pomiedore vs
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- vs acclaim series 11 v6
In reply to Aussieforlife11 question, when diagnosing engine management systems, as a rule of thumb, if the problem is intermitent then likely it is a connection or wiring fault.
If the problem is terminal ie, does not go away, then likely it is the sensor. CAS, Coils and DFI modules either work or they don't, there's no in between.
The PCMs use very low voltages so the slightest bit of resistance will cause problems. This is to be expected as cars age and the AC delco wiring looms used on Commodores are particularlly susceptible. The wiper connectors used on the sensor and PCM terminals lose their tension with age. Throw in a bit of corrosion and you can get a dodgey reading.
Before throwing your hard earned money at new sensors, check wiring and connector terminals first. However,the pins on sensor terminals are hard to clean and if they are corroded then replacement is the only option.
If the problem is terminal ie, does not go away, then likely it is the sensor. CAS, Coils and DFI modules either work or they don't, there's no in between.
The PCMs use very low voltages so the slightest bit of resistance will cause problems. This is to be expected as cars age and the AC delco wiring looms used on Commodores are particularlly susceptible. The wiper connectors used on the sensor and PCM terminals lose their tension with age. Throw in a bit of corrosion and you can get a dodgey reading.
Before throwing your hard earned money at new sensors, check wiring and connector terminals first. However,the pins on sensor terminals are hard to clean and if they are corroded then replacement is the only option.