coolant sensor

andy01taxi · 11-12-2007, 17:48

hi
anyone help whith the location of the engine coolant temperatur sensor on an octavia
1.9 tdi. is it on the radiator

Gizmo68 · 11-12-2007, 17:52

The one for the temp gauge is at the back of the engine towards the gearbox. They are a common fault if the temp gauge is jumping up and down. Not easy to see, but dead easy to change - 30 second job

andy01taxi · 11-12-2007, 18:03

i have a fault code 17664 whitch says engine coolant sensor would this be the one

Gizmo68 · 11-12-2007, 19:21

Pretty sure yes, its the only one in the engine to my knowledge, when mine went i just changed it without a diagnostic check.
Simply unplug the sensor, pull the clip off, then with a stone cold engine pull the old one out (make sure the seal comes out with it) and pop the new one back in, you will loose about a cupful of coolant - a little more if the seal isn't on the old sensor.

sam95 · 11-12-2007, 20:41

On my 110 tdi the temp sensor is on the right of the block ( looking from the front ). Disconnecting the sensor connecter will cause the dashboard gauge to read 0 and the glow plug light (and plugs) to remain on. havn't had to change it yet.

andy01taxi · 12-12-2007, 09:18

got it sorted lads thanks for the help

11-12-2007, 17:48	#1
andy01taxi Briskodian Join Date: Nov 2007 Posts: 9 Thanks: 4 Thanked 0 Times in 0 Posts	coolant sensor hi anyone help whith the location of the engine coolant temperatur sensor on an octavia 1.9 tdi. is it on the radiator

11-12-2007, 17:52	#2
Gizmo68 Briskodian Join Date: Dec 2004 Location: Hawkinge Kent Posts: 1,124 Thanks: 12 Thanked 57 Times in 56 Posts	Re: coolant sensor The one for the temp gauge is at the back of the engine towards the gearbox. They are a common fault if the temp gauge is jumping up and down. Not easy to see, but dead easy to change - 30 second job

11-12-2007, 18:03	#3
andy01taxi Briskodian Join Date: Nov 2007 Posts: 9 Thanks: 4 Thanked 0 Times in 0 Posts	Re: coolant sensor i have a fault code 17664 whitch says engine coolant sensor would this be the one

11-12-2007, 19:21	#4
Gizmo68 Briskodian Join Date: Dec 2004 Location: Hawkinge Kent Posts: 1,124 Thanks: 12 Thanked 57 Times in 56 Posts	Re: coolant sensor Pretty sure yes, its the only one in the engine to my knowledge, when mine went i just changed it without a diagnostic check. Simply unplug the sensor, pull the clip off, then with a stone cold engine pull the old one out (make sure the seal comes out with it) and pop the new one back in, you will loose about a cupful of coolant - a little more if the seal isn't on the old sensor.

11-12-2007, 20:41	#5
sam95 Briskodian Join Date: Feb 2007 Location: southampton Posts: 21 Thanks: 2 Thanked 2 Times in 2 Posts	Re: coolant sensor On my 110 tdi the temp sensor is on the right of the block ( looking from the front ). Disconnecting the sensor connecter will cause the dashboard gauge to read 0 and the glow plug light (and plugs) to remain on. havn't had to change it yet.

12-12-2007, 09:18	#6
andy01taxi Briskodian Join Date: Nov 2007 Posts: 9 Thanks: 4 Thanked 0 Times in 0 Posts	Re: coolant sensor got it sorted lads thanks for the help

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