temperature guage

john bellamy · May 16th, 2006, 19:55

can anybody help my temperature guage does not work at all where should i start to look or is there something that might want changing by the way hello to you all john

May 16th, 2006, 20:06

Hi John

Is the thermostat opening correctly ? Also there should be a plug linked to the thermostat housing somewhere which sends the signal back to the temp gauge in the car, see if this is dirty. It's very common especially to have oil on it, once that's cleaned see if the gauge then works if not check for breaks in the wires and/or the fuse on the back of the speedo head.

Charlotte

john bellamy · May 17th, 2006, 16:50

thanks for your help will have a look and see how i get on by for now john

dralphs · May 18th, 2006, 06:02

Hi John

In addition to previous post. Beg or borrow a haynes manual or go to local library (or if sneaky have a quick look in the copy in halfords). Find the temp sensor (i think its on or near the thermostat but can't be sure as i have a diesel). Pull off the connector and with ignition on connect the wire to earth (engine block) via a test bulb. If you don't have a test bulb make one up using a 5watt bulb and a couple of lengths of wire.
The only reason for the bulb is to prevent any possible damage should you have the wrong connection and find its live to battery.

With the temp sensor wire connected to earth the guage should go all the way up into the red. If it does the sensor is faulty which is quite common and they are easy to change, just do it with engine cold.
If the guage doesn't move and the fuel guage is OK (they share the same supply) then suspect a broken wire or faulty guage. I would say in this case a manual would be useful to allow you to trace the wire.

If i remember when i get home i'll see if i can attach a section of the wiring diagram.

dave

dralphs · May 21st, 2006, 22:15

John

diagram didn't scan very well

however have attached it

D19 is temp sensor
Br = brown
Bl = blue
Gn = green
SB = black

the sensor position is not shown in the haynes but it should be on or near the thermostat

dave

john bellamy · May 23rd, 2006, 20:17

thanks for your help will try and find sensor would this be the same as a sender john

May 16th, 2006, 19:55	#1
john bellamy New Member Last Online: Aug 7th, 2009 11:10 Join Date: May 2006 Location: Melton Mowbray	temperature guage can anybody help my temperature guage does not work at all where should i start to look or is there something that might want changing by the way hello to you all john

May 16th, 2006, 20:06	#2
charlotte001 Guest Location:	Temp Gauge Hi John Is the thermostat opening correctly ? Also there should be a plug linked to the thermostat housing somewhere which sends the signal back to the temp gauge in the car, see if this is dirty. It's very common especially to have oil on it, once that's cleaned see if the gauge then works if not check for breaks in the wires and/or the fuse on the back of the speedo head. Charlotte

May 23rd, 2006, 20:17	#6
john bellamy New Member Last Online: Aug 7th, 2009 11:10 Join Date: May 2006 Location: Melton Mowbray	thanks thanks for your help will try and find sensor would this be the same as a sender john

May 17th, 2006, 16:50	#3
john bellamy New Member Last Online: Aug 7th, 2009 11:10 Join Date: May 2006 Location: Melton Mowbray	thanks for your help will have a look and see how i get on by for now john

May 18th, 2006, 06:02	#4
dralphs Member Last Online: Mar 7th, 2024 22:11 Join Date: Dec 2002 Location: Oxford View Photos By: dralphs	Hi John In addition to previous post. Beg or borrow a haynes manual or go to local library (or if sneaky have a quick look in the copy in halfords). Find the temp sensor (i think its on or near the thermostat but can't be sure as i have a diesel). Pull off the connector and with ignition on connect the wire to earth (engine block) via a test bulb. If you don't have a test bulb make one up using a 5watt bulb and a couple of lengths of wire. The only reason for the bulb is to prevent any possible damage should you have the wrong connection and find its live to battery. With the temp sensor wire connected to earth the guage should go all the way up into the red. If it does the sensor is faulty which is quite common and they are easy to change, just do it with engine cold. If the guage doesn't move and the fuel guage is OK (they share the same supply) then suspect a broken wire or faulty guage. I would say in this case a manual would be useful to allow you to trace the wire. If i remember when i get home i'll see if i can attach a section of the wiring diagram. dave

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