1986 1.6TD JX Coolant Senders
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1986 1.6TD JX Coolant Senders
Evening!
As far as I know there are 3 coolant senders in the cooling system on these engines.
(1) is located in the hose housing on the top/side of the cylinder head [pipe goes to radiator at front].
(2) is on the top side of the coolant hose coming out of the back of the cylinder head [pipe goes to heater].
(3) is on the bottom side of the coolant hose coming out of the back of the cylinder head [pipe goes to heater].
Can anyone tell me exactly what each of these senders control?
I'm guessing sender (2) VW Part: 049 919 501 is for the glow-plug light - e.g. it tell the glow-plug relay how long to heat the plugs for ... but it may serve others purposes - temp gauge?
Had a good search on the forum and in the wiki but can't find anything which helps.
Thanks.
As far as I know there are 3 coolant senders in the cooling system on these engines.
(1) is located in the hose housing on the top/side of the cylinder head [pipe goes to radiator at front].
(2) is on the top side of the coolant hose coming out of the back of the cylinder head [pipe goes to heater].
(3) is on the bottom side of the coolant hose coming out of the back of the cylinder head [pipe goes to heater].
Can anyone tell me exactly what each of these senders control?
I'm guessing sender (2) VW Part: 049 919 501 is for the glow-plug light - e.g. it tell the glow-plug relay how long to heat the plugs for ... but it may serve others purposes - temp gauge?
Had a good search on the forum and in the wiki but can't find anything which helps.
Thanks.
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Re: 1986 1.6TD JX Coolant Senders
Found in the "Wiki"..2 and 3 are for temperature gauge and glow plug.so the last one is for the auxiliary water pump.
I dont think, so I'm not[do I exist?]
1992 1600td [ jx ] syncro panel van[leisuredrive camper ]
1992 1600td [ jx ] syncro panel van[leisuredrive camper ]
Re: 1986 1.6TD JX Coolant Senders
dave friday wrote:Found in the "Wiki"..2 and 3 are for temperature gauge and glow plug.so the last one is for the auxiliary water pump.
Great find. Thanks! I looked and couldn't find it. Can you post me a link to the wiki entry?
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Re: 1986 1.6TD JX Coolant Senders
5.4
then a little way down;Diesel cylinder inst senders [including a picture]
Are you having a problem,if so what is it?
then a little way down;Diesel cylinder inst senders [including a picture]
Are you having a problem,if so what is it?
I dont think, so I'm not[do I exist?]
1992 1600td [ jx ] syncro panel van[leisuredrive camper ]
1992 1600td [ jx ] syncro panel van[leisuredrive camper ]
Re: 1986 1.6TD JX Coolant Senders
Cheers. It's running a little hot, so want to change out the 3 senders, but I am interested to know what each of them do.dave friday wrote:5.4
then a little way down;Diesel cylinder inst senders [including a picture]
Are you having a problem,if so what is it?
Re: 1986 1.6TD JX Coolant Senders
Guessed right for sender 2, but no mention of sender No.1.
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Re: 1986 1.6TD JX Coolant Senders
The senders on the heater flange are both the same part and vary from 1200ohms [cold] to 25/50ohms [hot]
The one on the flange on the side of the head is a switch that switches on when/if the water gets to 104deg c !!
Does the rad fan come on?
The one on the flange on the side of the head is a switch that switches on when/if the water gets to 104deg c !!
Does the rad fan come on?
I dont think, so I'm not[do I exist?]
1992 1600td [ jx ] syncro panel van[leisuredrive camper ]
1992 1600td [ jx ] syncro panel van[leisuredrive camper ]
Re: 1986 1.6TD JX Coolant Senders
But what does that sender switch on/off?dave friday wrote:The senders on the heater flange are both the same part and vary from 1200ohms [cold] to 25/50ohms [hot]
The one on the flange on the side of the head is a switch that switches on when/if the water gets to 104deg c !!
Does the rad fan come on?
Re Rad fan - that's my next port of call. The previous owner disconnected the rad fan from the relay (has no relay at present!) and has it wired to an on/off switch on the dash. Probably because the Thermo-switch on the rad failed or it burnt out the relay. So tomorrow it'll be re-wired back to normal.
However, the temp creeps up to quickly for my liking, so starting with the basics by replacing the senders.
Have read about other possibilities such as the voltage regulator on the rear of the temp gauge, but don't want to get too far ahead of myself. Need to understand what the sensors do, re-wire then fan with new switch and take it from there. Wood for the tree approach.
Thanks for pointing me to that picture.
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Re: 1986 1.6TD JX Coolant Senders
The switch turns on the auxiliary water pump[should be on the fire wall on the front of the engine compartment]
I dont think, so I'm not[do I exist?]
1992 1600td [ jx ] syncro panel van[leisuredrive camper ]
1992 1600td [ jx ] syncro panel van[leisuredrive camper ]
Re: 1986 1.6TD JX Coolant Senders
Great - thanks. Will be checking that one out too to make sure it's working.dave friday wrote:The switch turns on the auxiliary water pump[should be on the fire wall on the front of the engine compartment]
Cheers for the very helpful replies. Think everything is in hand - for the time being!
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Re: 1986 1.6TD JX Coolant Senders
Looks like you're sorted but in case its useful see below copied/pasted from my notes:
VW Transporter 80-92
JX engine temperature sender data
From chassis ref. 24-K-064851
Ref Description Wire colour Sender part number Colour
F95 Thermoswitch for coolant circulation run-on Brown/Red & Brown 251 919 369 F Brown
G27 Sensor for engine temperature (glow plugs) Blue/White & Brown 251 919 501 A, 251 919 501 D Black
G2 Coolant temperature gauge sender Yellow/Red & Brown 251 919 501 A, 251 919 501 D Black
VW Transporter 80-92
JX engine temperature sender data
From chassis ref. 24-K-064851
Ref Description Wire colour Sender part number Colour
F95 Thermoswitch for coolant circulation run-on Brown/Red & Brown 251 919 369 F Brown
G27 Sensor for engine temperature (glow plugs) Blue/White & Brown 251 919 501 A, 251 919 501 D Black
G2 Coolant temperature gauge sender Yellow/Red & Brown 251 919 501 A, 251 919 501 D Black
Syncrosport
Volkswagen Transporter, reloaded.
252 GC5 EJ25 AAN L90D
246 097 AFN AVL+ L90D
Syncronaut #004
Volkswagen Transporter, reloaded.
252 GC5 EJ25 AAN L90D
246 097 AFN AVL+ L90D
Syncronaut #004
Re: 1986 1.6TD JX Coolant Senders
Thanks for that. Very useful info.syncroandy wrote:Looks like you're sorted but in case its useful see below copied/pasted from my notes:
VW Transporter 80-92
JX engine temperature sender data
From chassis ref. 24-K-064851
Ref Description Wire colour Sender part number Colour
F95 Thermoswitch for coolant circulation run-on Brown/Red & Brown 251 919 369 F Brown
G27 Sensor for engine temperature (glow plugs) Blue/White & Brown 251 919 501 A, 251 919 501 D Black
G2 Coolant temperature gauge sender Yellow/Red & Brown 251 919 501 A, 251 919 501 D Black