Wile driving the coach today, I was noticing that both air pressure needles on the dash air pressure gauge would vacillate between 95psi and 120psi. This while cruising. No brakes being used or any other air device. As soon as it would get to 120psi it would bleed down to 95psi then climb back up in about a 90 second cycle. I've never noticed this before but that doesn't mean it hasn't been happening all along. Do I have a problem?
On another note, does anyone me of a place that can service the Meritor Air Brakes in the Los Angeles area!
Thanks in advance.