Re: major problems....help!!1
Voltage dropping and rising with load changes sounds to me like a bad battery.
That's why new vehicles have warranties.
If you have battery issues it can, and will, manifest itself through any number of random trouble codes since all sensors and computers run on...wait for it...that battery that's having problems. If the system voltage drops, sensors and computers get confused.
Keep us posted on what the problem is, as well as the fix.
'14 WK2 Summit EcoDiesel
'01 Ram 2500 QCLB Cummins 6spd 4x4, '92 XJ 4.0/auto, '92 YJ 4.0/stick, 91 Daytona CS/AGS, original owner, 89 Shelby CSX-VNT #135, 87 Shelby CSX #133, 86 Shelby GLHS #499...and 7 Buell motorcycles from 1995-2009