landbdevelopers

Where can i find a break down for the code if it displays one?

How do i pull the codes . Would i do it while the light is on and truck running?

I have 1996 mack ch600 all mack drive train that builds preasure in the coolant system. When running truck under a load it begins to push coolant out the over flow tank. Once it pushes out a gallon or so it seems to stop coming out but you can look in the cap of the over flow tank and see small air bubbles coming out the hose running into the bottem off the over flow tank and out of the top tank by the fill cap. Also a electronic malfunction light comes on and off time to time. When the light is on the tac begins to jump around . When the light goes out the tac goes back to normal. Do not know if the light has anything to do with the coolant problem.

I have a mack ch600 1996 model . I have a light that comes on listing a electronic malfunction also a shut down light appears. They come on a while then go out may stay on all day or just a few seconds. I have noticed that the tac begins to jump and not hold steady at the rpm the engine is running. Soon as the lights go out the tac starts working like it should. This truck is a all mack running gear. I had it at mack but they have not been any help. They could not get the lights on while it was there. I do not know how to pull up a code myself. Can anyone help me track down my problem.