Today I hooked my computer up to my truck and when I viewed the live data values (RPM, VSS, ECT, IAT, etc) with my truck idleing the numbers were jumping all over the place, for example the VSS would read 0 then 68 then 136 and all over the place with my truck just sitting there idling. So something is wrong somewhere in the truck because I tried connecting to other vehicles we have and everything works like it should with the OBD II cable and software. I'm not even sure where to start in trying to find the problem but right now I'm kind of thinking it may be a ground wire somewhere but I have no clue what wires to start checking
Today I hooked my computer up to my truck and when I viewed the live data values (RPM, VSS, ECT, IAT, etc) with my truck idleing the numbers were jumping all over the place, for example the VSS would read 0 then 68 then 136 and all over the place with my truck just sitting there idling. So something is wrong somewhere in the truck because I tried connecting to other vehicles we have and everything works like it should with the OBD II cable and software. I'm not even sure where to start in trying to find the problem but right now I'm kind of thinking it may be a ground wire somewhere
but I have no clue what wires to start checking