Question about Audi A4

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Hello. I have a 1999 Audi A4 and the temp gauge just stopped working today. Its stays at cold and I know the car is warmed up. Was and has been at 1/2 point for the last 65K miles. What do ya think ?

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  • brnanml Jan 21, 2009

    hello,, thank you. is this item expensive ?

    Steven

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  • 1,118 Answers

Chk. temp. sending unit.

Posted on Jan 21, 2009

  • ccn7 Jan 21, 2009

    i really can't tell you how much, but i don't believe its more than 10.00 bucks. call napa or autozone and they will tell you how much.

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Hello, i just realised my car is overheating. The temp gauge reaches around 110-115 degress while driving even when stationary. Theres plenty of coolant and i have had a new timing belt and water pump for...


Check the radiator and the cooling fan. open the hood as the engine temperature rises does the fan come on. if not that the problem, Also do this As the car is warming up(from a cold start) near operating temperature, turn off the car, watch out for the fan, engine of key in your pocket fell the radiator is there any hot or cold spot? if there is the radiator is plugged. Also if the radiator isnt plugged new doesnt mean it works, the water pump itself can be faulty. and dont forget the most important device the Thermostat you did timing belt waterpump they should of done thermostat.

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Om my 2001 Audi A4 Avant T1.8, I have minimal heat and no indication on my temp gauge. I have changed the thermostat and it made no difference. Does anyone have any other suggestions?


hey mate
going through similar problem myself right now. 1997 A4 1.8 (same vintage as yours I think)

No heat from vents (luke warm at best) - temp gauge never moves.
I've also been getting really poor fuel economy - I think it is linked to this, as the EMU thinks the engine is constantly cold and changes the air/fuel ratio (like having the choke out when driving).

Q: Does your radiator fan come on when you start your engine from cold? It shouldn't come on until the engine is warmed up. If so your problem could be to do with the fan control unit, or the viscous assembly of the rotor itself. Both can be replaced as one modular unit.

I would be curious to hear what solution you came to as I am troubleshooting this myself at the moment.

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Disfunctional heater on 1997 audi a4 2.8l . no hot air!


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1 Answer

Audi a4 2000 cold temp


your thermostat is stuck open not letting the engine get up to operating temp. You probably are not getting very good heat out of the vents either. the oil light is a serious concern though even if you oil level is good there is a good chance you have oil sludge build up clogging you oil pick up tube. this happens on older 1.8t i am assuming that is what you have. That is a job for a shop they will need to replace oil pick up tube quite a few breather hoses and seals this is not a cheap fix. and it is also very labor intensive. You might also want to do water pump and timing belt as well when they are in there it will be about 2000 or so this would not be a job i would take to an outside shop. audi knows what they are doing would be a good idea to go there.

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1 Answer

Please can you help why only after about a mile the engine is red hot but temp gauge is only showing middle. is this normal. YEAR 2001 WITH SERVICE HISTORY ONLY HAD SIX MONTH.


When you say "red hot" do you mean actually glowing? If so, you'd have serious trouble. If you mean only hot to the touch, that's normal - these engines run pretty warm. And yes, the gauge in the center is normal - the OEM temp gauge is a dummy gauge, only meant to show you that it's either cold, overheated, or mainly OK. Use your oil temp gauge as your main indicator - at least it's graded numerically and you can actually see the oil temp.

Jul 16, 2008 | 1999 Audi A4

1 Answer

Stolling problems


could be the choke which does not go off after engine temp is reached

Jun 24, 2008 | 2005 Audi A4

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