Various Engine Sensor Woes
Posted: 31 Jul 2017, 17:26
Background Info
My van was originally a DG but in the early 90's a previous owner was on of the first people to put a GTI in a T25. As such I have a 1.8 Golf Mk1 DX Kjet GTI engine.
At present the dash red light flashes continuously, oddly unless I turn on the headlights then it stops!?!
Anyway I wanted to check I have the correct senders to work with my instrument panel, which I assume is the original DG wiring.
I have 6 sensors
Number 1: On the rear of the ending head
I have no idea what this one does but I assume its the oil pressure switch. I am not sure how to test if this is what is giving me the red flashing light issue?
No 2: On water flange on rear of head
Another unconnected one which I assume is water temp of returning radiator hose?
No 3: On a hose junction on the front of the head
This one seems to work. My temperature does sit about 3/4 of the way up however so wanted to check its the correct sensor. All it seems to say on it is 'B310'
No 4: On the top of my oil filter housing
This is not in use and seems the top is broken. I am hoping to replace and use with some Audi VDO gauges I sources a while back
No 5: on the side of my oil filter housing
This one is unconnected and seems to be leaking a little. I assume this is another oil pressure switch from the Golf. I hope to replace this with an oil pressure drum in future for use with VDO gauges.
No 6: Under coolant tank
Unconnected / no wires to connect to it ? Wouldn't the DG originally have had this wiring?
Random
I traced the wiring from No 3 Sensor to a junction box and it connects here:
The other wire next to this just connects to an earth! Is this right?
Summarise
So basically what sensors should I be using?
What should I do about the coolant presence sensor?
Any ideas why using the headlights will make the red light stop flashing.
How can I expect the red light to act when not using a coolant presence sensor?
Sorry for the long post but I like to be thorough
My van was originally a DG but in the early 90's a previous owner was on of the first people to put a GTI in a T25. As such I have a 1.8 Golf Mk1 DX Kjet GTI engine.
At present the dash red light flashes continuously, oddly unless I turn on the headlights then it stops!?!
Anyway I wanted to check I have the correct senders to work with my instrument panel, which I assume is the original DG wiring.
I have 6 sensors
Number 1: On the rear of the ending head
I have no idea what this one does but I assume its the oil pressure switch. I am not sure how to test if this is what is giving me the red flashing light issue?
No 2: On water flange on rear of head
Another unconnected one which I assume is water temp of returning radiator hose?
No 3: On a hose junction on the front of the head
This one seems to work. My temperature does sit about 3/4 of the way up however so wanted to check its the correct sensor. All it seems to say on it is 'B310'
No 4: On the top of my oil filter housing
This is not in use and seems the top is broken. I am hoping to replace and use with some Audi VDO gauges I sources a while back
No 5: on the side of my oil filter housing
This one is unconnected and seems to be leaking a little. I assume this is another oil pressure switch from the Golf. I hope to replace this with an oil pressure drum in future for use with VDO gauges.
No 6: Under coolant tank
Unconnected / no wires to connect to it ? Wouldn't the DG originally have had this wiring?
Random
I traced the wiring from No 3 Sensor to a junction box and it connects here:
The other wire next to this just connects to an earth! Is this right?
Summarise
So basically what sensors should I be using?
What should I do about the coolant presence sensor?
Any ideas why using the headlights will make the red light stop flashing.
How can I expect the red light to act when not using a coolant presence sensor?
Sorry for the long post but I like to be thorough