× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
2006 Jeep Wrangler Sport, BATT/Charging/Starting Waveform
Posted to the Waveform Library on 2/2/2017

Looking for an opinion on these alternator waveforms. I am getting voltage spikes on the PCM 5V rail causing some bucking, jerking, flickering MIL, and PCM resets. The spikes can be seen on the 5V waveform and cranks position sensor waveform

 

car Vehicle Data

2006 Jeep Wrangler Sport 4.0L

Engine4.0 L / 6 cyl / GAS
Trans4-speed AutomaticTransmission (Electronic)
DeliveryFuel Injection
SubsystemBATT/Charging/Starting
Component
ConditionUnknown

car Vehicle Data

2006 Jeep Wrangler Sport 4.0L

Engine4.0 L / 6 cyl / GAS
Trans4-speed AutomaticTransmission (Electronic)
DeliveryFuel Injection
SubsystemBATT/Charging/Starting
Component
ConditionUnknown