM OR the grounds on the Jeep need to be cleaned. the grounds are VERY important to the charging system in this year cherokee. clean them up, one is located on the - terminal on the battery to the body, the other is a large bolt on the motor by the dip stick with a bunch of ground wires on it, and the other is between the motor and the firewall on the drivers side firewall...clean them and see if it helps.
Wiki User
∙ 11y ago
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