We put a ODB code reader on my 95 jeep grand cherokee. The computer would not read out anything. When the doors open the radio goes off. When we r driving down the hwy the RPM go up from 1500 to 2500.

I suggest re-check to read and note your fault codes acdording with this read codes procedure, with out starting the engine: turn the ignition key ON, OFF, ON, OFF, and finally ON.

The check engine light on the dash will begin to flash. The light will flash the first number of the first digit pause and flash the number of the second digit. Example: five flashes, pause, three flashes = Code 53 PCM failure or Code 54 no cam shaft position sensor signal from distributor etc, etc.

Try this and send us this fault code to send you additional detaild.

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