Re: 1998 Grand Cherokee Laredo 4.0
Since its shifts ok, it seems that the pressure regulating solenoid works fine. There could be a wire problem on the pressure sensor or a bad connection somewhere. Check the connectors on the PCM for moisture and/or corrosion first. If ok, it probably be time to do a continuity check of the wires from the PCM to the transmission and check if the resistance of each wire is ok.