Question about 1998 Audi A4

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Temperature gauge my temperature gauge (not the oil temp) the gauge that says cold/hot isn't registering anything.... the needle doesn't even go above cold.

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Find the temperture sensor on the engine and see if it is connected, if it is then test to see if its working properly if not then its probably defective and you have to replace it.

Posted on Apr 28, 2010

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Dec 01, 2015 | 2002 Acura RL 3.5

1 Answer

What could cause the temp gauge to not register after replacing decending unit, thermostat, water pump & antifreeze?


Bad ECM, bad wire from the ECM to the instrument panel, and a bad motor for the temp gauge.

Feb 24, 2015 | 1999 Mercury Grand Marquis

1 Answer

The temperature gauge goes up when car starts to HOT like its out of calibration. the engine is not overheating


check that the wire to the temp sender unit has not fallen off and is shorting out on the head/block. The power comes from the ignition switch through the gauge down to the sender unit and because the sender is a temperature controlled resistance unit the voltage is very low and so the gauge reads cold . as the temperature heats up , the resistance is decreased and so the voltage is increased though the gauge and the needle reads higher.. Hench if the gauge goes directly to hot on start up the wire is shorting out or the sender unit is faulty.

Mar 09, 2014 | Acura CL Cars & Trucks

1 Answer

When jackaroo 1988 is motoring where does the needle in the temperature gauge normally be


If your temp gauge has only the cold (C) or hot (H) letters then the operating range would be the width of the needle under 1/2 way between c and h. If it remains steady at slightly over 1/2 way that would be just the setting of the gauge. How to get to know where the needle would sit at a specific position in relation to water temp. Do the following
Remove the temp sender unit and attach an earth wire to the body of the unit to earth. Place the sender unit in a container of water up to the threads .Put a mercury thermometer in the container beside the sender unit Apply heat to the container and watch the gauge needle move in relation to the thermometer reading. Operating temp will be about 80 degrees C on the thermometer and that would be about 1/2 way on the gauge.

Apr 20, 2013 | Cars & Trucks

2 Answers

Heat gauge goes way up,then by reeving motor it will go down.blows cold air


Check out related help links with solutions to troubleshoot the problem:---
Click the link below:---
2004 Toyota Tundra: Oil Gauge and Temp Gauge Not Working?


http://howtobyme.blogspot.in/2012/05/2004-toyota-tundra-oil-gauge-and-temp.html

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http://technoanswers.blogspot.com/2012/01/heater-blows-intermittently-and-temp.html
------------- No heat on Oldsmobile Silhouette? http://technoanswers.blogspot.in/2012/02/no-heat-on-oldsmobile-silhouette.html
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Temperature gauge does not move and no heat when heater is ON? http://technoanswers.blogspot.com/2012/01/temperature-gauge-does-not-move-and-no.html
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----------- Temperature gauge on the dash quit working on Pontiac Grand Prix? http://technoanswers.blogspot.com/2012/01/temperature-gauge-on-dash-quit-working.html
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Heat blows cold on drivers side and hot on passenger side? http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html

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These details will help.
Thanks.

Nov 22, 2012 | 1997 Ford Taurus

2 Answers

Temperature needle stays on the hot and doesnt move even when the car is cold?


YOur guage is faulty. Your will need to replace your guage if it stays in the hot position even when your car is off and your key is out of the ignition. If it only rises to hot when you turn the key to the run position, you have a wire between your guage and your temp sending unit that has been gounded out. Usually this happens when a person opens their hood to add oil or perform some minor maintenance on the engine and inadvertantly bumps the sensor or switch or wiring. This causes about 65% of these minor issues people incur, but if it does stay all the way up with your key out of the ignition switch, then you will need to replace your temp guage.

Oct 18, 2012 | Ford Escort Cars & Trucks

1 Answer

Heater is not getting hot and the temperature needle isn't working


First I would have said your thermostat is stuck open. But if the engine is overheating and the gauge reads cold the cooling system is probably empty. Or there may be alot of air pockets in the cooling system instead of all liquid coolant.
If the system was full and the water pump failed the heater might not work but the gauge would read hot.

Jun 25, 2012 | 2004 Chevrolet Impala

1 Answer

Temperature needle stays on the hot , have changed temperature sensor but it still stays on the hot and the engine is not overheating or leaking anything..what is making it stay on the hot


replace the thermostat,, and make sure that the fan engages , just because the fluids don't boil over doesn't mean the temp isn't to high, if your saying that the temp gauge is stuck on the hot setting, and doesn't move even when the car is cold,, thats a different problem,, if thats the case whats the make , model , and year

Sep 11, 2011 | Ford Thunderbird Cars & Trucks

4 Answers

My temp gauge is going to the red , I turn my heater on and it does go down somewhat . Motor doesn't really seam that hot but might be . Thanks


It sounds like the cooling fan is not working, with the motor off look in front of the motor and there is a fan or 2, check the wiring and plugs, some times they corrode and can be cleaned with alloy wheel cleaner then water then spray oil in them otherwise the fuses and the thermo switch need checking.

Oct 28, 2009 | Ford Focus Cars & Trucks

2 Answers

Temperature gauge fluctuates and the heater blows cold air


Definitely check your fluid level in your radiator. Top it off all the way. I've seen that happen multiple times on cars that were low on anti-freeze. If that doesn't work try replacing your thermostat. It's cheap and the easiest place to start if topping off the fluid doesn't get you fixed up.

Oct 16, 2009 | 1997 Chevrolet Camaro

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