Grumpy
Full Access Member
- Joined
- Jul 22, 2021
- Posts
- 348
- Reaction score
- 940
- Location
- Saskatchewan
- First Name
- Daryl
- Truck Year
- 1985
- Truck Model
- C10
- Engine Size
- 350
Regarding all electrical issues, including ALL trouble codes!
After 35 years, I still find it unbelievable the sheer volume of techs/mechanics who refuse to perform the basics when diagnosing any problems regardless of whether they are starting issues, lamps or most common today: engine codes and drivability problems.
When we look in any service manual, service bulletin or review OEM instructions online, the very first verification is proper battery supply and GROUND. With the advent of A/D Convertors (analog to digital signal) the processes may not function at peak efficiency, though they may still work (sort of,) not all data is processed correctly.
Since we first started producing vehicles, everyone's focus has always been on the battery positive feed and the condition of the ground cables is normally overlooked. In short, you can never have enough ground cables on a vehicle. And they have to be in good condition.
I have seen people insist the starter, battery, alternator have all been faulty.... even to the point where they claim "it just goes through starters every ten months" (!!!!!) when the actual problem is CABLES.
Modern vehicles will generate all manner of drivability issues if ground wires are damaged or wiring is rubbing - signals will begin to become intermittent or low, causing the ECM to generate a code which may make a poor choice to replace expensive, and non-returnable sensors. The laptop DOES NOT tell you everything, it just spews whatever information it receives.
Basics first. They are always the less expensive, quicker and easier route.
After 35 years, I still find it unbelievable the sheer volume of techs/mechanics who refuse to perform the basics when diagnosing any problems regardless of whether they are starting issues, lamps or most common today: engine codes and drivability problems.
When we look in any service manual, service bulletin or review OEM instructions online, the very first verification is proper battery supply and GROUND. With the advent of A/D Convertors (analog to digital signal) the processes may not function at peak efficiency, though they may still work (sort of,) not all data is processed correctly.
Since we first started producing vehicles, everyone's focus has always been on the battery positive feed and the condition of the ground cables is normally overlooked. In short, you can never have enough ground cables on a vehicle. And they have to be in good condition.
I have seen people insist the starter, battery, alternator have all been faulty.... even to the point where they claim "it just goes through starters every ten months" (!!!!!) when the actual problem is CABLES.
Modern vehicles will generate all manner of drivability issues if ground wires are damaged or wiring is rubbing - signals will begin to become intermittent or low, causing the ECM to generate a code which may make a poor choice to replace expensive, and non-returnable sensors. The laptop DOES NOT tell you everything, it just spews whatever information it receives.
Basics first. They are always the less expensive, quicker and easier route.