• Electrical

  TACH AND SPEEDOMETER QUIT WORKING AT SAME TIME!!

  Posted by Lisa on October 20, 2020 at 2:40 pm

  Tach and Speedometer quit working at same time. Not getting any codes for this. They’ve just stopped working. Any ideas on a fix? I’ve checked CB39 not thrown and reset it.

  1997 Prevost XL LeMirage

  Thanks in advance,

  Lisa

  Jimmy replied 6 years ago 3 Members · 2 Replies
• 2 Replies

• 

  Jimmy

  Member

  October 20, 2020 at 3:25 pm

  Just guessing to help you out. Ground under the dash panel? If both units share a common ground, that might be in.

  Another guess is there might be common wire/cable to the chassis computer that could have come unplugged.

  Call Prevost PASS: PASS offers 24/7 availability 365 days a year—just call 1-800-463-7738.

  They are standing by, ready to take your call.

• 

  Mike

  Member

  October 20, 2020 at 8:23 pm

  Like Dick said, maybe a loose ground. I can’t remember exactly, but we had one, or the other, or both act up on our bus many years ago. Removed the screws that hold that section of the dash on, tilted it back and tightened any and all grounds I could find. We haven’t had a problem since. Good luck.

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