Changing sensor G62 on Golf MKIII GT
Aug0
I have a Golf 3 GT from 1995 and this car has already an OBD connection to plug into the onboard computer an retrieve error and other kind of informations. I bought a very cheap cable OBD cable from ebay to do this kind of debugging.
There was one error that was making me think from a long time ago. The error was something like “Sensor G62 Open or Short to ground on B+” so I decided to use the multimeter to check if the sensor was really messed up. Conclusion, it was!
In the next day I went to a VAG parts shop and bought a new G62 sensor and put hands at work to make the change.
Be very carefull if you decided to do the following steps!
DO THIS ONLY AFTER COLD OR VERY LITTLE USAGE OF THE CAR FROM COLD!! You can get seriously burned!
First step was to take out the engine cooling liquid deposit in order to reduce the pression of the liquid. Because when you take out the sensor, the liquid will come out. After taking out the deposit is time to take out the sensor from its place and switch it with the new one.
Next, you need to put everything back in place again. You also need to set the cooling liquid level to its place again as some liquid will always be losted.
And voila! There are no errors on the onboard computer. I realized that this sensor was being missed a lot. Since I bought the car that I had problems with cranking after running the car and this becomes warm. The sensor provides runtime information of the engine actual temperature and that information is used to control intake air amount and other sort of stuff very usefull for optimum combustion of the fuel.
Results? Perfect crank and running in all conditions (so far)!!