when the unit is started the park break light will blink and there is a beeping the spedo shows 30 mph then the engine will speed up to 2800 rpm and the spedo will go to 100 mph then the unit will calm down for 20 to 30 sec then it will do it over and over again the parking brake is set and the unit is locked out of drive any help would be great i have not worked on these units yet thanks