Winning
Well-known member
Vheicle 2005 vw jetta wagon 1.9 tdi pd BEW.
So i noticed my coolant temps are climbing higher than they should using vcds. They climb as high as 99c on a long steep grade.
I went to test my radiator fans and the fan relay box.
First test ignition on engine not running ac button on and interrior fan on. Radiator fans turn on.
The next test i ran was jumping at the Radiator fan speed switch on radiator.
One of them runs the radiator fans and they will run untill i disconect the jumper. This one will run with the ignition off, with the ignition on but engine not running and with the ignition on and engine running.
The other wire when jumped with the engine off and the key off will do nothing. But with the ignition on and the engine running or the ignition on and the engine off it will start the fans for a few seconds then the fans will stop running and when the jumper is remove the fans will start again and then turn off again after a few seconds. So the other wire only temporarilay kicks on the radiator fan only if the ignition is on. I can hear the fan relay kick on and off temporarily running the fan on contact and when the wire is disconnected. Is this normal? Or should one be a high fan speed continuous when jumped and the other be a low speed continuous when jumped regardless of ignition position?
So i noticed my coolant temps are climbing higher than they should using vcds. They climb as high as 99c on a long steep grade.
I went to test my radiator fans and the fan relay box.
First test ignition on engine not running ac button on and interrior fan on. Radiator fans turn on.
The next test i ran was jumping at the Radiator fan speed switch on radiator.
One of them runs the radiator fans and they will run untill i disconect the jumper. This one will run with the ignition off, with the ignition on but engine not running and with the ignition on and engine running.
The other wire when jumped with the engine off and the key off will do nothing. But with the ignition on and the engine running or the ignition on and the engine off it will start the fans for a few seconds then the fans will stop running and when the jumper is remove the fans will start again and then turn off again after a few seconds. So the other wire only temporarilay kicks on the radiator fan only if the ignition is on. I can hear the fan relay kick on and off temporarily running the fan on contact and when the wire is disconnected. Is this normal? Or should one be a high fan speed continuous when jumped and the other be a low speed continuous when jumped regardless of ignition position?