Originally Posted by Jarvis
I have a 1998 Gulfstream Sunvoyager on a Spartan Chassis. It has the 8.3, 12 valve Cummins engine and 6 spd allison trans.
My problem is when the ABS light comes on the voltmeter jumps to 16 volts. The original owner stated the he was told by either spartan, cummins, or the mfg of the alt (I can't remember which) to run a seperate wire from the alt to the battery and that should "fix" the problem.
Any suggestions and or help would be appreciated.
I cleaned the front sensors, but I'll be darned if I can find any on the rear. Have not driven the RV since cleaning, but still have this voltage spike when ABS light comes on after engine if running.
I have read about all I can find of the subject. Is there a way to disable the system to see if I still get these spikes?
Any suggestions/theories/help would be appreciated.