Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
Grand Cherokee 4.0, watching inputs on scan tool live and each sensor will drop out for a split second but never at the same time. What would make them do that? I've checked the voltages at the dlc connector today but that's about it. Anybody have any suggestions?
Andy.MacFadyen wrote: It is likely to be a scantool to pcm coms issue --- the ECU wil be reading the sensors just fine
Agreed
If you really believe that they are dropping out, throw a meter on one & see what it does when the scan tool shows the drop out. Most likely the scan tool isn't updating fast enough.
